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Method for automatic detection of narrow-band signals (versions) Invention relates to radio engineering and specifically to methods of detecting narrow-band signals on a background of powerful radio-frequency radiations in conditions of a priori uncertainty of parameters thereof, and can be used in radio monitoring systems and on radio links. In the first version, the method comprises: receiving an analogue radio signal, digitising and forming a spectral representation of said signal; calculating the noise threshold level by calculating a limit threshold equal to double the value of the sample average of the modulus of a spectral representation component; forming a new sequence which takes into account the moduli of the spectral representation component which do not exceed the limit threshold, and components exceeding said threshold are assigned the value of said threshold; calculating the noise threshold level similar to the limit threshold from a component of the new sequence; a decision on detection is made based on results of comparing the value of the modulus of the spectral component and the noise threshold level. In the second version, the method is characterised by that when forming a new sequence of the spectral representation component, components whose values exceed the limit threshold value are not included in said sequence. The remaining procedures are performed the same as in the first version. |
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Method of creating electromagnetic compatibility area for ground-based radioelectronic equipment Invention relates to radio communication and is intended to provide electromagnetic compatibility of ground-based radioelectronic equipment operating in matching radio frequency bands and in common territorial areas. Probed dislocation points of a transmitting (receiving) device of new radioelectronic equipment are placed at nodes of an equilateral triangular grid, arranged with uniform spacing on the territorial area under investigation relative to the dislocation point (x0,y0) of the receiving (transmitting) device of the active radioelectronic equipment; while moving in a selected azimuthal direction on the grid from the point (x0,y0) to the dislocation point of the transmitting (receiving) device of the new radioelectronic equipment, the value W=PI-PIall is checked at each point (where PI is the interference power at the input of the receiving device, PIall is the allowable interference power), said value being calculated based on surface topography; movement continues until two neighbouring points (x1,y1) and (x2,y2), where the values of W have different signs, are found, i.e. when points lying on different sides of the contour are found; said points are considered initial points for constructing boundaries of the area; a third point (x3,y3) is then determined, which forms an equilateral triangle with the first two points and lies on the right side of the line formed by points (x1,y1) and (x2,y2); the value of W at said point is then calculated; if after calculation, the obtained point lies outside the boundary of the area, points (x2,y2) and (x3,y3) are selected as initial points for the next iteration, otherwise points (x1,y1) and (x3,y3) are selected; the tracking of the boundary of the area ends when initial points of the next iteration match initial points at the first iteration; wherein at each l-th iteration, a point (xk,yk) lying at the side of the triangle and belonging to the contour of the area is determined based on known points (xl,yl) and (xl+1,yl+1), and the contour of the area is found by interpolating the found points {xk,yk}. |
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Transmitting/receiving apparatus and method in codebook based multiple-antenna system Invention relates to a mobile communication system in which communication is carried out based on a multiple input multiple output (MIMO) codebook. An aspect of the invention is aimed at generating a codebook for open-loop-multiple input multiple output (OL-MIMO) from a codebook for closed-loop-MIMO (CL-MIMO). A transmission/reception apparatus and method in a codebook-based multiple-antenna system is provided. In a transmission method in a codebook-based MIMO system, feedback information is received from a receiver. A downlink OL single user-MIMO (OL SU-MIMO) subset is defined in the main codebook based on feedback information. At least one data stream is transmitted at least through one antenna using the defined downlink OL SU-MIMO subset. |
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Data transmission via downlink Invention relates to wireless communication and can be used for downlink communication in a time slot-based communication system. The method of preserving bandwidth in a communication system includes expanding a data frame using a first pseudonoise (PN) expander. A broadcast frame is expanded using a second PN expander. A stream of complex data is generated, having a first component and a second component. The data frame is assigned to the first component and the broadcast frame is assigned to the second component. The stream of complex data is transmitted to a tag. |
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Outgoing connection power control technology Invention relates to wireless communication engineering and can be used to determine transmission power. The outgoing connection power control method includes receiving, at the a serving base station, interference and noise information (NI) from at least one neighbouring base station, receiving a request from a mobile station to determine a calculation formula for determining the calculated signal-to-interference-plus-noise ratio (SINRTarget), determining and transmitting to a mobile station a control factor, which also includes determining the calculation formula for determining the SINRTarget, receiving a signal from at least one mobile station antenna, signal transmission power of an outgoing connection from at least one antenna, calculated by the mobile station using the control factor. |
