Relay-Aided NOMA in Uplink Cellular Networks

被引：27

作者：

Shin, Wonjae ^{[1
]}

Yang, Heecheol ^{[2
]}

Vaezi, Mojtaba ^{[1
]}

Lee, Jungwoo ^{[2
]}

Poor, H. Vincent ^{[1
]}

机构：

[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[2] Seoul Natl Univ, Dept Elect & Comp Engn, Seoul 08826, South Korea

来源：

IEEE SIGNAL PROCESSING LETTERS | 2017年 / 24卷 / 12期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

Non-orthogonal multiple access (NOMA); relay; NONORTHOGONAL MULTIPLE-ACCESS; INTERFERENCE ALIGNMENT; FREEDOM; PERFORMANCE;

D O I：

10.1109/LSP.2017.2755049

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：

A new relay-aided non-orthogonal multiple access (NOMA) technique is proposed for multi-cell uplink cellular networks in which each cell supports K single-antenna users by its respective base station (BS) equipped with N (<< K) antennas. Cooperative relaying transmission is used to accommodate more than one user per orthogonal resource block in the context of interference-limited cellular networks. With the proposed relay-aided NOMA, an Alamouti structure of the desired symbol can further be generated at each BS free of interference, which gives rise to diversity gain of two. The proposed scheme does not require any channel state information (CSI) at users. Further, only limited CSI is required at relays and BSs, which can greatly reduce the control overhead.

引用

页码：1842 / 1846

页数：5

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