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Improved CQI Prediction Method in TD-HSDPA System
Author(s): 
Pages: 113-117
Year: Issue:  1
Journal: Video Engineering

Keyword:  TD-HSDPA自适应编码调制信道质量指示;
Abstract: 针对TD-HSDPA系统中自适应调制编码的实现过程,综合考虑信噪比与信道质量指示映射的准确性和反馈时延对系统性能的影响,提出了一种能补偿其带来的AMC性能下降的CQI预测方法,并通过MATLAB搭建了TD-HSDPA仿真链路对其进行了仿真验证.该方法在基站端利用上报的CQI历史值进行预测,同时根据接收数据的准确性,在UE端对SNR与CQI的映射表进行调整.仿真结果表明,该方案在中高速移动环境下能带来较大的吞吐量增益.
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