无线通信  >> Vol. 3 No. 1 (February 2013)

一种载波频率未知的扩频序列盲估计算法
Blind Estimation of M-Sequence in CDMA Signal without the Information of Carry Frequency

DOI: 10.12677/HJWC.2013.31004, PDF, HTML, 下载: 2,850  浏览: 8,150  科研立项经费支持

作者: 颜海梅, 沈雷, 王泽辉, 盛迪:杭州电子科级大学通信工程学院

关键词: 扩频序列盲估计载波频率估计主分量分析Blind Estimation of M-Sequence;Carry Frequency Estimation; PCA

摘要: 提出一种载波频率未知情况下,利用主分量分析法盲估计直接扩频序列的算法。算法把接收到的信号投影到扩频码所在向量域,通过搜索投影向量的特征值,可以在没有载波频率、信道先验信息的情况下,估计得到扩频序列和载波频率。理论和仿真结果表明了算法的有效性。
Abstract: This paper propose a new method to blind estimation m-sequence in DS-CDMA signals without the informa- tion of carry frequency. A new model was built and the m-sequence can be blindly estimated by PCA in this model. The carry frequency can also be got. Analytical and simulated results show that the proposed method has a good perfor- mance.

文章引用: 颜海梅, 沈雷, 王泽辉, 盛迪. 一种载波频率未知的扩频序列盲估计算法[J]. 无线通信, 2013, 3(1): 18-21. http://dx.doi.org/10.12677/HJWC.2013.31004

参考文献

[1] G. Berel, C. Bouder. Blind estimation of the pseudo-random sequence of a direct sequence spread spectrum signals. MILCOM 2000. 21st Century Military Communications Con- ference Proceedings, 2000, 2: 967-970.
[2] 詹亚锋, 曹志钢, 马正. DSSS信号的扩频序列盲估计[J]. 电子与信息学报, 2005, 27(2): 169-172.
[3] 沈雷. 多径异步信道中基于独立分量分析的DS-CDMA直扩序列盲检测[J]. 浙大学报工学版, 2007, 41(11): 1828-1818.
[4] 黄春琳, 刘征, 姜文利. 基于循环谱包络的扩频直扩信号的码片时宽, 载频, 幅度估计[J]. 电子学报, 2002, 9:1353-1356
[5] L. Mazet, Ph. Loubaton. Cyclic correlation based symbol rate estimation. Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers, 1999, 2: 1008- 1012.
[6] 张天骐, 周正中. 直扩信号伪码周期的谱检测[J]. 电波科学学报, 2001, 16: 518-521.