Abstract: A method of Hybrid Automatic Repeat Request implementation which efficiently combines received signals from multiple H-ARQ block transmission attempts encoded by the Multi-Level Coding approach with an uncoded subset of information bits, is presented. The method provides full error correction gains of the H-ARQ scheme and decoder computational complexity reduction due to transmission of uncoded bits that does not cause significant demodulator and signal processing complexity growths. The advantages are achieved via calculation of likelihood ratio metrics and the combination of at least two different data block transmission attempts for both encoded and uncoded bits of a data block. Additionally, the calculation of likelihood ratio metrics for uncoded bits is performed in consideration of the results of the decoding of the encoded bits. Receiver decisions are then determined on values of uncoded bits based on values of the combined likelihood ratio metrics for uncoded bits.

Abstract: The multi-channel radio frequency module with frequency division of data reception and transmission contains at least two radiating elements; at least two received signal filters and at least two transmitted signal filters, each of which is tuned to pass the received and transmitted signal accordingly in a certain frequency band; at least two radio frequency receivers, each of which is connected to the received signal filter; and at least two radio frequency transmitters, each of which is connected to the transmitted signal filter. Radiating elements having two input ports; one of which is connected to the received signal filter, and the other to the transmitted signal filter, the passbands of these filters being non-overlapping. Application of the invention allows the miniaturization of the microwave PtP communication station while simultaneously providing efficient electronic beam scanning with small signal loss for beam switching and high isolation between receivers and transmitters.

Abstract: A method of Hybrid Automatic Repeat Request implementation which efficiently combines received signals from multiple H-ARQ block transmission attempts encoded by the Multi-Level Coding approach with an uncoded subset of information bits, is presented. The method provides full error correction gains of the H-ARQ scheme and decoder computational complexity reduction due to transmission of uncoded bits that does not cause significant demodulator and signal processing complexity growths. The advantages are achieved via calculation of likelihood ratio metrics and the combination of at least two different data block transmission attempts for both encoded and uncoded bits of a data block. Additionally, the calculation of likelihood ratio metrics for uncoded bits is performed in consideration of the results of the decoding of the encoded bits. Receiver decisions are then determined on values of uncoded bits based on values of the combined likelihood ratio metrics for uncoded bits.

Abstract: The invention relates to microwave technology and can be used in measuring technology and wireless communication. The technical result is a waveguide-to-microstrip transition which provides reduced signal transmission losses and increased working bandwidth together with a low wave reflection coefficient. A contacting metal layer is arranged on an upper surface of a dielectric circuit board around a micro-strip probe, without electrical contact with the micro-strip probe and a micro-strip transmission line and forming an internal area on the dielectric circuit boar being a waveguide channel area. A closed waveguide section having a slot in the area of the microstrip transmission line is arranged on the contacting metal layer. At least one metallized transition through-hole is formed along a perimeter around the area of the waveguide channel in the metal layers and in the dielectric circuit board, and at least one non-metallized through-hole is formed inside the waveguide channel area.

Abstract: A planar orthomode transducer comprises a substrate integrated resonator, two substrate integrated waveguides connected to the substrate integrated resonator, a dual polarized metal waveguide and a printed circuit board where the substrate integrated resonator and the substrate integrated waveguides are provided, wherein the substrate integrated resonator further comprises a slot aperture in one of metallization layers, and the dual polarized metal waveguide is mounted on a surface of the printed circuit board in an area of the slot aperture of the substrate integrated resonator, wherein the substrate integrated resonator is a nonfundamental orthogonal mode resonator. This enables widening of frequency band of the planar orthomode transducer, reducing of insertion losses, rise of the polarization diversity and providing for a standard dual polarized output waveguide serving for connecting the device with an antenna of various types.

Abstract: The invention comprises at least two antenna elements; at least two radio frequency units, which are connected to an antenna element; digital modem, comprising receiving and transmitting blocks, received signal distribution network, connected with radio frequency units and receiving block and is capable to forward the received signal from units to the receiving block; transmitted signal distribution network, connected with units and transmitting block and is capable to forward the transmitted signal from the transmitting block to the units; beamforming module, connected with receiving and transmitting blocks through the control channels; wherein said apparatus also comprises a clock generator and a clock signal distribution network connected with the clock generator and with radio frequency units, wherein each unit comprises variable gain blocks and a voltage-controlled oscillator with a phased locked loop synthesizer with a fractional and programmable divider, wherein the beamforming module is connected with

Abstract: The present invention is related to means for elimination of antenna orientation errors in millimeter wave point-to-point communication systems with beam steerable antennas. The advantage of the proposed method consists in accelerating antenna angular orientation adjustment for two connected transceivers. The advantage is achieved via determination of a value and a direction of an antenna orientation error and its further fast mechanical elimination. The method assumes transmission of radio signals and reception of them with measurement of the received signal powers. Determination of a direction and a value of an orientation error of the first transceiver antenna is achieved via measurement of the powers of signals transmitted by this antenna using different radiation patterns. Determination of a direction and a value of an orientation error of the second transceiver antenna is achieved via measurement of the powers of signals received by this antenna using different radiation patterns.

