Uplink NOMA Random Access Systems With Space-Time Line Code

被引：19

作者：

Seo, Jun-Bae ^{[1
]}

Jin, Hu ^{[1
]}

Joung, Jingon ^{[2
]}

Jung, Bang Chul ^{[3
]}

机构：

[1] Hanyang Univ, Div Elect Engn, Ansan 15588, South Korea

[2] Chung Ang Univ, Sch Elect & Elect Engn, Seoul 06974, South Korea

[3] Chungnam Natl Univ, Dept Elect Engn, Daejeon 34134, South Korea

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2020年 / 69卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

NOMA; space-time line code (STLC); random access; power control; successive interference cancellation;

D O I：

10.1109/TVT.2020.2974460

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work proposes a random access system with uplink non-orthogonal multiple access (NOMA), where users transmit their packets by using the space-time line code (STLC) to fully exploit the spatial diversity without channel state information at the receiver. More specifically, users with a single antenna estimate channel gain from the base station (BS) with two antennas, encode the information using the STLC, and then transmit it using transmit power control so that the received power of their packets at the BS can be one of the predetermined values. The BS decodes the received packets via STLC decoding and the successive interference cancellation technique. Owing to spatial diversity, we show that the proposed scheme improves energy efficiency in comparison to the conventional system with a single antenna BS.

引用

页码：4522 / 4526

页数：5

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