| 快速哈达马变换在扩频序列并行捕捉中的应用 |
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| 引用本文： | 程云鹏,葛利嘉.快速哈达马变换在扩频序列并行捕捉中的应用[J].解放军理工大学学报,2000,1(2):5-10. |
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| 作者姓名： | 程云鹏 葛利嘉 |
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| 作者单位： | [1]解放军理工大学通信工程学院研究生 [2]重庆通信学院无线教研室 |
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| 摘 要： | 首先给出了ＢＬＤＳ－ＳＳ ＱＰＳＫ信号模型，在此模基础上介绍了最大似然估计准则下基于数据调制和非数据调制两种并行捕捉方案。特别在非数据调制下，采用ｍ序列或ＧＯＬＤ码作为扩频序列时，运用快速哈达马变换可降低并行捕捉算法运算量，文中讨论了ＦＴＨ的应用。此外，对两种并行捕捉方案性能进行了计算机仿真，结果表明：非数据调制方案优于数据调制方案。
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| 关 键 词： | 快速哈达马变换 并行捕捉 序列扩频 通信 |
Application of Fast Hadamard Transform in Parallel
Signature Code Acquisition |
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| Cheng,Yunpeng and Ge,Lijia.Application of Fast Hadamard Transform in Parallel
Signature Code Acquisition[J].Journal of PLA University of Science and Technology(Natural Science Edition),2000,1(2):5-10. |
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| Authors: | Cheng Yunpeng and Ge Lijia |
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| Institution: | Postgraduate Team 1 ICE, PLAUST, Nanjing 210016;Teaching Section of Radio Communication, Chongqing Communications Institute, Chongqing 400035 |
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| Abstract: | The model for a QPSK bandlimited DS SS system is presented firstly. With maximum likelihood estimation (MLE) criterion, two kinds of parallel acquisition algorithms, which are based on data modulation and non data modulation, are introduced respectively. Specifically, when signature code is m sequence or Gold code, the computation of non data aided algorithm can be reduced by Fast Hadamard Transform (FHT). The application of FHT is discussed and simulations are carried out, which show that the acquisition performance of non data aided algorithm outperforms data aided algorithm. |
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| Keywords: | fast hadamard transform synchronization parallel acquisition DS SS |
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