A Deep Study on Layered Multi-Relay Non-Orthogonal Amplify-Forward Networks

被引：0

作者：

Padidar, Payam ^{[1
]}

Ho, Pin-Han ^{[1
,2
]}

Ji, Yancheng ^{[2
]}

Duan, Wei ^{[2
]}

机构：

[1] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada

[2] Nantong Univ, Sch Elect & Informat, Nantong 226019, Peoples R China

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2020年 / 19卷 / 01期

基金：

中国国家自然科学基金; 加拿大自然科学与工程研究理事会;

关键词：

Relays; Encoding; Distortion; Signal to noise ratio; NOMA; Multiplexing; MIMO communication; Distortion exponent; diversity-multiplexing tradeoff; layered broadcast code; relay channel; DISTORTION SNR EXPONENT; SUCCESSIVE REFINEMENT; TRANSMISSION; BROADCAST; DIVERSITY; PERFORMANCE; TRADEOFF; CHANNELS; ACCESS; SYSTEMS;

D O I：

10.1109/TWC.2019.2944613

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：

The paper introduces a cross-layer design for transmission of Successive Refinement (SR) source code interplayed with non-orthogonal layered code, deployed over a half-duplex multi-relay Non-orthogonal Amplify-Forward (NAF) network. Assuming the Channel State Information (CSI) is not available at the source node, firstly the achievable layered Diversity-Multiplexing Tradeoff (DMT) curve is derived. Then, by taking Distortion Exponent (DE) as the figure of merit, several achievable lower bounds are proved and the optimal expected distortion performance under high Signal to Noise Ratio (SNR) approximation is explicitly obtained. It is shown that the proposed coding can achieve the Multi-Input Single-Output (MISO) upper bound under certain regions of bandwidth ratios, by which the optimal performance in these regions can be explicitly characterized. Further the non-orthogonal layered coding scheme is extended to a multi-hop MIMO Decode-Forward (DF) relay network and set of DE lower bounds is derived. Simulation results confirm the effectiveness of the proposed scheme under general SNR values and compared with its counterparts.

引用

页码：354 / 366

页数：13

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