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基于張量分解和多項(xiàng)式庫(kù)搜索的多天線NPLC-DS-CDMA偽碼序列估計(jì)

張?zhí)祢U,  喻盛琪,  張?zhí)?/a>,  葛宛營(yíng)

張?zhí)祢U, 喻盛琪, 張?zhí)? 葛宛營(yíng). 基于張量分解和多項(xiàng)式庫(kù)搜索的多天線NPLC-DS-CDMA偽碼序列估計(jì)[J]. 電子與信息學(xué)報(bào), 2020, 42(10): 2429-2436. doi: 10.11999/JEIT190406
引用本文: 張?zhí)祢U, 喻盛琪, 張?zhí)? 葛宛營(yíng). 基于張量分解和多項(xiàng)式庫(kù)搜索的多天線NPLC-DS-CDMA偽碼序列估計(jì)[J]. 電子與信息學(xué)報(bào), 2020, 42(10): 2429-2436. doi: 10.11999/JEIT190406
Tianqi ZHANG, Shengqi YU, Tian ZHANG, Wanying GE. Estimation of the Pseudo Noise Sequence for Multi-Antenna NPLC-DS-CDMA Signals Based on Tensor Decomposition and Polynomial Library Search[J]. Journal of Electronics & Information Technology, 2020, 42(10): 2429-2436. doi: 10.11999/JEIT190406
Citation: Tianqi ZHANG, Shengqi YU, Tian ZHANG, Wanying GE. Estimation of the Pseudo Noise Sequence for Multi-Antenna NPLC-DS-CDMA Signals Based on Tensor Decomposition and Polynomial Library Search[J]. Journal of Electronics & Information Technology, 2020, 42(10): 2429-2436. doi: 10.11999/JEIT190406

基于張量分解和多項(xiàng)式庫(kù)搜索的多天線NPLC-DS-CDMA偽碼序列估計(jì)

doi: 10.11999/JEIT190406
  • 1.

    重慶郵電大學(xué)通信與信息工程學(xué)院 重慶 400065

  • 2.

    重慶郵電大學(xué)信號(hào)與信息處理重慶市重點(diǎn)實(shí)驗(yàn)室 重慶 400065

基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61671095, 61702065, 61701067, 61771085)，信號(hào)與信息處理重慶市市級(jí)重點(diǎn)實(shí)驗(yàn)室建設(shè)項(xiàng)目(CSTC2009CA2003)，重慶市研究生科研創(chuàng)新項(xiàng)目(CYS17219)，重慶市教育委員會(huì)科研項(xiàng)目(KJ1600427, KJ1600429)
詳細(xì)信息
    作者簡(jiǎn)介:

    張?zhí)祢U：男，1971年生，博士后，教授，博士生導(dǎo)師，主要研究方向?yàn)閿U(kuò)頻信號(hào)盲處理，語(yǔ)音信號(hào)處理，神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)以及信號(hào)同步處理

    喻盛琪：男，1994年生，碩士生，研究方向?yàn)橥ㄐ判盘?hào)盲處理

    張?zhí)欤耗校?994年生，碩士生，研究方向?yàn)檎Z(yǔ)音信號(hào)處理

    葛宛營(yíng)：男，1994年生，碩士生，語(yǔ)音增強(qiáng)與盲分離

    通訊作者:

    喻盛琪　shengqi_yu@qq.com

  • 中圖分類(lèi)號(hào): TN911.7

Estimation of the Pseudo Noise Sequence for Multi-Antenna NPLC-DS-CDMA Signals Based on Tensor Decomposition and Polynomial Library Search

  • 1.

    School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

  • 2.

    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, 61702065, 61701067, 61771085), The Project of Key Laboratory of Signal and Information Processing of Chongqing (CSTC2009CA2003), The Chongqing Graduate Research and Innovation Project (CYS17219), The Research Project of Chongqing Educational Commission (KJ1600427, KJ1600429)
  • 摘要: 針對(duì)低信噪比下非周期長(zhǎng)碼直接序列碼分多址(NPLC-DS-CDMA)信號(hào)偽碼序列估計(jì)問(wèn)題，該文提出一種基于張量分解和多項(xiàng)式庫(kù)搜索的多天線估計(jì)方法。該方法首先對(duì)接收信號(hào)建模為3階張量模型并根據(jù)擴(kuò)頻增益分割為多個(gè)子張量，然后利用交替最小二乘投影(ALSP)算法對(duì)子張量進(jìn)行CP分解得到偽碼片段因子矩陣和接收增益因子矩陣，利用接收增益矩陣互相關(guān)性和旁瓣能量檢測(cè)對(duì)偽碼片段組合序列篩選得到每個(gè)用戶(hù)的偽碼序列，最后利用多項(xiàng)式庫(kù)搜索的方法識(shí)別出偽碼序列的生成多項(xiàng)式，進(jìn)一步提高偽碼序列估計(jì)的正確率。仿真結(jié)果表明，所提方法能夠?qū)崿F(xiàn)對(duì)NPLC-DS-CDMA信號(hào)偽碼序列的有效估計(jì)。
    Abstract: To deal with the problem of estimation of the pseudo noise sequence for Non-Periodic Long Code Direct Sequence Code Division Multiple Access (NPLC-DS-CDMA) signals under low signal-to-noise ratio, a method using multi-antenna based on tensor decomposition and polynomial library search is proposed. Firstly, the received signals are modeled as a third-order tensor model and the tensor is divided into multiple sub-tensors according to the spreading gain. Secondly, the pseudo noise code fragment factor matrixs and the receiver gain factor matrixs are obtained from the sub-tensors by Canonical Polyadic (CP) decomposition which uses the Alternating Least Squares Projection (ALSP) algorithm, and then the pseudo noise sequence of each user is obtained by selecting pseudo noise code fragment combination sequence according to the cross-correlation of the receiver gain factor matrixs and sidelobe energy detection. Finally, the polynomial library search method is applied to identifying the generator polynomial of the pseudo noise sequence in order to further improve the accuracy of the pseudo code sequence estimation. The simulation results show that the proposed method can effectively estimate the pseudo noise sequence of the multi-antenna NPLC-DS-CDMA signals.
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  • 圖  1  同步NPLC-DS-CDMA信號(hào)多天線接收模型

    圖  2  3階張量示意圖

    圖  3  張量CP分解示意圖

    圖  4  K=6下不同用戶(hù)數(shù)的偽碼序列估計(jì)性能

    圖  5  K=10下不同用戶(hù)數(shù)的偽碼序列估計(jì)性能

    圖  6  不同L和G下的偽碼序列估計(jì)性能

    圖  7  本文算法同文獻(xiàn)[5]和文獻(xiàn)[9]算法性能對(duì)比

    圖  8  多項(xiàng)式庫(kù)搜索對(duì)偽碼序列估計(jì)性能提升

    圖  9  本文算法同文獻(xiàn)[9]算法迭代次數(shù)對(duì)比

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  • 收稿日期:  2019-06-05
  • 修回日期:  2019-12-17
  • 網(wǎng)絡(luò)出版日期:  2020-07-17
  • 刊出日期:  2020-10-13

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