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π/4-QPSK载波同步算法改进及数字化实现

An Improved Algorithm for π/4-QPSK Carrier Synchronization and Its Digital Implementation
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摘要 基于高速突发通信对同步时间的要求以及实际工程实现的需要,对数据辅助式载波同步算法进行了改进。仿真表明当信噪比不小于8时,该算法仅需少量符号就能快速捕获初始相位,并解决了载波跟踪环的相位模糊问题。通过相位旋转,将变换成信号,采用通用环进行载波相位跟踪,硬件实现简单,适合于无线高速突发通信系统。 A data aided carrier synchronization algorithm for π/4 - QPSK in burst mode is studied in this paper. The improved algorithm is based on the demand of high rate burst mode and facility. Computer simulation and FPGA implement results show that the proposed solution just spends 10 symbols for initial phase acquisition, without phase ambiguity, easy for implementation and suitable for wireless burst communication systems.
作者 冯文江 朱长根 付晓蕾
机构地区 重庆大学通信工程学院
出处 《无线电工程》 2007年第4期51-53,共3页 Radio Engineering
基金 国家自然科学基金资助(60672097)。
关键词 Π/4-QPSK 相位捕获 相位跟踪 数字化实现 π/4- QPSK phase acquisition carrier tracking digital implementation
分类号 TN911.3 [电子电信—通信与信息系统]
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参考文献5

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二级参考文献8

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无线电工程
2007年 第4期

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