基于正则化的全双工通信系统非线性自干扰消除方法

A Regularization Based Nonlinear Self-Interference Suppression Method for Full Duplex Communication Systems

针对多径信道和功率放大器非线性特性对同时同频全双工通信系统性能的影响问题,提出一种基于正则化的联合自干扰消除方案。该方案能够消除线性和非线性自干扰信号,并且可以缓解传统算法存在的数值不稳定特性。搭建仿真平台对所提方案进行仿真验证,结果表明,与传统线性消除和非线性消除方案相比,该方案具有较高的消除性能增益。

The nonlinear effect of power amplifier causes the strong nonlinear self-interference signal in the co-time co-frequency full duplex communication system,which reduces the communication performance of the system.A joint self-interference suppression method based on regularization is proposed.Taking into account both the multipath channel and the nonlinear characteristics of power amplifier,the proposed scheme can eliminate the linear and nonlinear self-interference signals,and alleviate the numerical instability of the traditional algorithms.To analyze the performance of the method,a simulation platform is built.Numerical simulation results show that the proposed scheme has higher gain than the traditional linear and nonlinear cancellation schemes.