A closed-form sum-rate lower bound for amplify-and-forward multi-way relay networks

Lu, Yingzhi; Fang, Zhaoxi

doi:10.1016/j.aeue.2018.07.032

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…The authors showed that the sum capacity can be asymptotically achieved within a constant gap at high SNR. The authors in [71] investigated the sum-rate analysis of the mRC with AF relaying and full data exchange strategy. The authors analyzed the sum-rate lower and upper bounds.…”

Section: A Capacity Analysismentioning

confidence: 99%

An Overview on Multiway Relay Communications: Fundamental Issues, Recent Advances, and New Challenges

Wang,

Yuan

2020

Preprint

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To address the coverage and capacity challenges in fifth-generation (5G) wireless networks, the relay technique has been considered as a promising solution and recently attracted great attentions from academia. The multiway relay channel (mRC), which serves as a fundamental building block of a relay network, defines the family of all possible information-flow patterns between a relay node and its neighboring nodes. Combined with several new techniques, such as physical-layer network coding (PLNC), signal and interference alignments, multi-input multi-output (MIMO), etc., the mRC exhibits superior capability to assist multiuser information exchange. In this article, we aim to provide a comprehensive overview on the state-of-the-art of the mRC from the perspectives of both information-theoretic and communication-theoretic studies. The key results are summarized and discussed to identify the current research progress of the mRC. Open problems and research challenges are also discussed to spur future research towards the mRC.Index Terms-Multiway relay channel (mRC), physical-layer network coding (PLNC), multi-output multi-input (MIMO), degrees of freedom (DoF), precoding, relay selection.

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Section: A Capacity Analysismentioning

confidence: 99%