摘要
文章基于迫零波束成形技术及不完备信道状态信息,研究了大规模双向多输入多输出中继网络的系统频谱效率和系统能量效率。首先,在中继站的天线数量M足够大时获取用户端信干噪比的一般表达式,得到系统频谱效率与能量效率的一般表达式。其次,获取了功率缩放方案下系统频谱效率与能量效率的渐进值。对于非零信干噪比,当中继站及每个用户终端的发射功率均降低为原来的M分之一,系统能量效率将大幅度提升。
This paper studies the system spectral efficiency and system energy efficiency of large-scale bidirectional multi input multi output relay networks based on zero forcing beamforming technology and incomplete channel state information.Firstly,when the number of antennas M in the relay station is large enough,obtain a general expression for the signal-to-noise ratio of the user end,and obtain a general expression for the spectral efficiency and energy efficiency of the system.Secondly,the asymptotic values of system spectral efficiency and energy efficiency under the power scaling scheme were obtained.For non zero signal-to-noise ratio,the transmission power of the intermediate station and each user terminal is reduced to one M of the original,and the system energy efficiency will be greatly improved.
作者
汪宏艳
WANG Hongyan(Nanjing Vocational College of Information Technology,Nanjing 210023,China)
出处
《现代信息科技》
2023年第22期57-62,共6页
Modern Information Technology
基金
南京信息职业技术学院高层次人才科研启动基金项目(YB20210501)。