Abstract: The invention relates to the field of wireless communication systems operating in a duplex mode for data transmission and reception and in particular to the millimeter-wave communication apparatus with high data throughput. The communication apparatus comprises a dual-polarized antenna with a corresponding first and second ports, optimized for the signal transmission on the first polarization and the signal reception on the second polarization wherein the two polarizations are essentially orthogonal to each other; the first independent filter that is dedicated to pass the signal in the first frequency band and suppress the signals in all other bands and the second independent filter that is dedicated to pass the signal in the second frequency band and suppress the signals in all other bands wherein the two frequency bands are not overlapping; transmitter and receiver radio frequency units for processing of the received or transmitted signal correspondingly to or from the digital modem.

Abstract: The present invention generally relates to the field of electrical communication and more specifically to apparatuses and methods of phase noise mitigation for signal transmission in wideband telecommunication systems. The method for compensation of the phase noise effect on the data transmission through a radio channel is based on a possibility to present the phase noise of a reference oscillator like a random process where the main spectral density is concentrated in the low-frequency region. Therefore, the number of estimated parameters can be reduced many times to several low-frequency spectral components instead of a direct estimation in the time domain. The advantage of the method is an improvement of the estimation accuracy and a reduction of the computational complexity.

Abstract: The present invention generally relates to the field of electrical communication and more specifically to apparatuses and methods of phase noise mitigation for signal transmission in wideband telecommunication systems. The method for compensation of the phase noise effect on the data transmission through a radio channel is based on a possibility to present the phase noise of a reference oscillator like a random process where the main spectral density is concentrated in the low-frequency region. Therefore, the number of estimated parameters can be reduced many times to several low-frequency spectral components instead of a direct estimation in the time domain. The advantage of the method is an improvement of the estimation accuracy and a reduction of the computational complexity.

Abstract: The invention comprises at least two antenna elements; at least two radio frequency units, which are connected to an antenna element; digital modem, comprising receiving and transmitting blocks, received signal distribution network, connected with radio frequency units and receiving block and is capable to forward the received signal from units to the receiving block; transmitted signal distribution network, connected with units and transmitting block and is capable to forward the transmitted signal from the transmitting block to the units; beamforming module, connected with receiving and transmitting blocks through the control channels; wherein said apparatus also comprises a clock generator and a clock signal distribution network connected with the clock generator and with radio frequency units, wherein each unit comprises variable gain blocks and a voltage-controlled oscillator with a phased locked loop synthesizer with a fractional and programmable divider, wherein the beamforming module is connected with

Abstract: A method of Hybrid Automatic Repeat Request implementation which efficiently combines received signals from multiple H-ARQ block transmission attempts encoded by the Multi-Level Coding approach with an uncoded subset of information bits. The method is to provide full error correction gains of the H-ARQ scheme and decoder computational complexity reduction due to transmission of uncoded bits and does not cause significant demodulator and signal processing complexity growths. The advantages are achieved via calculation of likelihood ratio metrics and their combining between at least two different data block transmission attempts for both encoded and uncoded bits of a data block. Besides, calculation of likelihood ratio metrics for uncoded bits is performed considering results of decoding of the encoded bits. Receiver decisions on values of uncoded bits are made based on values of combined likelihood ratio metrics for uncoded bits.

Abstract: The present invention is related to means for elimination of antenna orientation errors in millimeter wave point-to-point communication systems with beam steerable antennas. The advantage of the proposed method consists in accelerating antenna angular orientation adjustment for two connected transceivers. The advantage is achieved via determination of a value and a direction of an antenna orientation error and its further fast mechanical elimination. The method assumes transmission of radio signals and reception of them with measurement of the received signal powers. Determination of a direction and a value of an orientation error of the first transceiver antenna is achieved via measurement of the powers of signals transmitted by this antenna using different radiation patterns. Determination of a direction and a value of an orientation error of the second transceiver antenna is achieved via measurement of the powers of signals received by this antenna using different radiation patterns.

