计算机技术与发展2017，Vol.27Issue(1)：173-176,181,5.DOI:10.3969/j.issn.1673-629X.2017.01.039
双向全双工中继系统自干扰抑制
Self-interference Cancellation in Bidirectional Full-duplex MIMO Relay System
摘要
Abstract
As a key technology of 5G,Full-Duplex Relay (FDR) technology with its advantages of frequency reuse is concerned by the industry. FDR not only can improve the system capacity but also be used at very low cost to expand coverage. However,the characteristics of simultaneously sending and receiving signals of the same frequency result in serious self-interference of loop,which is a major factor restricting the development. For the core issue,Self-Interference Cancellation (SIC),in FDR system,the method of special domain is used to eliminate interference in MIMO in order to reduce the bit error rate and improve the system capacity. FDR is combined with bidi-rectional communication to establish bidirectional full-duplex relay system model. The encoder and decoder of relay nodes is designed based on original zero space projection,and time-domain method is applied to eliminate interference from the source node receiving end. Theoretical analysis and simulation results show that this model can effectively eliminate the bidirectional FDR system self-interference, greatly improving system performance.关键词
全双工中继/自干扰抑制/MIMO/空域SICKey words
full-duplex relay/self-interference cancellation/MIMO/spacial SIC/FDR分类
信息技术与安全科学引用本文复制引用
巩玉林,周成杰..双向全双工中继系统自干扰抑制[J].计算机技术与发展,2017,27(1):173-176,181,5.基金项目
国家“973”重点基础研究发展计划项目(2014AA01A705) （2014AA01A705）
