一级黄色片免费播放|中国黄色视频播放片|日本三级a|可以直接考播黄片影视免费一级毛片

高級搜索

留言板

尊敬的讀者、作者、審稿人, 關于本刊的投稿、審稿、編輯和出版的任何問題, 您可以本頁添加留言。我們將盡快給您答復。謝謝您的支持!

姓名
郵箱
手機號碼
標題
留言內(nèi)容
驗證碼

同/異步短碼DS-CDMA信號偽碼序列及信息序列盲估計

周楊,  張?zhí)祢U

周楊, 張?zhí)祢U. 同/異步短碼DS-CDMA信號偽碼序列及信息序列盲估計[J]. 電子與信息學報, 2019, 41(7): 1540-1547. doi: 10.11999/JEIT180812
引用本文: 周楊, 張?zhí)祢U. 同/異步短碼DS-CDMA信號偽碼序列及信息序列盲估計[J]. 電子與信息學報, 2019, 41(7): 1540-1547. doi: 10.11999/JEIT180812
Yang ZHOU, Tianqi ZHANG. Blind Estimation of the Pseudo Noise Sequence and Information Sequence for Short Code Synchronous and Asynchronous DS-CDMA Signal[J]. Journal of Electronics & Information Technology, 2019, 41(7): 1540-1547. doi: 10.11999/JEIT180812
Citation: Yang ZHOU, Tianqi ZHANG. Blind Estimation of the Pseudo Noise Sequence and Information Sequence for Short Code Synchronous and Asynchronous DS-CDMA Signal[J]. Journal of Electronics & Information Technology, 2019, 41(7): 1540-1547. doi: 10.11999/JEIT180812

同/異步短碼DS-CDMA信號偽碼序列及信息序列盲估計

doi: 10.11999/JEIT180812

  • 重慶郵電大學信號與信息處理重慶市重點實驗室? ?重慶? ?400065

基金項目: 國家自然科學基金(61671095, 61371164)，信號與信息處理重慶市市級重點實驗室建設項目(CSTC2009CA2003)，重慶市杰出青年基金(CSTC2011jjjq40002)
詳細信息
    作者簡介:

    周楊：男，1989年生，博士，研究方向為通信信號的盲處理

    張?zhí)祢U：男，1971年生，博士后，教授，研究方向為通信信號的調制解調、盲處理、語音信號處理、神經(jīng)網(wǎng)絡實現(xiàn)以及FPGA實現(xiàn)

    通訊作者:

    周楊　zhouyang@cqupt.edu.cn

  • 中圖分類號: TN911.7

Blind Estimation of the Pseudo Noise Sequence and Information Sequence for Short Code Synchronous and Asynchronous DS-CDMA Signal

  • Chongqing Key Laboratory of Signal and Information Processing, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Funds: The National Natural Science Foundation of China (61671095, 61371164), The Project of Key Laboratory of Signal and Information Processing of Chongqing (CSTC2009CA2003), The Chongqing Distinguished Youth Foundation (CSTC2011jjjq40002)
  • 摘要: 針對傳統(tǒng)單通道異步直接序列碼分多址(DS-CDMA)信號信息序列及偽碼序列(PN)難以估計的問題，該文提出一種基于平行因子(PARAFAC)的多通道盲估計方法。該方法首先將信號建模為多通道接收模型，然后將觀測數(shù)據(jù)矩陣等效為平行因子模型，最后使用迭代最小二乘算法對平行因子進行低秩分解，進一步完成對DS-CDMA信號各用戶的信息序列及偽碼序列進行估計。仿真實驗表明，該方法不僅能有效地對同步、異步短碼DS-CDMA信號的偽碼序列及信息序列進行估計，而且能在通道數(shù)為6、信噪比(SNR)為–10 dB的條件下，實現(xiàn)10個用戶偽碼序列的有效估計。
    Abstract: For the problem of Direct Sequence-Code Division Multiple Access (DS-CDMA) signal in traditional asynchronous single-channel, including blind estimation of the Pseudo-Noise (PN) sequence and information sequence, a method using multi-channel synchronous and asynchronous based on PARAllel FACtor (PARAFAC) is proposed. Firstly, the signal is modeled as a multi-channel receiving model, then the observed data matrix is equivalent to a factor model. Finally, the iterative least squares algorithm is applied to decomposing the parallel factor, and the information sequence and PN sequences of DS-CDMA signals are further estimated. The simulation results show that the proposed method can effectively estimate the PN sequence and information sequence of the short code DS-CDMA signal, and the estimation of 6 user PN sequences can be realized under the condition that the number of channels is 10 and the Signal-to-Noise Ratio (SNR) is –10 dB.
    • HTML全文

  • 圖  1  短碼DS-CDMA信號多通道接收模型

    圖  2  3維矩陣低秩分解示意圖

    圖  3  同步短碼DS-CDMA信號偽碼序列真實值與估計值對比

    圖  4  異步短碼DS-CDMA信號偽碼序列估計值

    圖  5  異步短碼DS-CDMA信號偽碼序列真實值與估計值對比

    圖  6  不同R值下異步短碼DS-CDMA信號偽碼序列估計的性能曲線

    圖  7  異步時本文方法與文獻[9]方法對比性能曲線

    圖  8  異步時本文方法與文獻[9]方法對比性能曲線

  • 田日才, 遲永鋼. 擴頻通信[M]. 2版. 北京: 清華大學出版社, 2014: 1–5.

