论文标题
通过自适应顺序的LS算法，数字辅助的光子模拟域自我干扰取消带有带的全双工MIMO系统
Digitally-assisted photonic analog domain self-interference cancellation for in-band full-duplex MIMO systems via LS algorithm with adaptive order
论文作者
论文摘要
使用具有适应性顺序的最小平方（LS）算法，建议使用数字辅助的光子模拟域自减去取消取消（SIC）和频率下调方法。 SIC和频率下调是通过双平行的MACH-ZEHNDER调制器（DP-MZM）在光学结构域中实现的，而下调信号由具有适应性顺序的LS算法处理，该信号的适应性顺序用于跟踪多路径自相关（SI）通道的响应（SI）通道（SI）通道和参考信号的响应。所提出的方法可以克服MIMO场景中SIC的多径类似物参考信号的重建难度，并且还可以解决当无线环境变化时未优化参考重建算法的顺序。进行实验以验证该概念。当Si信号的载流子频率分别为10 GHz时，将达到30.2、26.9、23.5、19.5和15.8 dB SIC深度，并且分别为0.1、0.25、0.5、1.5、1和2 GBAUD。还针对不同的MIMO多径SI信号验证了LS算法与自适应顺序的收敛性。
A digitally-assisted photonic analog domain self-interference cancellation (SIC) and frequency downconversion method is proposed for in-band full-duplex multiple-input multiple-output (MIMO) systems using the least square (LS) algorithm with adaptive order. The SIC and frequency downconversion are achieved in the optical domain via a dual-parallel Mach-Zehnder modulator (DP-MZM), while the downconverted signal is processed by the LS algorithm with adaptive order that is used to track the response of the multipath self-interference (SI) channel and reconstruct the reference signal for SIC. The proposed method can overcome the reconstruction difficulty of the multipath analog reference signal for SIC with high complexity in the MIMO scenario and can also solve the problem that the order of the reference reconstruction algorithm is not optimized when the wireless environment changes. An experiment is carried out to verify the concept. 30.2, 26.9, 23.5, 19.5, and 15.8 dB SIC depths are achieved when the SI signal has a carrier frequency of 10 GHz and baud rates of 0.1, 0.25, 0.5, 1, and 2 Gbaud, respectively. The convergence of the LS algorithm with adaptive order is also verified for different MIMO multipath SI signals.
