摘要
针对一个全双工(Full Duplex, FD)双向通信系统提出了中继发射波束形成器的设计问题.该系统的两个源结点配备多根天线,附近的每个中继结点配备两根天线,一根用于传输,另一根用于接收.中继处在有限的发射功率和使用迫零归零技术下,设计了两种具有迭代线性复杂度的中继波束成形器:最小化两个源结点加权均方误差和最大化较小源结点的信噪比.通过对加权总和传输速率和平均运行时间的仿真,数值实验验证了改进加权最小均方误差波束成形器的有效性和高效性.
In this paper,we consider the transmitter beamformer design at relays for a full-duplex two-way relay system,where the two sources are equipped with multiple antennas,and each one of the nearby relays is equipped with two antennas with one for transmission and the other for reception.Under the constraints of the limited transmit power and zero forcing nulling technique used at the relays,we propose two linear relay beamformer designs that are respectively to iteratively minimize the weighted mean square error of the two source nodes and maximize the signal to noise ratio of the smaller one of the two source nodes.The effectiveness and efficiency of the proposed designs are evaluated by numerical experiments in terms of the weighted sum rate and the CPU running time.
作者
罗晓梅
安子畅
陈万
刘伟
LUO Xiaomei;AN Zichang;CHEN Wan;LIU Wei(School of Information Engineering,Nanchang University,Nanchang 330031;State Key Lab of Integrated Service Networks,Xidian University,Xi an 710071)
出处
《南京信息工程大学学报（自然科学版）》
CAS
北大核心
2023年第2期231-236,共6页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
基金
国家自然科学基金(61661029)。
关键词
全双工
自干扰
改进的加权最小均方误差
半正定松弛
克罗内克积
full duplex(FD)
self-interference
improved weighted minimum mean square error(IMP-WMMSE)
semidefinite relaxation
Kronecker product
