In this letter, we consider single-cell, single-user systems wherein uplink and downlink user equipment communicate with a full-duplex relay. Due to the near-far problem, the self-interference (SI) can be 100-1000x the received signal power. In this context, we consider the adaptive Least Mean Squares (LMS) algorithm to estimate the SI channel and then subtract the SI from the desired received signal before the analog-to-digital converter (ADC). We measure the robustness of this technique in terms of bit error rate (BER) and spectral efficiency.

翻译：在这封信中,我们考虑了单细胞、单一用户系统,使用户设备与全复式中继系统进行上行和下行连接。由于近距离问题,自干预(SI)可以是接收信号功率的100-1000倍。在这方面,我们考虑了适应性最低中值方算法,以估计SI频道,然后从模拟数字转换器(ADC)之前所需的接收信号中减去SI。我们用位误差率(BER)和光谱效率来衡量这一技术的稳健性。