| π/4-QPSK载波同步算法改进及数字化实现 |
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| 引用本文： | 冯文江,朱长根,付晓蕾. π/4-QPSK载波同步算法改进及数字化实现[J]. 无线电工程, 2007, 37(4): 51-53 |
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| 作者姓名： | 冯文江 朱长根 付晓蕾 |
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| 作者单位： | 重庆大学,通信工程学院,重庆,400044 |
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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。
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| 关 键 词： | π/4-QPSK 相位捕获 相位跟踪 数字化实现 |
| 文章编号： | 1003-3106（2007）04-0051-03 |
| 修稿时间： | 2006-11-21 |
An Improved Algorithm for π/4-QPSK Carrier Synchronization and Its Digital Implementation |
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| FENG Wen-jiang,ZHU Chang-gen,FU Xiao-lei. An Improved Algorithm for π/4-QPSK Carrier Synchronization and Its Digital Implementation[J]. Radio Engineering of China, 2007, 37(4): 51-53 |
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| Authors: | FENG Wen-jiang ZHU Chang-gen FU Xiao-lei |
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| Affiliation: | College of Communication Engineering, Chongqing University, Chongqing 400044, China |
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| Abstract: | 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. |
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| Keywords: | π/4-QPSK phase acquisition carrier tracking digital implementation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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