RussianPatents.com
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Device and method for beams shaping in cdma communication system. RU patent 2354050. |
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FIELD: physics. SUBSTANCE: invention is related to device and method for beams shaping in telecommunication system of mobile communication CDMA with application of intellectual antennas technology, using specified device and method, multiple fixed beams are shaped in sector, and multiple fixed beams are used to shape traffic channel with narrow beams and common channel with sector beams in one and the same intellectual antenna system, and problem of phases discrepancy is solved in appropriate channels due to differences in time and temperature oscillations without application of complicated correcting technology. Since fixed beams in some area correlate and interact with each other, or considerably weaken due to correlative summation of space vectors of every fixed beam in process of common channels transfer in CDMA system with multiple antennas, then appropriate ratio is established between power of pilot channel and traffic channel in coverage area, and signal-noise ratio is increased for signals received by mobile communication station. As a result of addition of optical transceivers system between system of the main frequency band and system of radio frequency transceivers (TRX), the main frequency band system services more sectors. Radio frequency unit is located in close proximity to antennas, and consumed power is reduced accordingly. EFFECT: increased throughput capacity and efficiency of CDMA system with multiple antennas. 15 cl, 6 dwg
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Space encoding with spectrum spreading in communication system with multiple antennas / 2331984 Space encoding with spectrum spreading is performed in the system with multiple antennas for randomising the "active" channel traced by the receiving object, for every block sent, data symbols on the transmitting object. The data is processed for obtaining ND blocks of data symbols that must be transmitted in NM intervals of transmission, where ND ≥ 1 and NM> 1; ND amount of blocks is split into NM subblocks of data symbols, one block for each transmission interval. The control matrix is chosen for every subblock, each subblock of data symbols is processed dimensionally using the control matrix chosen for this sub block to obtain transmission symbols that are additionally processed and transmitted via NT amount of transmitting antennas during one transmission interval. Therefore, ND amount of blocks of data symbols are dimensionally processed using NM control matrixes and correspond the channel assembly. |
Device and method for tracking radio frequency and capturing it / 2321955 In the system and method for adjusting contour pass band in the synchronization contour of radio receiver, usage of peak detector (102) (dwg.3) is included to determine maximal amplitude and to clock incoming data at various code phase shifts. Maximal amplitude and clocking are used for following processing, where the value of maximal amplitude is used to determine regulation coefficient. Clocking information, connected to maximal signal value, is used to compress the incoming signal. The compressed incoming signal is later scaled in accordance to certain amplifier regulation coefficient, so that the input signal received at synchronization contour is scaled to produce desired contour pass band. |
High speed transmission in mode of transmission and receipt with diversion / 2316119 In accordance to the invention, transmission code matrix is generated with usage of transformed orthogonal codes in such a way, that the code is resistant to static channel characteristics and operates efficiently both in Rician channels and in (correlated) Rayleigh channels. Also, invention provides for high speed transmission of symbols with usage of several transmitting antennas and one or more receiving antennas. |
Method and device for assigning a walsh space in communication system / 2310281 In base station and mobile stations a list of Walsh functions is contained. Walsh space pointer is transferred to point at which exactly Walsh functions from the list are used for realizing communication. Walsh space pointer is corrected according to available dynamically changing transmission power, or according to usage of Walsh functions in base station. |
Transmitter with code division of channels and efficient usage of allocated frequency spectrum / 2303331 In known transmitter with code division of channels (IS-95 standard), new elements are additionally introduced, namely: transmitter circuit additionally features P orthogonal code generators, (N+K+J+1) signal spectrum generator, P channel signal adders, channel group signal adder, and each information channels features a divider, second encoder, interlacing device and second symbol compressor, each call channel features divider, second coder and interlacing device and appropriate connections between them for creation of new signal code structure and of a form of code compression of channels. |
Spectrally effective code-division transmitter / 2287904 Newly introduced in prior-art code-division transmitter (IS-95 standard) are following components: orthogonal M-code generator, two (n + k) modulators, and n + k + j + 1 signal spectrum shaper in transmitter circuit; divider, second coder, multiplier, and second character compactor in each data channel; divider, second coder, and multiplier in each call channel; relevant interconnections to organize new signal-code structure and channel code multiplexing type which has made it possible to enhance spectral efficiency of communication system by more than three times. |
Method for setting up default channels for operation and servicing on basis of internet-protocol over asynchronous transfer mode / 2285346 For realization of method, base station sends request of booting protocol (BOOTP) to operation and service center, and base station receives IP-address assigned to it from response, dispatched by operation and service center, as a result of which between base station and controller of base stations, operation and service channel is set up. Problem of automatic launch of base station is also solved by this, preventing conflicts of IP-addresses and making it possible to realize parallel launch of base stations. |
Device and method for assigning common packet channel in mobile communications system / 2262202 Base station receives information, pointing out presence on mobile station of information for transfer. Then, base station transmits information about state of use of physical channels and information about maximal allowed possible data transfer speed. Mobile station receives aforementioned data and transmits access header to base station to request given physical channel, determined on basis of aforementioned data. |
Coherent receiver of modulated signals with a shift of multi-channel communication system (oqpsk) with code separation of channels / 2254679 The receiver has two frequency converters, two quadrature correlators, phase error filter, controlled oscillator, two control elements, error delay filter, controlled clock oscillator, reference signal generator, two multipliers, two analog-to-digital converter, delay line, demodulator, decoder, two matched filters, phase shifter. |
Method for receiving multiple-beam signal, method for searching for and method for generating soft decisions in case of receiving multiple-beam signal and devices, containing implementations of said method / 2251802 Implementation of soft decisions generating method in case of receiving multi-beam signal allows substantial decrease of complication level of receiver, because it contains lesser amount of one-beam receivers, than a prototype. |
