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: 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 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 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.