Method and apparatus for reconstructing multiple high frequency signals transmitted on a single channel radio link

摘要

Method for reconstructing pairs of source signals (S1, S2; S1V, S1H; S2V, S2H) transmitted in a high frequency modulation on a single channel radio link, "short section", comprising a first antenna (AT1) and a second antenna (AT2) transmitting respective useful signals (TX1, TX2, TX1V, TH1H, TX2V, TX2H) modulated source signals (S1, S2; S1V, S1H, S2V, S2H) associated, receiving a first antenna ( AR1) and a second antenna (AR2), respectively, a first signal (RX1) is the sum of the first useful signal (TX1, TX1V, TH1H) transmitted by the first antenna (AT1) of the two transmission antennas (AT1 , AT2) and at least one interfering component transmitted by the antenna tra transmission (AT2), and a second signal (RX2) which is the sum of the second useful signal (TX2; TX2V, TX2H) transmitted by the second transmit antenna (AT2) and at least one interfering component transmitted by the first antenna (AT1), a receiver / demodulated r (D1, D2; D1, D2, D3, D4) to reconstruct each source signal (S1, S2; S1V, S1H, S2V, S2H) transmitted, comprising the following steps: - offset 90 signals (RX2; RX2V, RX2H) received by an antenna (AR2) of the two antennas (AR1, AR2) with the signal generation offset (RX2-90; RX2V-90, RX2H-90) associated; - adding the shifted signals 90 (RX2-90; RX2V-90, RX2H-9.0) to the signal (RX1; RX1V, RX1H) corresponding emitted by the other antenna (AR1) of the two antennas (AR1, AR2) with generating a signal comprising only the components (TX1; T1V, TX1H) derived from the first transmit antenna (AT1); - performing a subtraction between the signal (RX1) received by the first antenna (AR1) and the offset signal 90 (RX290) for generating a signal comprising only the components (TX2; TX2V, TX2H) derived from the second transmit antenna ( AT2); - demodulating (D1, D2) the separated signals.