A Novel Iterative Cancellation Receiver Applied to the Simultaneous Transmission of Communication Signal and Ranging Signal

This letter introduces the combination and separation of the waveforms in the simultaneous transmission of a communication signal and ranging signal. A novel iterative cancellation receiver relating to threshold detection and an iterative loop is proposed to counteract the mutual interference caused by waveform separation. The separated communication signal and ranging signal serve as the prior condition for each other to achieve the virtuous cycle, that is to say the lower communication bit error rate (BER) makes the separated ranging signal more accurate, while the smaller ranging phase offset allows it to have a weaker interference on the communication signal. The BER and ranging jitter results corroborated by Monte Carlo simulation show that the proposed iterative cancellation receiver exhibits higher communication reliability and ranging accuracy compared to the traditional receiver. Moreover, the performance gain is more prominent with the decrease of preset threshold or the increase of ranging modulation index.