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基于矩陣填充和三階相關(guān)的長(zhǎng)短碼DS-CDMA信號(hào)多偽碼盲估計(jì)

趙知?jiǎng)?/a>,  李淼 尚俊娜

趙知?jiǎng)? 李淼, 尚俊娜. 基于矩陣填充和三階相關(guān)的長(zhǎng)短碼DS-CDMA信號(hào)多偽碼盲估計(jì)[J]. 電子與信息學(xué)報(bào), 2016, 38(7): 1788-1793. doi: 10.11999/JEIT151087
引用本文: 趙知?jiǎng)? 李淼, 尚俊娜. 基于矩陣填充和三階相關(guān)的長(zhǎng)短碼DS-CDMA信號(hào)多偽碼盲估計(jì)[J]. 電子與信息學(xué)報(bào), 2016, 38(7): 1788-1793. doi: 10.11999/JEIT151087
ZHAO Zhijin, LI Miao, 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
Citation: ZHAO Zhijin, LI Miao, 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

基于矩陣填充和三階相關(guān)的長(zhǎng)短碼DS-CDMA信號(hào)多偽碼盲估計(jì)

doi: 10.11999/JEIT151087
基金項(xiàng)目: 

國(guó)家自然科學(xué)基金(61571172)

Blind Estimation of LSC-DS-CDMA Signal Based on Matrix Completion and Triple Correlation

Funds: 

The National Natural Science Foundation of China (61571172)

  • 摘要: 由于長(zhǎng)短碼直擴(kuò)碼分多址(LSC-DS-CDMA)信號(hào)包含了多個(gè)用戶的長(zhǎng)碼和短碼,已有的直擴(kuò)碼分多址信號(hào)的盲偽碼估計(jì)方法不再適用。為此該文提出一種基于矩陣填充和三階相關(guān)的偽碼估計(jì)方法。首先從理論上將結(jié)構(gòu)復(fù)雜的LSC-DS-CDMA信號(hào)構(gòu)建為多用戶短碼擴(kuò)頻的缺失矩陣模型,將復(fù)合碼矩陣估計(jì)建模為盲源信號(hào)分離問題;然后將矩陣填充理論應(yīng)用于復(fù)合碼矩陣估計(jì),提出基于奇異值閾值算法和快速獨(dú)立成分分析算法的各用戶復(fù)合碼序列估計(jì)方法;最后利用m序列的移位相加性特性,提出延遲三階相關(guān)算法,從各用戶復(fù)合碼序列中估計(jì)其包含的長(zhǎng)短偽碼序列。仿真表明,當(dāng)信噪比高于-2 dB時(shí),該文算法的長(zhǎng)短偽碼估計(jì)平均誤碼率低于0.1%。
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出版歷程
  • 收稿日期:  2015-09-23
  • 修回日期:  2016-02-26
  • 刊出日期:  2016-07-19

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