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Invention relates to digital broadcasting which provides an audio indicator of link quality. After receiving a digital radio signal using a digital radio receiver, the quality of the received digital radio transmission is determined. Then an audio message from the received digital radio transmission is decoded. Then an audio indicator is superimposed onto the audio message, to form a composite audio signal. Finally, the amplitude of the audio indicator is dynamically adjusted relative to the amplitude of the audio message depending on the quality of the received digital radio transmission. |
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Transmission rate adaptive transmission scheme for multiple input multiple output systems Invention relates to wireless communication using a multiple input multiple output (MIMO) communication system and enables, in a transmission rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, to provide transmission diversity for each data symbol stream and fully utilise overall transmit power of the system and full power of each antenna. According to the invention, at least one data symbol stream is received for transmission from a plurality of antennae. Each data symbol stream is scaled with a respective weight coefficient corresponding to the value of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmitted symbol streams for the plurality of antennae. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennae and each transmitted symbol stream is transmitted at full (or close to full) power for the associated antenna. |
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Invention relates to a wireless control device. The wireless control device, having an antenna and a power collector for generating power for the device from a radio-frequency signal incident on the antenna, wherein the device further includes a power divider for dividing the incident signal and an up-converter stage, wherein the up-converter stage comprises one of a low-noise amplifier and dual-port mixer or a dual-port parametric amplifier, wherein the two ports include a first port for receiving a control signal to undergo up-conversion, and a second port for receiving an incident radio-frequency signal and for outputting an up-converted control signal at upper and lower sideband frequencies, wherein the antenna is connected to the second port. |
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Invention relates to an information system for delivering different types of information to an end device through acoustic waves. A transmitter capable of generating acoustic waves for transmitting information, which are almost inaudible to the human ear, is required in a medium which enables to transmit information through acoustic waves. The transmitter is a device for converting different types of information into an acoustic wave in a sound spectrum, and transmission, having a microphone for receiving ambient sound at the point from where the acoustic wave is emitted, which serves as the input signal of the ambient sound; a peak frequency detector for determining in the ambient sound signal the peak frequency of the main component of ambient sound; a carrier generator for generating carriers, having a plurality of frequencies equal to the product of the peak frequency and a natural number and can be used to mask ambient sound; and a modulator for modulating the plurality of carriers of the baseband. |
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Active interference mitigation in satellite communication system Invention relates to a satellite communication system employing active interference mitigation in order to mitigate co-channel interference between signal users. The communication system includes a receiving or transmitting antenna, having a plurality of antenna elements, each associated with a corresponding antenna element signal. The method includes steps of calculating complex weighting values for one or more of a set of beam signals, adjusting beam signals according to the calculated complex weighting values and mitigating co-channel interference in at least one of the beam signals using one or more adjusted beam signals in order to provide an output signal with mitigated interference. Complex weighting values can be calculated based on a constant modulus algorithm. |
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Method for communication in mimo network Invention relates to wireless communication using a multiple-user multiple input, multiple output (MU-MIMO) system and discloses a method for communication in a network including a primary station and at least a first secondary station, wherein the first secondary station transmits to the primary station an indication of a first set of precoding vectors, and the number of first precoding vectors is greater than a preferred rank of transmission from the primary station to the first secondary station. |
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Efficient group definition and overloading for multiuser mimo transmissions Invention discloses a method comprising indicating to each apparatus of a plurality of apparatus, a position of that apparatus in each group of apparatus from a plurality of groups for allocating one or more spatial streams; generating a preamble comprising a first field of y bits identifying a group in the plurality of up to 2y groups for receiving simultaneous data transmissions; and transmitting, to the apparatus, at least a portion of the preamble with the first field preceding the simultaneous data transmissions destined for a set of apparatus selected from the group, wherein allocation of one or more spatial streams of the simultaneous data transmissions to each apparatus from the set is specified by the portion of preamble and by the indicated position of that apparatus in the group. |