    TIAN Ricai and CHI Yonggang. Spread Spectrum Communication[M]. 2nd ed. Beijing: Tsinghua University Press, 2014: 1–5.
    LUO Zhongqiang and ZHU Lidong. A charrelation matrix-based blind adaptive detector for DS-CDMA Systems[J]. Sensors, 2015, 15(8): 20152–20168. doi: 10.3390/s150820152
    張?zhí)祢U, 楊強, 宋玉龍, 等. 基于相似度的直擴信號盲解擴方法[J]. 系統(tǒng)工程與電子技術, 2017, 39(7): 1451–1456. doi: 10.3969/j.issn.1001-506X.2017.07.04

    ZHANG Tianqi, YANG Qiang, SONG Yulong, et al. Similarity based blind despread method of DS-SS signal[J]. Systems Engineering and Electronics, 2017, 39(7): 1451–1456. doi: 10.3969/j.issn.1001-506X.2017.07.04
    ZHOU Liqing, LEUNG H, XU Peng, et al. The Kalman filtering blind adaptive multi-user detector based on tracking algorithm of signal subspace[J]. Information, 2015, 6(1): 3–13. doi: 10.3390/info6010003
    趙知勁, 李淼, 尚俊娜. 基于矩陣填充和三階相關的長短碼DS-CDMA信號多偽碼盲估計[J]. 電子與信息學報, 2016, 38(7): 1788–1793. doi: 10.11999/JEIT151087

    ZHAO Zhijin, LI Miao, and SHANG Junna. Blind estimation of LSC-DS-CDMA signal based on matrix completion and triple correlation[J]. Journal of Electronics &Information Technology, 2016, 38(7): 1788–1793. doi: 10.11999/JEIT151087
    GU Xiaowei, ZHAO Zhijin, and SHEN Lei. Blind estimation of pseudo-random codes in periodic long code direct sequence spread spectrum signals[J]. IET Communications, 2016, 10(11): 1273–1281. doi: 10.1049/iet-com.2015.0374
    張?zhí)祢U, 趙軍桃, 江曉磊. 基于多主分量神經(jīng)網(wǎng)絡的同步DS-CDMA偽碼盲估計[J]. 系統(tǒng)工程與電子技術, 2016, 38(11): 2638–2647. doi: 10.3969/j.issn.1001-506X.2016.11.27

    ZHANG Tianqi, ZHAO Juntao, and JIANG Xiaolei. PN code sequence blind estimate of synchronous DS-CDMA based on multi-principal component neural network[J]. Systems Engineering and Electronics, 2016, 38(11): 2638–2647. doi: 10.3969/j.issn.1001-506X.2016.11.27
    付衛(wèi)紅, 楊小牛, 劉乃安. 基于盲源分離的CDMA多用戶檢測與偽碼估計[J]. 電子學報, 2008, 36(7): 1319–1323. doi: 10.3321/j.issn:0372-2112.2008.07.013

    FU Weihong, YANG Xiaoniu, and LIU Naian. The multi-user detection and chip sequence estimation for CDMA system based on the blind source separation[J]. Acta Electronica Sinica, 2008, 36(7): 1319–1323. doi: 10.3321/j.issn:0372-2112.2008.07.013
    任嘯天, 徐暉, 黃知濤, 等. 基于Fast-ICA同、異步系統(tǒng)短碼CDMA信號擴頻序列與信息序列盲估計[J]. 電子學報, 2011, 39(12): 2726–2732.

    REN Xiaotian, XU Hui, HUANG Zhitao, et al. Fast-ICA based blind estimation of spreading and information sequences of short-code CDMA signals in synchronous and asynchronous systems[J]. Acta Electronica Sinica, 2011, 39(12): 2726–2732.
    DE LATHAUWER L and CASTAING J. Tensor-based techniques for the blind separation of DS-CDMA signals[J]. Signal Processing, 2007, 87(2): 322–336. doi: 10.1016/j.sigpro.2005.12.015
    ZHANG Tianqi, QIAN Wenrui, ZHANG Gang, et al. Parameter estimation of MC-CDMA signals based on modified cyclic autocorrelation[J]. Digital Signal Processing, 2016, 54: 46–53. doi: 10.1016/j.dsp.2016.03.007
    SIDIROPOULOS N D, GIANNAKIS G B, and BRO R. Blind PARAFAC receivers for DS-CDMA systems[J]. IEEE Transactions on Signal Processing, 2000, 48(3): 810–823. doi: 10.1109/78.824675
    HARSHMAN R A, HONG S, and LUNDY M E. Shifted factor analysis-Part I: Models and properties[J]. Journal of Chemometrics, 2003, 17(7): 363–378. doi: 10.1002/cem.808
    張?zhí)祢U, 強幸子, 馬寶澤, 等. 基于最小二乘的同步多用戶非周期長碼直擴信號擴頻序列估計[J]. 電波科學學報, 2016, 31(6): 1113–1123. doi: 10.13443/j.cjors.2016030201

    ZHANG Tianqi, QIANG Xingzi, MA Baoze, et al. Estimation of the spread spectrum sequence for synchronous multi-user aperiodic long-code DSSS signals based on least squares[J]. Chinese Journal of Radio Science, 2016, 31(6): 1113–1123. doi: 10.13443/j.cjors.2016030201
    張賢達. 矩陣分析與應用[M]. 2版. 北京: 清華大學出版社, 2013: 604–608.

    ZHANG Xianda. Matrix Analysis and Applications[M]. 2nd ed. Beijing: Tsinghua University Press, 2013: 604–608.
  • 加載中
圖(8)
計量
  • 文章訪問數(shù):  1971
  • HTML全文瀏覽量:  822
  • PDF下載量:  59
  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  2018-08-17
  • 修回日期:  2019-02-27
  • 網(wǎng)絡出版日期:  2019-03-18
  • 刊出日期:  2019-07-01

目錄

    /

    返回文章
    返回