| 一种QAM载波相位盲识别算法的研究与实现 |
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| 引用本文： | 李和. 一种QAM载波相位盲识别算法的研究与实现[J]. 电测与仪表, 2009, 46(8) |
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| 作者姓名： | 李和 |
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| 作者单位： | 桂林电子科技大学,信息科技学院,广西,桂林,541004 |
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| 摘 要： | 载波相位同步是全数字QAM接收机的关键技术之一,本文首先介绍了一种新的基于最大似然估计的载波相位盲识别算法,然后用Matlab语言对该算法进行了仿真研究,最后用Verilog HDL语言实现了载波相位同步模块的FPGA设计.对于包含差分编、译码的QAM系统,利用该算法不需专门设计同步头即可为正确解调提供稳定可靠的载波相位同步信息,并且该算法省去了FFT变换,只在时域处理,结构简单,方便用FPGA实现.经实际验证,该算法已成功应用在SDH数字微波通信系统的64QAM解调器中.
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| 关 键 词： | 载波相位同步 盲识别算法 |
Study and Implementation of a QAM Carrier Phase Blind Acquisition Algorithm |
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| LI He. Study and Implementation of a QAM Carrier Phase Blind Acquisition Algorithm[J]. Electrical Measurement & Instrumentation, 2009, 46(8) |
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| Authors: | LI He |
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| Affiliation: | LI He(Information Technology School of Guilin University of Electronic Technology,Guilin 541004,Guangxi,China) |
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| Abstract: | Carrier phase synchronization is one of the key techniques for all digital QAM receiver.First,this paper introduced a new carrier phase blind acquisition algorithm based on maximum likelihood estimate.Then,simulated and studied the algorithm used Matlab language.At last,it realized the FPGA designing of carrier phase synchronization module based on Verilog HDL.For a QAM system embracing differential coding procedure,this algorithm is capable of applying stable optimal carrier phase synchronization informati... |
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| Keywords: | Madab Verilog HDL |
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