通信学报2017，Vol.38Issue(8)：28-36,9.DOI:10.11959/j.issn.1000-436x.2017161
基于降维原理的全双工射频域快速自干扰抑制算法研究
Quick self-interference cancellation algorithm based on dimension reduction at radio frequency domain in full duplex system
摘要
Abstract
In a full-duplex transceiver,to calculate the variable attenuator and phase shifter parameters of the self-interference (SI) cancellation structure at the radio frequency (RF) domain was not a convex quadratic conic programming problem,which led to a slow convergence speed.To solve the problem,a quick SI cancellation algorithm based on dimension reduction was proposed.It transformed the estimation of the above two variables into that of the cross correlation of the received SI and the SI reference signals,to reduce the search dimension and iteration numbers of the optimization problem and improve the convergence speed of the SI cancellation at the RF domain.By analysis and simulation,compared to the existing adaptive SI cancellation algorithms at the RF domain,the proposed algorithm obtains the optimal values of the variable attenuator and phase shifter by two iterations,and then significantly improves the convergence speed of the SI cancellation at the RF domain.关键词
同时同频全双工/射频域自干扰抑制/降维/收敛速度Key words
co-frequency and co-time full duplex/RF self-interference cancellation/dimension reduction, convergence speed分类
信息技术与安全科学引用本文复制引用
王俊,赵宏志,唐友喜..基于降维原理的全双工射频域快速自干扰抑制算法研究[J].通信学报,2017,38(8):28-36,9.基金项目
国家自然科学基金资助项目(No.61531009,No.61471108) （No.61531009,No.61471108）
国家重大专项基金资助项目(No.2016ZX03001009) （No.2016ZX03001009）
中央高校基本科研业务费专项基金资助项目 The National Natural Science Foundation of China (No.61531009,No.61471108),The National Major Projects of China (No.2016ZX03001009),The Fundamental Research Funds for the Central Universities of China （No.61531009,No.61471108）