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Electronic device, signal transmission device and signal transmission method Invention relates to communication engineering and can be used in wireless communication systems. Signal distribution, signal switching and signal collection is performed using a simple configuration. The device includes a transmitting unit and a receiving unit. The device includes a plurality of pairs of wireless signal transmission points in the transmitting unit and wireless signal reception points in the receiving unit. Use of pairs of transmission points and reception points enables to perform any signal distribution where the same signal intended for transmission from a transmission point is transmitted to a plurality of reception points, and signal switching where a signal intended for transmission from a transmission point is selectively transmitted to any of the plurality of reception points. The signal intended for transmission is transmitted as a wireless signal. In that case, signal distribution, signal switching and signal collection is performed on a wireless signal transmission area. Since the area where signal transmission is performed using electric conductors does not include an area where signal distribution, signal switching and signal collection is performed, signal distribution, signal switching and signal collection can be performed using a simple configuration. |
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Transmission of telemetry data from offshore well bottom to sea platform Proposed method comprises the steps whereat well data is generated as an electromagnetic signal to ne radiated by radiator to receive telemetry info as the electromagnetic signal. Note here that said telemetry info is received by cable antenna with negative buoyancy. Note also that cable antenna comprises active two-electrode section and symmetric feeder composed by twisted pair of wires. Note that feeder length is selected to be at least sea depth at the point of submersion of cable antenna on shelf. Besides, signal received by antenna can be amplified by amplifier incorporated with said antenna and arranged between active two-electrode section and symmetric feeder. Additionally, received signal is filtered by rejection filter incorporated with cable antenna between two-electrode section and amplifier. |
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Device for receiving binary information via two parallel communication channels Device for receiving binary information via two parallel communication channels includes an input AND 1 element and an input OR 2 element, outputs of which are connected to inputs of the first and second error protection units 3, 4, respectively, wherein data inputs of the input AND 1 and OR 2 elements are connected to the first and second buses of the parallel communication channels 5, 6. The device also includes a third and a fourth error protection unit 7, 8, four digital inverters 9, 10, 11, 12, four AND elements 13, 14, 15, 16, four switches 17, 18, 19, 20 and a second OR 21 element, a data output of the device 22 and a request-repeat signal output 23. |
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Methods, devices and map databases for green routing Invention relates to methods and navigation devices for determining a route for travelling from a first position to a second position at a relatively low cost. A navigation device comprises memory storing a map database including a plurality of road segments and vehicle cost values, which represent the expected power or fuel consumption of the vehicle derived from acceleration data obtained from a plurality of vehicles that have travelled on the road segments; a processor to determine a route of travel for the vehicle from the first position to the second position, the determined route of travel minimising or relatively reducing the overall expected power or fuel consumption of the vehicle travelling between the first position and the second position; and an output device to output the determined route. |
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Radio station for independent operation of 10 telephone and 10 telegraph channels Radio station further includes an antenna switch, a transmission channel converter, a receiving channel converter, an amplifier, a unit of ten analogue-to-digital converters, a unit of ten digital-to-analogue converters, a unit of ten filters, a data transmission channel converter, a switch, a unit of data transmission equipment and ten self-contained radio operator stations. |
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Device for inspecting fibre-optic lines Invention relates to devices for monitoring losses in fibre-optic lines and can be used as a universal tool for protecting confidential information transmitted over an uncontrolled territory. The device includes a transmitting optoelectronic module, the input of which is connected to the output of a digital generator, and series-connected receiving optoelectronic module, automatic gain control amplifier, band-pass filter, level detector, microcontroller and signalling device; the device further includes an optical switch, first and second optical couplers, a matching device, the output of which is connected to the second input of the automatic gain control amplifier and the input is connected to the first output of the microcontroller, the second output of which is connected to the control input of the optical switch, the optical output of which is the output of the device to the fibre-optic line, and the optical input is connected to the output of the first optical coupler, the first input of which is the input of the device, and the second input is connected to the output of the transmitting optoelectronic module. |
