標題: Adaptive Modulation in Decode-and-Forward Cooperative Communications With Limited Source-Relay CSI
作者: Chang, Min-Kuan
Chien, Feng-Tsun
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Multi-node cooperative communications;adaptive modulation;decode-and-forward protocol
公開日期: 1-十二月-2014
摘要: In this letter, we study the problem of adaptive modulation (AM) in cooperative decode-and-forward (DF) relaying systems with limited channel state information (CSI) of the source-relay link. We first develop the signal-to-noise ratio (SNR)-based opportunistic AM and obtain the regions of the source-destination and relay-destination link SNR, by which whether cooperative relaying is needed and what constellation size should be chosen can be determined without requiring the source-relay link CSI. We also propose the probabilistic AM to further enhance the transmission rate. Simulation results demonstrate the effectiveness of the proposed AM criteria.
URI: http://dx.doi.org/10.1109/LCOMM.2014.2366099
http://hdl.handle.net/11536/124268
ISSN: 1089-7798
DOI: 10.1109/LCOMM.2014.2366099
期刊: IEEE COMMUNICATIONS LETTERS
Volume: 18
Issue: 12
起始頁: 2157
結束頁: 2160
顯示於類別:期刊論文


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  1. 000347873200024.pdf