OTFS-Based Downlink Network-Coded Multiple Access With Joint Amplitude-Phase Design

被引：0
|
作者：
Ren, Peng [1 ]
Cao, Bohao [1 ]
Xiang, Zheng [1 ]
Yang, Long [1 ]
Xu, Baoyi [1 ]
Li, Yi [1 ]
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2024年 / 13卷 / 06期
关键词：
Symbols; Decoding; Throughput; Error probability; Power distribution; Downlink; Doppler effect; Network-coded multiple access; orthogonal time-frequency space; high Doppler; throughput; power distribution coefficient; relative phase offset; NOMA;
D O I：
10.1109/LWC.2024.3382152
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter designs an orthogonal time-frequency space (OTFS) enabled network-coded multiple access (NCMA) system for enhancing the throughput in high-mobility scenarios. For the designed system, the impact of power distribution and relative phase offset is theoretically analyzed and the upper-bound symbol error probability is derived into a closed-form expression. To further minimize the upper-bound symbol error probability, a joint amplitude-phase optimization scheme is proposed with using genetic algorithm. Finally, the simulation results reveal that the proposed scheme achieves significant throughput enhancement in high mobility scenarios.
引用
收藏
页码：1576 / 1580
页数：5
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