Broadband receiving device

FIELD: radio engineering, communication.

SUBSTANCE: device comprises a coder, first and second phase shifters, a first and a second high-frequency switches, a HE element, an adder, a mixer, a synthesizer, a controlled key, a pseudo-random sequence generator, a key generator, a receiving part of a mixer, Demodulator, first and second phase detectors, first and second keys, NOT element, OR element, decoder, speed change command decoder, channel quality analyzer, receipt decoder, formation unit Messages, a memory unit, a delay line, a synchronization unit, a pseudorandom sequence generator, a key generator, a controlled key, a frequency synthesizer, a power control unit comprising a counter, a decoder, an attenuator, a power amplifier. Due to the power control unit, the power parameters of the generated signal change when the program adjustment speed changes.

EFFECT: increasing the noise immunity of radio communication to deliberate response interference by changing the frequency tuning rate and controlling the radio transmitter power depending on the interference situation.

2 dwg

 



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to means of detecting illegal use of a processing device of a security system, used to descramble various media data distributed over multiple corresponding channels. The method includes counting new messages ECMj,c, received by the processing device of the security systems for channels, other than channel i, after the last received message ECMi,p; verifying that the message ECMi,c was received during said time interval by verifying that the number of new messages ECMj,c, received for channels other than i, reaches or exceeds a given threshold greater than two; increasing the counter Kchi by the given value each time when after verification a message ECMi,c is received during a given time interval, immediately after a message ECMi,p, otherwise the counter Kchi is reset to the initial value; detecting illegal use once the counter Kchi reaches said threshold.

EFFECT: reducing the probability of illegal use of a processing device.

10 cl, 3 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering. A method of searching for an object belonging to a set of objects using a verification device, wherein the verification device and objects from the set of objects are configured to exchange information elements through at least one communication channel, wherein each object from the set of objects has a first corresponding identifier from which a plurality of representatives is obtained, wherein the method includes obtaining, in the verification device, a first identification word (mi;p(xi)) relating to the object being searched for, wherein the first identification word is formed by applying a first encoding function to a first object identifier, the search of which is performed such that the first identification word depends on a sub-part of the plurality of representatives obtained from the first identifier, wherein the sub-part is defined by at least one variable parameter (i), wherein the value of the variable parameter is selected randomly using the verification device, said value defining the sub-part of the plurality of representatives obtained from the first identifier; and the first identification word received over the communication channel is transmitted from the verification device.

EFFECT: protecting the identity of objects to prevent third-party monitoring of the objects.

14 cl, 4 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to communication security methods. The method comprises steps of: storing, in a first part of non-volatile memory of the resource-restricted device, at least one encrypted payload, storing, in a second part of the non-volatile memory of the resource-restricted device, a pointer pointing towards an encrypted payload stored in the memory, when a transmission is to be made by the resource-restricted device, sending the encrypted payload indicated by the pointer, and storing, in the second part of the non-volatile memory an updated pointer indicating a next-to-be-used encrypted payload stored in the memory.

EFFECT: more secure data transmission.

15 cl, 1 dwg

FIELD: physics.

SUBSTANCE: invention relates to semiconductor microelectronic devices and specifically to devices for protection from piracy and falsification of integrated circuits (IC), which are embedded in an IC chip. The device for protection from piracy and falsification of integrated circuits comprises, embedded in the chip of an authentic integrated circuit, a first logic register with elements for inputting an identification number (label) by a trusted integrated circuit manufacturer through working or auxiliary leads of the integrated circuit and which block subsequent input of another identification number. The device further includes a second logic register with elements for inputting, by the user of the integrated circuit, an identification number known to said user and a logic coincidence circuit with elements for outputting information on authenticity and permission for normal operation, in which the identification number stored in the first logic register of the integrated circuit is compared with the identification number in the second logic register, and if the identification numbers match, normal operation of the integrated circuit is allowed.

EFFECT: authentication of an integrated circuit, preventing reading of the identification number (label) from the integrated circuit by intruders and checking working capacity of the device for protecting integrated circuits from piracy and falsification.

1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: if the bits of a digital image signal byte and message signal byte coincide, then the logical "1" value is assigned. Otherwise, the logical "0" is assigned. Then, a {F} array is formed to record the logical values. The latter are stored in the {F} array after comparison of the digital image signal and message signal bytes. Afterwards, the logical values are read from the {F} array. Then, a message marker packet is formed with recording the logical values from the {F} array to the information field of the packet. The marker packet and digital image packet are transmitted using different communication channels.

