适用QAM信号的载波同步与均衡联合算法研究

J4 ›› 2013, Vol. 35 ›› Issue (2): 179-183.

适用QAM信号的载波同步与均衡联合算法研究

赵秋明，谭大伦，谢俊华

（桂林电子科技大学信息与通信学院，广西桂林 541000）

收稿日期:2011-12-26 修回日期:2012-03-05 出版日期:2013-02-25 发布日期:2013-02-25
基金资助:
广西无线带宽通信与信号处理重点实验室主任基金“基于软件无线电的硬件平台的设计”（10913）

Joint algorithm of carrier synchronization and equalization for QAM signal

ZHAO Qiuming,TAN Dalun,XIE Junhua

(College of Communication and Information，Guilin University of Electronic Technology，Guilin 541000，China)

Received:2011-12-26 Revised:2012-03-05 Online:2013-02-25 Published:2013-02-25

摘要/Abstract

摘要：

载波同步和均衡是正交幅度调制（QAM）解调器中的两个重要组成部分。提出了一种适应于QAM信号的通用载波恢复环与自适应均衡的联合结构算法，该算法能够快速地对载波频率、载波相位进行高精度跟踪锁定。在System Generator中对其建模与仿真，仿真结果显示其误码率达到百万分之一，表明算法的性能稳定。通过对算法的简化，减少了硬件资源，同时也保证了接收机的实际性能要求。

关键词: 16QAM, LMS, 自适应均衡, 通用载波恢复环

Abstract:

Carrier synchronization and equalization are two important parts in QAM demodulator. This paper propose a joint structure algorithm of universal carrier recovery loop and adaptive equalization which is suitable for the signal of QAM. The algorithm realizes a high accuracy synchronous tracking and locking to the carrier frequency and phase. Modeling and simulating the design in System Generator and the result of simulation indicates that the BER is one in a million, and the joint algorithm has better stability and good tracking capability. Through simplifying the algorithm the hardware resource is decreased and can meet the realistic requirements of receiver at the same time.

Key words: 16QAM;LMS;adaptive equalization;universal carrier recovery loop

赵秋明，谭大伦，谢俊华. 适用QAM信号的载波同步与均衡联合算法研究[J]. J4, 2013, 35(2): 179-183.

ZHAO Qiuming,TAN Dalun,XIE Junhua. Joint algorithm of carrier synchronization and equalization for QAM signal[J]. J4, 2013, 35(2): 179-183.

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