Real-Time Transmission Control for Multichannel NOMA Random Access Systems

被引：5
|
作者：
Seo, Jun-Bae [1 ]
De, Swades [2 ,3 ]
Jin, Hu [4 ]
机构：
[1] Gyeongsang Natl Univ, Dept Informat & Commun Engn, Jinju 52828, South Korea
[2] Indian Inst Technol Delhi, Dept Elect Engn, New Delhi 110016, India
[3] Indian Inst Technol Delhi, Bharti Sch Telecommun, New Delhi 110016, India
[4] Hanyang Univ, Sch Elect Engn, Ansan 15588, South Korea
来源：
IEEE INTERNET OF THINGS JOURNAL | 2023年 / 10卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
NOMA; Uplink; Throughput; Delays; Internet of Things; Signal to noise ratio; Real-time systems; Nonorthogonal multiple access (NOMA); online control; random access (RA) procedure; NONORTHOGONAL RANDOM-ACCESS;
D O I：
10.1109/JIOT.2022.3233433
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
To improve the throughput per channel in multichannel nonorthogonal multiple access (NOMA) random access (RA) system, users (re)transmit their packet to one of the channels using transmit power control such that the receive power of the packets at the base station (BS) can be one of the predefined levels called target receive power (TRP). The BS decodes the received packets in the descending order of the TRPs at each slot using successive interference cancellation (SIC). This work proposes the real-time transmission algorithm for users to (re)transmit their packet for maximization of the system throughput. To do this, the BS estimates the number of backlogged users in real time and adjusts and broadcasts the throughput-optimal (re)transmission probability in the algorithm. We analyze the average RA delay performance of the proposed algorithm and demonstrate its performance even with time-varying traffic.
引用
收藏
页码：8984 / 8995
页数：12
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