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中文摘要：
高速移动场景下多普勒频移激增,对信道估计的准确性提出了很高要求,仅仅依靠传统的信道估计已不能很好反映信道状态,使用估计的信道状态信息进行预编码操作,会使系统的误比特率性能急剧下降。基于上述情况,给出了基于统计信道状态信息的码本预编码方法,利用信道的统计信息改善信道估计的准确性,有效提高了系统的误比特率性能,并显著降低了码本选择的计算复杂度。
英文摘要：
In high-speed mobile scenario,the increase of Doppler shift would raises a great claim on accuracy of channel estimation.Conventional channel estimation could not fairly reflect the channel state at that moment.BER（ Bit Error Rate）performance of the system would decline sharply when the estimated channel-state information is used for pre-coding.In light of this,codebook pre-coding method based onstatisticalinformation of channel state is proposed,in which the statistical information of is used to enhance the accuracy of channel estimation,thus effectively improves the BER performance and obviously reduces the computation complexity of codebook selection.
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