文档介绍:第网络首发时间:卷第 期2022-06-22 09:12:36南 京 邮 电 大 学 学 报 自 然 科 学 版
网络首发地址:42 3 . communication systems
1,2 1,2
WEI Daiwang , FU Youhua
æ1.College of Electronic and Optical Engineering and College of Microelectronics, ö
ç ÷
ç Nanjing University of Posts and Telecommunications, Nanjing 210023, China ÷
ç2.National and Local Joint Engineering Laboratory of RF Integration and Micro⁃Assembly Technology,÷
è ø
Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Abstract
: In non⁃orthogonal multiple access ( NOMA) systems, the traditional far⁃near paring scheme
causes a low system throughput. In this regard, a novel user pairing algorithm is proposed to adaptively
select the optimal group for pairing according to the number of users. Firstly, the users are ordered based
on the user channel gain. And then the users are divided into different groups, each of which contains an
even number of users. In each group, the first half and the second half users are paired in a fixed
mann