摘要
全双工(FD)通信方式能够将双向中继(TWR)系统的频谱效率提高一倍,但是解码可靠性受到残留自干扰的恶化.本文研究非正交FD-TWR系统的差错性能.在中继节点自干扰消除性能强于用户节点的条件下,分析成对差错概率在高发射功率区间的渐进表达式,进而导出系统分集增益和编码增益.针对系统编码结构,分析分集增益的可达条件.与频谱效率相同的半双工TWR系统相比,充分抑制自干扰和采用满分集预编码的FD-TWR系统在误比特率为10-3时具有20d B的差错性能优势.
The combination of full-duplex（ FD） communication and two-way relaying（ TWR） provides higher spectral efficiency,but the decoding reliability is worsen by residual self-interference（ RSI）. The error performance of non-orthogonal FD-TWR is investigated. With the assumption that the relay has more efficient self-interference cancellation than the user nodes,the diversity and coding gains are derived with the help of the approximate expression of pair-wise error probability in the high transmission power region. Based on the coding structure,the achievability of the diversity gain is analyzed. Compared with the half-duplex TWR system with the same spectral efficiency,the FD-TWR system with suppressed RSI and full-diversity precoder has the superiority of 20 dB on the error performance at the bit error rate of 10-（-3）.
作者
冯文江
刘国岭
孔乾坤
包涛涛
唐冰蓝
应腾达
FENG Wen-jiang;LIU Guo-ling;KONG Qian-kun;BAO Tao-tao;TANG Bing-lan;YING Teng-da(College of Communication Engineering,Chongqing University,Chongqing 400044,China)
出处
《电子学报》
EI
CAS
CSCD
北大核心
2018年第6期1397-1403,共7页
Acta Electronica Sinica
基金
重庆市基础科学与前沿技术研究重点项目(No.cstc2017jcyj BX0047)
关键词
全双工通信
双向中继
残留自干扰
成对差错概率
满分集预编码
协作通信
full-duplex
two-way relaying
residual self-interference
pair-wise error probability
full-diversity precoding
cooperative communication