Spatial processing using control matrices for pseudorandom transmission control in multi-antennae communications system / 2351070 Present invention pertains to communication techniques. The transmitting object carries out spatial processing using control matrices, so that data transmission is held in a set of "effective" channels, formed on the real channel used for transmitting data, and control matrices, used for PRTS. Control matrices can be formed by sampling a base matrix, which can be a Walsh or Fourier matrix. Different combinations of scalars are then chosen, each combination of which consists of at least one scalar, of at least row of the base matrix. Each scalar can be a real or complex value. Different control matrices are formed by multiplying the base matrix by each of the different combinations of scalars. Control matrices are different transpositions of the base matrix. |
Device and method for frequency-time-space block coding for capacity improvement / 2337483 Invention concerns data transfer, particularly frequency-time-space block coding in a transmitter with three transmitting Tx antennae. Input symbol sequence is transferred by three Tx antennae according to permutation method via selected transmission matrix. |
Channel estimation method and radio communication system related to it / 2322759 In accordance to the method, in straight direction, beam is created by a set of antennas, and at least one vector is created for beam generation, subject to application for connection of at least one base station to at least one mobile station, is defined by at least one client station and from at least one client station to at least one base station information is transmitted, which contains information about aforementioned at least one beam generation vector. In accordance to the invention, at least one base station transmits information about beam generation vector used for connection of at least one base station to at least one client station, to at least one client station, on basis of which at least one client station estimates the channel. |
Method for using generation of polar pattern and distribution during transmission in closed contour in multi-beam antenna system / 2321950 When controlling a multi-beam antenna system for a downstream line of wireless communications, generation of polar pattern and signaling of distribution during transmission in closed contour are combined, each beam signal is adjusted at transmitter on basis of check connection from wireless communication mobile station in such a way, that signals received by wireless communication mobile station may be coherently combined. |
Signal transfer method (variants) and device for realization thereof (variants) / 2289203 Technical result is achieved due to correction of spectrum of copies of information signal being transferred, transferring copies of information signal from each adaptive antenna array in each effective transmission direction, estimating transfer functions of direction transmission channels on basis of pilot signals transferred from each antenna element, on basis of pilot signals for distributed transmission, sent from each adaptive antenna array in each one of effective transmission directions, and also combining two given estimates. |
High frequency system and method for exchanging packet data / 2286030 Each high frequency ground station contains at least one additional high frequency receiver for "surface to surface" communication and at least one additional "surface to surface" demodulator of one-tone multi-positional phase-manipulated signal, output of which is connected to additional information input of high frequency controller of ground station, and input is connected to output of additional high frequency "surface to surface" receiver, information input of which is connected to common high frequency receiving antenna, while control input is connected to additional control output of high frequency controller of ground station. |
Spatial-temporal code with non-zero complex weighing for transmission by multiple antennas / 2276463 Method and device provide for expansion of space-time block code N×N' to space-time block code M×M', where M>N, with utilization of leap-like alternation of symbols phase in space-time block code N×N', to make it possible to transfer space-time block code from distributed antennas in amount, exceeding N'. |
Distributed system of intelligent antennas / 2264010 Proposed distributed system of intelligent antennas has N antennas, N radio-frequency transceivers, main frequency band digital signal processor in base station of wireless communication system, feeders, and data bus; N antennas and N radio-frequency transceivers are grouped to obtain a number of radio-frequency transceiver groups disposed at different consistent-reception locations of base station, including different buildings or different floors of one building. |
Method for electronic scanning of phased array beam / 2354017 Electronic scanning of phased array beam is realised by serial displacement of beam between two fixed angular directions in space, by means of variation of signals phase distribution in radiators with the help of phase changers. At that initial phase distribution of beam is calculated, and beam is established into initial angular position. Then phase distribution of final beam position is calculated by means of phase value determination for every radiator, then it is memorised, radiators are distributed into N subarrays, at that N is selected based on condition T is time of single working cycle specified for phased array; τ is time interval of re-phasing of every subarray in radiators. Then radiator subarrays are re-phased in any sequence in compliance with memorised values of phase for every radiator of subarray, and the next subarray re-phasing is started on completion of the previous subarray re-phasing. |
Compensating noise suppression method in multichannel antenna system / 2349996 Incident electromagnetic wave is received by two compensating antennas and N main antenna radiators. Amplitude and phase of received signal of the first compensating antenna are converted so that with non-interference, amplitude and phase of converted signal are equal to that of signal received with the second compensating antenna. The specified signals are subtracted thus forming output compensating signal. Output signals of N main antenna radiators are added to weight factors thus forming converted signal of main antenna. Amplitude and phase of output compensating signal are converted. Then output compensating signal is subtracted from converted signal of main antenna thus output signal of multichannel antenna system. |
Method of generating multilobed beams of antenna arrays / 2341853 Proposed method of generating multilobed beams of antenna arrays is based on weighting signals, received by each emitter, and subsequent addition. The complex weight coefficient in the channel of the n-th element of the array is found, using the partial diagram method, by superposition with certain weight factors Hp of complex currents forming the p-th beam: where N is the number of emitters, using information on the orientation of the main lobes of the directional pattern where d and λ are array spacing and wavelength, and their relative level HP. When determining complex weight coefficients , information on the required values of the phase diagram Ψp in the directions of the formed lobes are used. This is due to that, during superposition of complex currents , complex weight factors are used taking into account the required values of the phase diagram with its signs. |
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