Adaptive modulation in decode-and-forward cooperative communications with limited source-relay CSI

Min Kuan Chang*, Feng-Tsun Chien

*Corresponding author for this work

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

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.

原文English
文章編號6940230
頁(從 - 到)2157-2160
頁數4
期刊IEEE Communications Letters
18
發行號12
DOIs
出版狀態Published - 1 十二月 2014

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