Joint Power Allocation and Adaptive M-QAM Algorithm in Cooperative System

Abstract

Abstract: In a decode-and-forward Rayleigh fading system with relay nodes, this paper derived a tight upper bound on symbol error rate (SER) in the high signaltonoise ratio (SNR) regime, and then proposed a joint power allocation and adaptive M-QAM algorithm. The algorithm requires transmission nodes to have only the channel statistic state information (CSSI), which spends fewer overheads than power schemes with channel instantaneous state information (CISI). The simulation results show that the derived upper bound approximates the Monte Carlo results and the proposed algorithm achieves performance gain.
Key words：

Key words: coopera14tive communication, decode-and-forward(DF), suboptimum power allocation, adaptive

CLC Number:

TN 925.3

CHEN Yong, ZHAN Ao, HE Chen, JIANG Ling-Ge. Joint Power Allocation and Adaptive M-QAM Algorithm in Cooperative System[J]. Journal of Shanghai Jiaotong University, 2012, 46(06): 910-915.

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