A modified carrier frequency estimator for DVB-S2 system

被引：0
|
作者：
Wu, Nan [1 ]
Wang, Hua [1 ]
Kuang, Jingming [1 ]
Fei, Zesong [1 ]
Fan, Guangrong [1 ]
机构：
[1] Beijing Inst Technol, Modern Comm Lab, Dept E E, Beijing 100081, Peoples R China
来源：
2007 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-9 | 2007年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A Modified M&M frequency estimation algorithm for DVB-S2 system is proposed in this paper. This estimator provides a larger estimation range compared to the well known Fitz and L&R methods and achieves CRB in the whole SNR operation range of DVB-S2, with a little increase in computational complexity. The enlarged estimation range will reduce the acquisition time of the coarse frequency synchronizer in a two-step carrier frequency recovery scheme. Minimum accumulation lengths to achieve a certain RMS frequency estimation error for the L&R and Modified M&M estimator at different SNR are presented. A variable accumulation length scheme based on SNR estimation or coding/modulation scheme employed in system is proposed to minimize the acquisition time in the fine frequency recovery.
引用
收藏
页码：2428 / 2432
页数：5
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