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An Efficient Adaptive Modulation and Coding Scheme on Downlink Rayleigh Fading Channels Considering Channel-State-Information Feedback Delay  

Rhee, Du-Ho (연세대학교 전기전자공학과)
Hwang, Hae-Gwang (연세대학교 전기전자공학과)
Sang, Young-Jin (연세대학교 전기전자공학과)
Kim, Kwang-Soon (연세대학교 전기전자공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.11C, 2006 , pp. 1100-1106 More about this Journal
Abstract
In downlink of mobile communication systems, the feedback delay between channel estimation and actual transmission causes inaccuracy in channel-state-information (CSI) and this results in performance degradation. In order to overcome this phenomenon, channel prediction is inevitable. In this paper, an adaptive transmission scheme based on channel prediction is proposed and its performance is evaluated. From simulation results, it is shown that the performance degradation due to the feedback delay is successfully mitigated by using the proposed scheme.
Keywords
Adaptive Modulation and Coding (AMC); Channel Prediction; CSI Feedback Delay; Power Allocation; Rayleigh Fading;
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