期刊文献+

高鲁棒性的CMMB小数频偏估计算法

Robust Frequency Estimation Algorithm for CMMB Receiver
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摘要 由于采用了OFDM调制方式,CMMB手机电视系统对载波频率同步非常敏感。在分析直流分量对频偏估计影响原理的基础上,基于差分变换提出了一种小数频偏估计的改进算法,该算法与传统算法相比,在仅略微增加运算量的基础上有效地抑制了直流分量对估计精度的影响。 Due to the adoption of the OFDM modulation mode, the estimation of carrier frequency offset is a crucial issue in a CMMB receiver. In this paper, on the basis of analyzing the direct current (DC) offset effect, a novel frequency offset estimation algorithm is proposed. The validity of the pro- posed estimators is confirmed by simulations.
出处 《电视技术》 北大核心 2013年第5期5-7,14,共4页 Video Engineering
基金 "新一代宽带无线移动通信网"国家重大专项(2012ZX03001-003)
关键词 中国移动多媒体广播 频偏估计 直流分量 CMMB frequency estimation DC offset
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参考文献8

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