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Paper detail

Frequency and time domain packet scheduling based on channel prediction with imperfect CQI in LTE

Channel-dependent scheduling of transmission of data packets in a wireless system is based on measurement and feedback of the channel quality. To alleviate the performance degradation due to simultaneous multiple imperfect channel quality information (CQI), a simple and efficient packet scheduling (PS) algorithm is developed in downlink LTE system for real time traffic. A frequency domain channel predictor based on Kalman filter is first developed to restore the true CQI from erroneous channel quality feedback. Then, a time domain grouping technique employing the joint of Proportional Fair (PF) and Modified Largest Weighted Delay First (M-LWDF) algorithms is used. It was proved this proposal achieves better performance in terms of system throughput and packet loss ratio by simulation results.

preprint2013arXivOpen access
Yongxin WangKumbesan SandrasegaranXinning ZhuJingjing FeiXiaoying KongCheng-Chung Lin
Networking and Internet Architecture
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Yongxin WangKumbesan SandrasegaranXinning ZhuJingjing FeiXiaoying KongCheng-Chung Lin

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