Abstract: A planar orthomode transducer comprises a substrate integrated resonator, two substrate integrated waveguides connected to the substrate integrated resonator, a dual polarized metal waveguide and a printed circuit board where the substrate integrated resonator and the substrate integrated waveguides are provided, wherein the substrate integrated resonator further comprises a slot aperture in one of metallization layers, and the dual polarized metal waveguide is mounted on a surface of the printed circuit board in an area of the slot aperture of the substrate integrated resonator, wherein the substrate integrated resonator is a nonfundamental orthogonal mode resonator. This enables widening of frequency band of the planar orthomode transducer, reducing of insertion losses, rise of the polarization diversity and providing for a standard dual polarized output waveguide serving for connecting the device with an antenna of various types.

Abstract: The multi-channel radio frequency module with frequency division of data reception and transmission contains at least two radiating elements; at least two received signal filters and at least two transmitted signal filters, each of which is tuned to pass the received and transmitted signal accordingly in a certain frequency band; at least two radio frequency receivers, each of which is connected to the received signal filter; and at least two radio frequency transmitters, each of which is connected to the transmitted signal filter. Radiating elements having two input ports; one of which is connected to the received signal filter, and the other to the transmitted signal filter, the passbands of these filters being non-overlapping. Application of the invention allows the miniaturization of the microwave PtP communication station while simultaneously providing efficient electronic beam scanning with small signal loss for beam switching and high isolation between receivers and transmitters.

Abstract: Disclosed is a lens antenna comprising a dielectric lens consisting of a collimating part and an extension part, and an antenna element. The extension part of the lens comprises a substantially flat surface crossed by the axis of the collimating part, and the antenna element is rigidly fixed on the surface. The antenna element is formed by a hollow waveguide and comprises a dielectric insert with one end thereof adjacent to said surface; the size of the radiating opening of the waveguide is determined by the predefined width of the main beam and by side lobe levels of the radiation pattern of the lens antenna. The technical result of the invention is an increase in realized gain value due to the use of a waveguide antenna element with a dielectric insert, which provides impedance matching in a wide frequency bandwidth. The present invention can be used in radio-relay point-to-point communication systems, e.g.

Abstract: The invention relates to microwave technology and can be used in measuring technology and wireless communication. The technical result is a waveguide-to-microstrip transition which provides reduced signal transmission losses and increased working bandwidth together with a low wave reflection coefficient. A contacting metal layer is arranged on an upper surface of a dielectric circuit board around a micro-strip probe, without electrical contact with the micro-strip probe and a micro-strip transmission line and forming an internal area on the dielectric circuit boar being a waveguide channel area. A closed waveguide section having a slot in the area of the microstrip transmission line is arranged on the contacting metal layer. At least one metallized transition through-hole is formed along a perimeter around the area of the waveguide channel in the metal layers and in the dielectric circuit board, and at least one non-metallized through-hole is formed inside the waveguide channel area.

Abstract: Disclosed is a beam steerable communication apparatus comprising a focusing element with a focal plane, a plurality of antenna elements disposed on the focal plane of the focusing element, a beamforming network which has a plurality of antenna ports and a plurality of beamforming ports, at least one radio frequency transceiver capable to control the phase of carrier frequency signals on its independent outputs, and a baseband modem, wherein each antenna port of the beamforming network is coupled to at least one antenna element, each beamforming port of the beamforming network is coupled to an independent transceiver output, and the phase distribution law formed on the beamforming ports is determined by a baseband modem control commands to the transceivers, said phase distribution law is to combine or distribute signal power on all beamforming ports from or to at least one antenna port of the beamforming network, wherein each radio frequency transceiver includes at least a phase shifter, a Tx/Rx switch, LNA, P

Abstract: A radio-relay communication system having a radio-frequency transceiver units and a beam-scanning antenna is provided. It is configured for electronic scanning by switching between primary antenna elements. The system provides electronic scanning without losses or with low losses with each radio-frequency transceiver unit being electrically connected to at least one primary antenna element of the beam-scanning antenna. The antenna beam scanning is accomplished through the signal distribution units selecting at least one of radio-frequency transceiver units for processing of the received and generation of the transmitted signals in a given spatial direction.

Abstract: An electronically beam-steerable antenna device comprises a dielectric lens having at least one flat surface, a high frequency dielectric board, a plurality of at least one primary antenna element with at least one transmission line formed on the high frequency dielectric board, and a switching network electrically connected to the said plurality of at least one primary antenna element and at least one transmission line and adapted to apply electric power to the at least one primary antenna element. The switching network is a semiconductor integrated circuit mounted in or on the high frequency dielectric board, and the high frequency dielectric board with the plurality of at least one antenna element and at least one transmission line formed thereon is adjacent to the flat surface of the dielectric lens. The electronically beam steerable antenna device according to the present invention allows for electronic beam steering in a continuous angle sector while increasing radiation efficiency.