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Optoelectronic device for analogue signal transmission Invention relates to instrumentation for transmission of analogue electric signals via light channel. Optoelectronic device comprises laser transmitter optically coupled with optical receiver with its output connected with digital registrator input. Additionally, it comprises laser stabilisation unit and that of taking the logarithm of input signal. Input of the latter doubles as the device input while its output is connected with laser transmitter first input. Laser transmitter second input and output are connected with laser stabilisation unit output and input, respectively. |
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Secure multichannel fibre-optic transmission system Invention relates to secure fibre-optic transmission systems and can be used as a duplex fibre-optic channel for transmitting confidential information over an uncontrolled territory. The transmission system includes a fibre-optic line and two transmitting-receiving devices consisting of an optical transmitter, an optical receiver and a monitoring device. Each transmitting-receiving device further includes an optical multiplexer/demultiplexer, a controller and N groups, wherein inputs of the controller are connected to outputs of the monitoring devices of all groups and the output of the controller is connected to second inputs of optical transmitters of all groups, inputs of the optical multiplexer/demultiplexer are connected to outputs of optical transmitters of all groups and its outputs are connected to inputs of optical receivers of all groups, wherein the linear input/output of the multiplexer/demultiplexer are connected to each other by a fibre-optic line. |
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Invention relates to radio communication using relay satellites on high elliptical orbits. The method includes a relay satellite establishing the angular size of the coverage area of a multibeam antenna which is not smaller than the angular size of the service area in the widest part thereof; maintaining, during movement of the relay satellite, the direction of the axis of the central beam of the multibeam antenna towards the centre of the service area; determining active beams whose areas overlap with the service area, and passive beams whose areas do not overlap with the service area; connecting the active beams to on-board transceiving equipment; periodically checking coincidence of the areas of the beams with the service area; based on the checking results, disconnecting from the on-board equipment those active beams whose areas do not overlap with the service area, and connecting to the on-board transceiving equipment those passive beams whose areas overlap with the service area. |
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Mobile communication terminal and radio communication system Invention relates to radio communication. The mobile communication terminal divides a plurality of multipath signals associated with radio signals transmitted from a plurality of base stations using an S-CCPCH to groups by base stations, i.e., by transmission sources, performs optimum addition of plurality of multipath signals associated with the same base station which is a transmission source into a composite signal, decodes the composite signal and selects a composite signal having a good decoded result from the decoded composite signals. |
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Multiplexing control and data information from user equipment in mimo transmission mode Invention relates to means of multiplexing uplink control information (UCI) with data information in a physical uplink shared channel (PUSCH) transmitted over multiple spatial layers. The method includes determination of the number of coded UCI symbols in each spatial layer when the data information is conveyed using multiple transport blocks, determination of the number of coded UCI symbols in each spatial layer when the PUSCH conveys a single transport block retransmission for a hybrid automatic repeat request (HARQ) process while the initial transport block transmission for the same HARQ process was in a PUSCH conveying multiple transport blocks and determination of the modulation scheme for the coded UCI symbols. |
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Digital demodulator for frequency-modulated signals Digital demodulator for frequency-modulated signals relates to radio engineering and can be used in devices for receiving discrete and analogue information for digital demodulation of frequency-modulated or frequency-shift keyed signals. The digital demodulator for frequency-modulated signals includes two digital narrow-band signal detectors (DNBD), which operate concurrently but with different sampling frequencies fKV1 and fKV2 generated by clock generators thereof. Inputs of DNBD1 and DNBD2 are connected together to form the input of the frequency-modulated signal demodulator. The output of DNBD1 is connected to the non-inverting input of a subtractor, the inverting input of which is connected to the output of DNBD2. The output of the subtractor is the output of the digital demodulator for frequency-modulated signals. |
