Iterative Phase Noise Suppression for Full-Duplex Communication Systems  

作　　者：Pengxin Guan Yiru Wang Hongkang Yu Yuping Zhao 

机构地区：[1]School of Electronics Engineering and Computer Science,Peking University,Beijing 100871,China [2]Wireless Product Research and Development Institute,ZTE Corporation,Shenzhen 518057,China

出　　处：《China Communications》2023年第2期226-234,共9页中国通信（英文版）

基　　金：supported by National Key R&D Program of China under Grant No.2020YFB1805102。

摘　　要：Oscillator phase noise is one of the bottlenecks that limits the self-interference(SI)cancellation capability of full-duplex systems.In this paper,we propose a method for the suppression of common phase error(CPE)and intercarrier interference(ICI)induced by the phase noise in full-duplex orthogonal frequency division multiplexing(OFDM)systems.First,we regard the effect of CPE as a portion of the SI channel and perform estimation,reconstruction and elimination in the time domain.Then,the ICI signal is estimated and suppressed in the frequency domain.Additionally,by analysing the performance of proposed algorithm,we further develop an iterative mechanism to reduce the parameter estimation error and improve SI cancellation capability.Simulation results show that the proposed method has a significant SI cancellation capability improvement over the traditional SI cancellation schemes.

关 键 词：full-duplex SELF-INTERFERENCE phase noise SUPPRESSION 

分 类 号：TN92[电子电信—通信与信息系统]