EFFECT: higher security of confidential information transmission.

3 dwg

FIELD: physics, optics.

SUBSTANCE: protection device is designed to prevent unauthorised probing of protected segments of optical cable systems and networks for various purposes. Controlled neutralisation of probing radiation in an optical cable is carried out by raising the noise level to the information-bearing signal power level or higher using a fibre-optic noise generator. The fibre-optic noise generator is connected in the optical network (1) on a Mach-Zehnder interferometer scheme (1), which is formed by asymmetrically connected two coupling devices (5, 6). One arm of the interferometer includes the fibre-optic noise generator, formed by a fire-optic modulator (7) and a noise generator (8). Power supply (9) and control of the device is carried out on the protected optical network via a channel (10). The protection device (2) is connected to the optical network (1) by detachable or permanent connections (3, 4). The device does not affect light flux in a switched off state and, when turned on, has optical nonreciprocity on noise induced in transmitted signals.

EFFECT: high efficiency of protecting information using optical channel noise masking methods.

13 cl, 7 dwg

FIELD: radio-engineering, communication.

SUBSTANCE: method of secret information transmission by the object means emission of the electromagnetic energy, where object is exposed by receiving-transmitting antennal (RTA1) of radar station (RS1)by continuous signal with frequency modulation under one-side saw-toothed linear law (NLFM signal) that is received by RTA2 of RS2 of the object, directed via two channels, and in one channel NLFM signal is delayed for time tz, and in another channel it passes through the coder generating different NLFM radio pulses with different width corresponding, for example, to dot, hyphen and pause from Morse alphabet, then NLFM signals are summed, reinforced as per power. And via RTA2 are re-transmitted towards RS1, where they are multiplied with the emitted LNLFM signal for further separation at RS1 of two signals with frequencies: Fpi=2DiFmdfm/C±2Vif/C and Fpj=2DiFmdfm/C±2Vif/C+B, where C and Vi are light velocity and speed of approach or divergence of RS1 and RS2; f, Fm and dfm are frequency, modulation frequency and frequency deviation of NLFM signal; B is part of frequency of difference signal due to delay of NLFM signal; Di is distance between radar , and separation of definite difference Δ=Fpi-Fpj=B upon which identification it is assumed that the object transmits the secret information.

EFFECT: expansion of assortment of devices used for information transmission.

2 cl

FIELD: electricity.

SUBSTANCE: information hiding device comprises: a signal attenuation unit, two key memory units, a masking signal shaping unit, a subtracting unit, six adder units, four multiplier units, an information transfer device unit, a factor shaping unit, a divider unit.

EFFECT: improvement of security and accuracy of recovery of the secured signal.

8 dwg

FIELD: information technologies.

SUBSTANCE: method of secure information transmission based on addition of the secured signal and the signal being a function of the secured signal and the masking signal, differing by that, for the purpose of increase of hiding and accuracy of recovery of the secured signal, the stego-container containing two components is formed, for this purpose the first signal is allocated which is equal to a half of the secured signal, and the second signal equal to a difference of the value of the first key and the first signal, the first component of the container is defined by the first signal, to which the product of masking signal and the sum of value of the second key and the first signal is added, the second component of the container is defined by the second signal, to which the product of masking signal and the sum of value of the third key and the second signal is added, to recover the secured signal four coefficients are determined, the first coefficient is equal to the doubled sum of values of the first and third keys, the second coefficient is equal to the doubled value of the second key, the third coefficient is equal to the doubled product of values of the first and second keys, the fourth coefficient is equal to the sum of values of the second and third keys, the readings of the secured signal are found by adding of the third coefficient to the product of the first container components and the first coefficient, and subtracting the product of the second container components and the second coefficient, the obtained result is divided by the sum of the first and second components of the container and the fourth coefficient.

EFFECT: improvement of security and accuracy of recovery of the secured signal.

11 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method for transliteration conversion of information and transmission thereof over communication channels includes receiving a structured message and breaking down said method into parts. A first part is broken down into two different data units, to which control information is added to obtain transliteration matrix row and column coordinates, from which a matrix cell corresponding to the first part of the message is selected. A semantic expression is extracted and transmitted, from the selected cell, to a communication channel, the semantic expression being used to determine cells available for converting the second part of the message. The second part is broken down into two different data units with addition of control information to obtain row and column coordinates for selecting a matrix cell from which a semantic expression is extracted, which corresponds to the second part of the message, and said expression is transmitted to a communication channel. The selected semantic expression is used to determine cells which are available for converting the third part of the message, wherein the third and subsequent parts are converted in the same manner as the second part.