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Device for facilitating data communication between an automated movement control system and an integrated locomotive safety device includes the following modules, mounted in a housing: central processing unit, wireless modem control, interface conversion and power supply, as well as a motherboard. The central processing unit module includes first and second RS485 interface converters, a memory unit and a processor connected to the interface converters and the memory unit. The interface conversion module includes first and second RS485 interface converters, two CAN interface converters and a control unit. The wireless modem control module includes first and second RS485 interface converters, a galvanically isolated RS232/422 interface converter and a microcontroller. All modules are connected to the motherboard. |
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Invention relates to wireless communication. The method includes steps of: transmitting, to a receiver, a management frame including group information to assign or change a position of a plurality of spatial streams corresponding to each of a plurality of groups, and transmitting, to the receiver, a frame including at least one spatial stream, wherein the group information includes a plurality of group indicators and a plurality of spatial stream (SS) indicators, each of the plurality of group indicators indicating whether or not the receiver is a member of each of the plurality of groups, each of the plurality of SS indicators indicating a position of the plurality of spatial streams corresponding to each of the plurality of groups. |
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Relay node, base station and method of receiving and transmitting broadcast system information Invention relates to radio communication, particularly to a wireless relay system which receives and transmits broadcast system information and is designed to resolve a conflict caused by simultaneous reception by a relay node from a base station of broadcast system information and transmission by said relay node of broadcast system information to user equipment. The method of receiving and transmitting broadcast system information involves a base station or a relay node establishing an offset between boundaries of radio frames of the relay node and the base station such that said boundaries of radio frames lie in a checkered order; the relay node receives and transmits broadcast system information in accordance with the established LTE transmission period. |
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Distribution in control channel in wireless communication network Invention relates to communication engineering. Disclosed are versions of methods and a system for distributing multiple users on a control channel of a wireless communication network. In one aspect, the method of distributing multiple users on a control channel includes selecting a first number of modulation symbols of a transition region in a control channel and allocating the first number of modulation symbols to a second number of users. |
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Apparatus and method for performing functional check of communication system Invention relates to communication engineering and can be used to perform functional check of a communication system in an aircraft cabin. The apparatus for functional check of a communication system comprises a control device which includes a broadband noise signal generator and a transmitter for transmitting a high-frequency signal to a radiating linear antenna, wherein functional check is performed at a power level so low that signal emission at the radiating linear antenna is lower than a given limiting value outside the cabin. |
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Transmission of sounding reference signals in tdd communication systems Invention relates to a single-carrier frequency division multiple access communication system using time division duplexing (TDD). A sounding reference signal (SRS) bandwidth configuration is changed by setting a maximum bandwidth value of the SRS bandwidth configuration to a value that avoids overlapping the bandwidth allocated for transmission of one or more random access channels. The SRS is transmitted in accordance with bandwidth from the changed SRS bandwidth configuration. Information regarding the SRS bandwidth configuration is provided to user equipment (UE) by the network. |
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Method includes using an optical link which ends with bidirectional signal splitters designed to input/output information signals into the optical link; determining overall power of the reflected signal arriving at the input of an optical receiver; comparing said value with the maximum allowable noise power to select the information signal. By eliminating and/or redistributing, on the propagation path of the optical signal between the transmitter and the receiver, elements with a higher level of reflection or replacement thereof with elements with a lower level of reflection, overall power of the reflected signal arriving at the input of the optical receiver is obtained, which is sufficiently low for separating the information signal from the optical signal arriving at the input of the receiver, and the information signal is transmitted in opposite directions using one carrier wavelength for a specific optical link. |
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Invention relates to communication engineering and can be used in communication devices situated in different media. The invention discloses a method and an apparatus for relaying a beacon signal or a traffic signal of radio-frequency communication established between communication devices situated in media which require use of relaying. An antenna is situated in each medium. The method includes a step of receiving a beacon signal or a traffic signal using at least one antenna, a step of generating a relay signal based on the received signal and a step of simultaneously transmitting a relay signal from each antenna, wherein the power level of the relay signal transmitted by each antenna is a fraction of the full power level of the relay signal. |
