On the Diversity–Multiplexing Tradeoff in Multiple-Relay Network
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Publication:4974088
DOI10.1109/TIT.2009.2032740zbMATH Open1367.94052arXiv0803.3117OpenAlexW2102828629MaRDI QIDQ4974088
Shahab Oveis-Gharan, A. K. Khandani, Alireza Bayesteh
Publication date: 8 August 2017
Published in: IEEE Transactions on Information Theory (Search for Journal in Brave)
Abstract: This paper studies the setup of a multiple-relay network in which half-duplex multiple-antenna relays assist in the transmission between a/several multiple-antenna transmitter(s) and a multiple-antenna receiver. Each two nodes are assumed to be either connected through a quasi-static Rayleigh fading channel, or disconnected. We propose a new scheme, which we call extit{random sequential} (RS), based on the amplify-and-forward relaying. We prove that for general multiple-antenna multiple-relay networks, the proposed scheme achieves the maximum diversity gain. Furthermore, we derive diversity-multiplexing tradeoff (DMT) of the proposed RS scheme for general single-antenna multiple-relay networks. It is shown that for single-antenna two-hop multiple-access multiple-relay () networks (without direct link between the transmitter(s) and the receiver), the proposed RS scheme achieves the optimum DMT. However, for the case of multiple access single relay setup, we show that the RS scheme reduces to the naive amplify-and-forward relaying and is not optimum in terms of DMT, while the dynamic decode-and-forward scheme is shown to be optimum for this scenario.
Full work available at URL: https://arxiv.org/abs/0803.3117
Related Items (2)
Diversity–Multiplexing Tradeoff in Multiple-Access Channels ⋮ On the Diversity Gain of AF and DF Relaying With Noisy CSI at the Source Transmitter
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