全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

一种低SNR下APSK载波相位盲同步方法

Keywords: MMSE鉴相器,载波相位同步,同步环路

Full-Text   Cite this paper   Add to My Lib

Abstract:

提出了一种工作在低信噪比(SNR)条件下,由最小均方误差(MMSE)鉴相和数字二阶闭环组成的幅相键控(APSK)载波相位盲同步方法.给出了载波相位同步环路的参数、采样速率匹配方法及其定点优化实现方案.与盲同步中常见的判决引导算法相比,MMSE鉴相算法无需符号硬判决,对符号误判不敏感,因此具有更大的鉴相范围,降低了相位模糊的重数;运算量虽较大,但可以采用查表法克服这一缺点.

References

[1]  European Telecommunications Standards Institute. ETSI EN 302 307 digital video broadcasting(DVB): second generation framing structure, channel coding and modulation systems for broadcasting, interactive services, news gathering and other broadband satellite applications[S]. Sophia Antipohs Cedes, France: ETSI, 2005.
[2]  Park J W, Sunwoo M H, Kim P S, et al. An efficient data aided initial frequency synchronizer for DVB S2[C]∥Proceedings of 2007 IEEE Workshop on Signal Processing Systems (SiPS). Shanghai,China: IEEE, 2007:645-650.
[3]  Mengali U, Moerlli M. Data aided frequency estimation for burst digital transmission[J]. IEEE Transactions on Communications, 1997,45(1):23-45.
[4]  Fitz M P, Lindsey W C. Decision directed burst mode carrier synchronization techniques[J]. IEEE Transactions on Communications, 1992,40(10):1644-1653.
[5]  Proakis J G.数字通信[M].4版.北京:电子工业出版社,2003.Proakis J G. Digital communications[M]. 4th Ed. Beijing: Publishing House of Electronics Industry, 2003. (in Chinese)
[6]  Kay S M.统计信号处理基础——估计与检测理论[M].北京:电子工业出版社,2006.Kay S M.Fundamentals of statistical signal processing—estimation and detection theory[M]. Beijing: Publishing House of Electronics Industry, 2006. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133