A wideband carrier-recovery system for multilevel QAM signals

被引：0
|
作者：
Mirabbasi, S [1 ]
Gazor, S [1 ]
Martin, K [1 ]
机构：
[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
来源：
ISCAS 2000: IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS - PROCEEDINGS, VOL IV: EMERGING TECHNOLOGIES FOR THE 21ST CENTURY | 2000年
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A decision-directed carrier-recovery technique for coherent demodulation of quadrature amplitude modulated (QAM) signals is proposed. This system adaptively tracks both the carrier frequency and phase of the received QAM signal's modulated carrier. The acquisition time of the proposed system is shown to be faster than that of conventional carrier-recovery schemes, especially when the initial carrier-frequency offset is relatively large, i.e. beyond a small fraction of the symbol rate. Also, the proposed method has a wider acquisition range compared to conventional techniques.
引用
收藏
页码：661 / 664
页数：4
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