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System of devices employing data transmission through human body Invention relates to electronics and information technology, and is intended for transmitting data between two electronic devices. The invention relates to a system of a first device (3) and a second device (4), immovably connected to clothes (1) and each having an electrical signal processing unit connected to a first contact and a second contact, wherein the second contact enters the inner surface (8) of the clothes, wherein the processing units and contacts are configured to transmit data between two devices by establishing at least one wireless link between first contacts of said two devices. |
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Method of filtering and detecting pulsed signals with robust system of partial channels Method of filtering and detecting pulsed signals with a robust system of partial channels includes observing an additive mixture of pulsed video- or radio signals on a noise background, channel robust and resultant in-phase filtering of pulses, wherein after preliminary one-dimensional functional conversion with corresponding standardisation of the observed additive mixture for the pulsed signal, partial estimates are generated via robust nonlinear filtering in each channel in the robust system of partial channels, then based on said estimates, multidimensional robust processing of output signals of the partial channels is performed using cognitive methods or image identification methods for both video signals and radio signals, while realising coherent and in-phase summation, which is in-phase for signals and not in-phase for noise; detection and estimation of signal parameters is then performed. |
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Invention relates to radio communication and particularly to methods of increasing stealthiness of radio-frequency radiating means operating with a pseudorandom operational frequency readjustment signal. The transmitting end divides an input signal into information units presented in binary form; a reflected signal arises when a signal is emitted into space at the frequency position fj of the pseudorandom operational frequency readjustment cycle when an airborne radio reconnaissance means enters the lobe of the beam pattern of the antenna of the radio-frequency radiating means, said signal also propagating towards the antenna of the radio-frequency radiating means. After the radio-frequency radiating means emits the radio signal on said pseudorandom operational frequency readjustment cycle, the frequency of the emitted radio signal fj changes to fk. The frequency of the previous pseudorandom operational frequency readjustment cycle fj for transmission is freed, while simultaneously turning on a receiver tuned to fj, and analysing presence of a reflected signal. If a reflected signal is present, the radio-frequency radiating means turns off its transmitter for the time during which the airborne radio reconnaissance means flies through lobe of the beam pattern of the antenna. |
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Shipborne unified communication system Invention relates to radio communication and particularly to equipment for controlling a shipborne radio system, and can be used to facilitate external and internal communication on ships, submarine ships and other mobile objects. The system consists of five modules connected to each other by a transport network in form of four subnetworks; in the second module of the system, radio transmitters are broadband, wherein amplifiers of the transmitters operate on a "power bank" scheme, wherein a "power bank" enables concurrent operation with a maximum number of channels, the number and power of which is defined by the number and power of unified broadband power amplifiers, or operation with fewer channels with high power or operation in any standard mode which employs a pseudorandom frequency readjustment method, wherein the "power bank" employs broadband power summation bridges with cross connections, which may connect any groups of amplifiers to a group of antennae by controlling the phase of output high-frequency signals. |
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Invention relates to a wireless mobile communication system and is intended to improve system performance by reducing signalling overhead. The method comprises steps of: setting a rank of uplink control information to a rank of uplink data; multiplexing a first control information item output from the control information with the data; channel interleaving the multiplexed output with control information other than the first control information item from said control information; and transmitting the interleaved signal. |
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Method of transmitting and receiving radio signals Invention relates to communication engineering and can be used to determine spatial coordinates of a fixed or mobile radio facility (RO) receiving radio signals. The technical result is high efficiency and simplification of corresponding radio systems. A driving RO transmits radio signals with given individual characteristics. The radio signals are received by serially numbered driven RO. The time of reception is recorded and radio signals with individual features given for each driven RO are emitted after a delay time given individually for each driven RO. A receiving RO receives radio signals of the driving and driven RO, generates a series from the plurality thereof and, based on the given coordinates of phase centres of antennae thereof and time of reception of radio signals taking into account overall delay time, coordinates of the phase centre of the antenna of the receiving RO are determined. |
