Prediction Based Adaptive Modulation and Coding for MIMO Systems on Flat Rayleigh Fading Channels
نویسندگان
چکیده
Channel variation during channel-stateinformation (CSI) feedback makes the information out-of-date and deteriorates system performance. Thus, channel prediction is essential for adaptive transmission techniques. In this paper, an adaptive modulation and coding scheme for multiple-input multiple-output (MIMO) systems on flat Rayleigh fading channels is proposed based on channel prediction. For a given modulation and coding set (MCS), the average packet error rates are derived as functions of the predicted channel information (short-term CSI) and the prediction error variance (long-term CSI). Based on the long-term and the short-term CSI’s, the required transmit power for each MCS option is obtained. Simulation results show that the proposed scheme efficiently compensates the performance degradation introduced by the feedback delay.
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