| 同步头辅助的MPSK信号高精度频偏估计 |
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| 引用本文： | 唐筠.同步头辅助的MPSK信号高精度频偏估计[J].微型机与应用,2011,30(20):65-67. |
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| 作者姓名： | 唐筠 |
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| 作者单位： | 中国移动通信集团四川I有限公司,四川成都,611731 |
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| 摘 要： | 针对传统MPSK信号载波频偏估计方法精度差的问题,提出了一种MPSK信号的高精度载波频偏估计算法,该算法采用同步头辅助,在数字传输系统中非常易于实现。将该算法与早期的几种频偏估计算法在性能上进行了对比,对比结果显示,算法估计精度很高,在信噪比低至0dB的情况下可接近于Cramer-Rao界。
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| 关 键 词： | MPSK 同步头 频偏估计 Cramer-Rao界 |
Synchronous head-aided frequency offset estimate for MPSK signal |
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| Tang Jun ,Chengdu ,China.Synchronous head-aided frequency offset estimate for MPSK signal[J].Microcomputer & its Applications,2011,30(20):65-67. |
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| Authors: | Tang Jun Chengdu China |
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| Affiliation: | Tang Jun (China Mobile Communications Group Co(Sichuan Branch),Chengdu 611731,China) |
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| Abstract: | We propose a new algorithm for carrier frequency estimation in M-ary phase shift keying（MPSK） transmissions. The algorithm is data-aided and clock-aided and has a feedforward structure that is easy to implement in digital form. Comparisons with earlier methods are discussed,the results indicate that ist estimation accuracy is high and it can close to the Cramer-Rao bound（CRB） for a signal-to-noise ratio（SNR）as low as 0 dB. |
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| Keywords: | MPSK synchronous head frequency offset estimate Cramer-Rao bound |
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