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Method of transmitting and receiving radio signals Invention relates to communication engineering and can be used to determine spatial coordinates of a fixed or mobile radio facility (RO) receiving radio signals. The technical result is high efficiency and simplification of corresponding radio systems. A driving RO transmits radio signals with given individual characteristics. The radio signals are received by serially numbered driven RO. The time of reception is recorded and radio signals identical to radio signals of the driving RO are emitted after a delay time given individually for each driven RO. A receiving RO receives radio signals of the driving and driven RO, generates a series from the plurality thereof and, based on the given coordinates of phase centres of antennae thereof and time of reception of radio signals taking into account overall delay time, coordinates of the phase centre of the antenna of the receiving RO are determined. |
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Method and apparatus for configuration of transmission power of demodulation reference signal Invention relates to communication. Present invention discloses a method of configuring transmission power of a demodulation reference signal (DMRS) which comprises a step of configuring the ratio between transmission power of a DMRS at each layer in a resource element (RE) and transmission power of data at a corresponding layer in a RE to be a constant value. Furthermore, the present invention discloses an apparatus for configuring transmission power for the DMRS. The present invention greatly improves the rate of correct data frame decoding, and improves decoding performance. The present invention enables the network side to avoid the need to notify user equipment (UE) on the corresponding relationship between transmission power of DMRS at each layer and transmission power of data at the corresponding layer, which reduces the overhead of the control signalling at the network side. Since the corresponding relationship between transmission power of DMRS at each layer and transmission power of data at the corresponding layer is configured in the UE, the UE can implement channel estimation without waiting for the notification from the network side, which improves the channel estimation efficiency. |
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Voltage supply device for bus in bus network Application in the field of electrical engineering. Voltage supply device for a bus in the bus network, first in a bus of EIB-network, with source current (M1) which is coupled in parallel with a capacitor (C3) from which supply voltage (U) is tapped off, at that in-series connection (M1, C3) is connected directly or indirectly to the bus with bus lines (Bus+, Bus-) under different potentials and is differentiated by the first regulating module (A), which stabilises the operating point of the current source (M1) notwithstanding signals at the bus lines (Bus+, Bus-) and loads or load changes in supply voltage (U), and by the second regulating module (B),which adapts the operating point of the current source (M1) by means of actuation at the signal from the bus lines (Bus+, Bus-). |
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Method of creating radio channel through artificial ionospheric transponder Invention relates to radio engineering. The method is based on that, along with probing the ionosphere with an inclined wideband linear frequency modulation probing signal, it includes irradiating the ionosphere with powerful radio radiation of a heating stand to generate scattering artificial small-scale magnetically oriented inhomogeneities in the ionosphere, which operate as an ionospheric transponder through which an additional radio channel is created. The pumping wave frequency of the heating stand is calculated based on conditions for aspect scattering of radio waves on the artificial small-scale magnetically oriented inhomogeneities taking into account coordinates of the location of a transmitter, a receiver of the wideband linear frequency modulation probing signal and the heating stand, using altitude-frequency characteristic data of the ionosphere, measured by a vertical probing station situated at the location of the heating stand. |
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When enabled with common reference signal interference cancellation, user equipment (UE) may compute a channel state feedback value taking into account any cancelled interfering neighbouring signals. When neighbouring cells are determined to be transmitting data during the time for which the channel state feedback value is being computed, the UE is able to derive the channel state feedback value taking into account those cancelled interfering signals. The UE determines whether each neighbouring cell is transmitting during the designated time either by obtaining signals that indicate the transmission schedule of the neighbouring cells or by detecting the transmission schedule, for example based on the power class of the neighbouring cells. If the UE determines that the neighbouring cells are transmitting data during this time period, the UE will compute the channel state feedback value including consideration of the cancelled interfering signals. |