EFFECT: high reliability of transmitting structured messages, achieved by validation of transmission of structured units.

1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: communication system with high rate of information transfer with ultrabandwidth signals includes a reception/transmission switch, a band-pass filter, an antenna, a processing and control unit, buffer devices, an ultrabandwidth pulse generator, a low-noise amplifier, an attenuator, a power divider, two time window devices, two threshold voltage shapers, two inverters with discharge, two comparison circuits and a synchronisation unit.

EFFECT: increasing interference immunity of information transfer under high-intensity noise conditions.

1 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to radio communication and can be used in constructing high-speed two-way radio links operating at one frequency when transmitting discrete or analogue signals. A system for two-way high-speed short-wave radio communication consists of two transceiving sets, each comprising an analogue signal source, an analogue signal receiver, a signal compressor, a signal expander, a control unit, a modulator, a transmitter, a transceiving antenna, a first input signal switch, a demodulator, a clock signal demodulator, a receiver, wherein each transceiving set further includes an encoder, a decoder, a discrete signal source, a discrete signal receiver, a first radio signal switch, an output signal switch, a digital selective call (DSC) signal generator and a second input signal switch.

EFFECT: high link throughput and more radio subscribers that can operate at the same operating frequency.

8 cl, 2 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to communication. In the method, when performing transmission power planning for a broadcast control channel (BCCH) carrier, it is determined whether a traffic channel is in an idle state, it is determined whether the traffic channel is in a discontinuous transmission DTX silent period, when the traffic channel is in a non-idle state; and transmission power of channels configured on the BCCH carrier in some of time slots is reduced when the traffic channel is in the idle state or when the traffic channel is in the non-idle state and is in the DTX silent period. With the present invention, since the transmission power can be reduced according to demand of the planned part of time slots, the power consumption on the BCCH carrier can be optimised or its influence on the power consumption of the base station can be minimised while maintaining operating performance of the whole network.

EFFECT: base station power saving method and system are disclosed.

6 cl, 1 tbl, 6 dwg

FIELD: radio engineering, communication.

SUBSTANCE: in the cross-repeater the interaction of radio networks of a single-frequency and two-frequency simplex operating in two different frequency ranges, and a conference communication radio network is implemented. The cross-repeater contains two pairs of simplex radio stations connected to the power unit and to each other through an interface which in each pair through the duplex filter are connected to common antenna and operated at unmatched frequencies of conditional range. Interface has multiport adders - two per radio station, the low-frequency output of the receiver of each of which is connected to the noise suppressor and through the respective adders with the input of submodulator of transmitter of the radio stations operating in one of frequency ranges, and the output of the noise suppressor of each of radio stations through the respective adders is connected to the control transmitter of radio stations operating in another frequency range. Pairs of simplex radio stations can operate in the ranges respectively 160 MHz and 460 MHz.

EFFECT: expansion of scope of application of repeaters for organising of interaction of several radio networks operating in different frequency ranges.

2 cl, 3 dwg

FIELD: physics.

SUBSTANCE: instead of the prototype-valid estimation an information-bearing cyclic time shift of an m-sequence in each beam separately and averaging of results of said estimation across all beams, the present invention includes coherent accumulation (each separately) of an information pulse arriving on all beams, and generating the desired estimate of the time shift of the m-sequence based on the single-beam information pulse generated as a result of said coherent accumulation.

EFFECT: low decoding error probability.

3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to reception of broadband signals under the action of concentrated interference in a reception band. The device includes n band-pass filters of a first group (11-1n), a unit for calculating weight coefficients (2), n multipliers of a first group (31-3n), two adders (4, 14), a matched broadband signal filter (5), a rank vector computer (6), two spectral rearrangement units of a first type (7, 12), n reference voltage sources (81-8n), n multipliers of a second group (91-9n), two spectral rearrangement units of a second type (10, 13), n band-pass filters of a second group (111-11n).

EFFECT: minimising distortion of the correlation function of a received signal after the signal passes through an adaptive filter while maintaining the matched filtering principle.

9 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to receiving-transmitting devices and can be used in command radio links to transmit command information from a base station to on-board (and in the reverse direction). In a command radio link digital modem during transmission, a signal from the output of a modulator is subjected to spectrum spreading with multiplication using a first multiplier of a low-speed information signal coming from the output of the modulator, with a pseudo-random sequence of bipolar pulses, which is transmitted from a pseudo-random sequence generator. During reception, samples of the complex envelope of the received signal from ADC modules with frequency arrive at a digital down-converter (DDC), which provides filtration in the working frequency band and multiplies the signal with reference oscillation from a digital synthesizer (DDS) in order to compensate for Doppler shift. Further, the signal arrives at a device for searching for a noise-type signal based on delay and frequency, which enables detection of a noise-type signal. Once a noise-type signal is detected, the device for searching for a noise-type signal based on delay and frequency re-launches the means of tracking delay of the noise-type signal to provide initial synchronisation of the reference pseudo-random sequence with the pseudo-random sequence of the received noise-type signal. The system for tracking delay clocks the pseudo-random sequence generator to maintain clock synchronisation of the reference pseudo-random sequence and the pseudo-random sequence of the received noise-type signal (tracking the noise-type signal on delay). The reference pseudo-random sequence is multiplied by the multiplier with the complex envelope of the received noise-type signal and transmitted to a coherent demodulator. The coherent demodulator provides elimination of residual offset on frequency and phase of the received signal and the local reference oscillation generator, signal accumulation over the duration of the noise-type signal and a relaxed solution on the transmitted bit. The relaxed solutions are further transmitted to a noise-immune code decoder. The decoded data are transmitted through a switch to the output of the digital modem. If the encoding mode is turned off, the data from the output of the modulator are immediately transmitted to the output of the digital modem.

EFFECT: maintaining working capacity and main characteristics in the presence of Doppler frequency shift of a signal in channels and frequency instability of reference generators.

7 dwg, 2 tbl

FIELD: radio engineering, communication.

SUBSTANCE: proposed procedure consists in execution of terminal assigned programme at the server data processing module, compression and encoding of said data to be output to terminal appropriate device. Server transceiver module sends said data to said terminal. Said terminal receives said data, decompress it, decodes and displays at terminal output device. Extra data, if any, received from terminal input device, said terminal compresses it, encodes and forwards to said server by terminal transceiver module. Note here that said server uses its transceiver module to receive, decompress and decode said data and loads it into software.

EFFECT: enhanced performances of the terminal.

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used to provide the management of a ship with real-time tactical communication and interaction communication. The integrated communication system for a surface ship integrates communication subsystems. The system is designed to provide the management of a ship with real-time tactical communication and interaction communication through automated generation and provision of different channels and radio communication paths.

EFFECT: high quality of communication channels and reception of information, reliability and robustness of the system.

1 tbl, 1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: digital radio communication on railway transport comprises a radio receiver and hardware-software of the automated workstation of the radio communication electrical officer, connected to a digital IP network, and, mounted on each locomotive, a locomotive radio station with a receiving-transmitting device and a talk-back panel; the radio station of each locomotive and portable radio stations are configured to operate according to the DMR standard. The IP network is connected to repeaters mounted at each station and talk-back panels of process managers at each locomotive are provided with safety devices. Each locomotive radio station further includes a unit for input/output of information of first and second timeslots, a talk-back panel of the locomotive driver, a safety device, a unit for generating diagnostic data of the state of the locomotive, a receiving-transmitting device, a repeater with a radio receiver which enables to separate information according to areas of responsibility of process managers at the station, talk-back panels of which are made with a terminal in the form of an all-in-one machine with a Touch-Screen function and capable of switching screen forms.

EFFECT: high quality of voice communication and broader functional capabilities of the system.

5 cl, 1 dwg

Personal computer // 2247470

FIELD: computer equipment hardware for global computer network.

SUBSTANCE: novelty is that proposed personal computer incorporates provision for wireless access to input of service provider computer due to newly introduced transceiver device incorporating sine-wave oscillator, frequency synthesizer, transmission channel incorporating switch, carrier amplifier, single-pole signal shaper, output amplifier, antenna, pulse shaper, second switch and data request signal circuit, as well as receiving channel incorporating receiving unit, radio-frequency amplifier, double-pole amplitude detector, inverter, delay circuit, pulse shaper, register, and two decoders. Data signal transmission and reception speed is 26 Mbit/s.

EFFECT: enhanced data exchange speed.

1 cl, 5 dwg

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