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Method and apparatus for multibeam search Invention relates to communication engineering and can be used in wireless communication systems. The method for multibeam search involves performing interpolation with zero values for multiple discretised peak ADP profiles and filtration for multiple interpolated peak ADP profiles; determining if there is an intense beam in the multiple interpolated and filtered peak ADP profiles; if so, selecting an interpolated point from each of the early, intermediate and late beams of each peak ADP profile from the multiple interpolated and filtered peak ADP profiles and carrying out a process of eliminating interference of the intense neighbouring beam for three selected interpolated points; based on the principle of the early, timely and late beam, performing interpolation of the peak position for the three interpolated points to correct the peak position of each peak ADP profile and storing the corrected peak position. An apparatus for multibeam search is also disclosed. |
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Method and system for sending channel measurement reference signal Invention relates to a wireless communication system. The invention discloses a method of sending a channel measurement reference signal, which comprises steps of: sending each channel measurement reference signal port in one subframe or two adjacent subframes during one sending period, and resending each channel measurement reference signal port on the full bandwidth with an equal interval in a unit of the given composite unit. |
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Wireless access method and mobile station and base station used therein Invention relates to communication systems. A mobile station connected to an access network receives a control message which identifies neighbouring cells with a different wireless technology from the access network technology. The mobile station searches for signals from neighbouring cells with a different wireless technology, and in case of detection failure, the mobile station increases the time interval between successive signal searches. |
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Method and apparatus for transmitting a downlink reference signal in a wireless communication system supporting multiple antennae are disclosed. The method of transmitting Channel State Information-Reference Signals (CSI-RSs) for eight or less antenna ports includes steps of selecting one of a plurality of CSI-RS Resource Element (RE) groups defined in a data region of a downlink subframe and mapping CSI-RS for the eight or less antenna ports to the selected CSI-RS RE group, and transmitting the downlink subframe in which the CSI-RS for the eight or less antenna ports are mapped. The plurality of CSI-RS RE groups are defined such that a transmission diversity RE pair for data transmitted in the downlink subframe is not broken. |
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Vehicle control device contains steering wheel, optical emitter and optically linked with it radiation receivers connected to dedicated computer. Optical receivers represent digital television cameras the field of view of which is optical emitter surface. In the first version, optical emitter is made as strip attached to inner surface of steering wheel. In the second version, the device contains the second optical receiver, herewith the receivers represent light emitting diodes and provide illumination of objects falling into field of view of the first and the second optical receiver. The zone where vehicle operator gestures can be recognised is intersection of fields of view the first and the second television cameras on the surface of optical emitter. Appearance of operator's finger in this zone causes emitted light flux intersection and consequently appearance of shaded segments on images generated by the first and the second television cameras, and according to coordinates of these segments the dedicated computer calculates a number of spatial positions of operator's finger at successive time points and determines motion trajectory from them. |
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Apparatus and method of adjusting dispersion compensator wave range Invention relates to communication engineering and can be used in optical communication systems. The apparatus includes a central control module, a temperature control module for wavelength adjustment and a feedback voltage detection module. The method includes determining values of temperature corresponding to the given target wavelength, corresponding values of the given wavelength adjustment voltage according to the temperature value and performing digital-to-analogue conversion on the voltage value; determining the current wavelength adjustment feedback voltage according to the current RTD resistance value in the dispersion compensator; adjusting the potential ratio between wavelength adjustment temperature control terminals of the dispersion compensator according to the value of the given wavelength adjustment voltage, obtained after digital-to-analogue conversion, and the current wavelength adjustment feedback voltage value. |
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Method and apparatus for transmitting multiple frames for supporting mu-mimo Invention relates to a communication system. A method of transmitting multiple frames in a wireless local area network (WLAN) system supporting multiple user-multiple input multiple output (MU-MIMO) is provided. The method comprises transmitting a first frame and a second frame consecutively to a first station (STA) and transmitting a third frame and a fourth frame consecutively to a second STA, wherein the transmission start time of the first frame and the transmission start time of the third frame are aligned to each other, and wherein the transmission start time of the second frame and the transmission start time of the fourth frame are aligned to each other. |
Another patent 2513594.