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窄帶干擾條件下含有未知載頻的直擴(kuò)信號的偽碼序列估計(jì)

沈斌 王建新

沈斌, 王建新. 窄帶干擾條件下含有未知載頻的直擴(kuò)信號的偽碼序列估計(jì)[J]. 電子與信息學(xué)報(bào), 2015, 37(7): 1556-1561. doi: 10.11999/JEIT141322
引用本文: 沈斌, 王建新. 窄帶干擾條件下含有未知載頻的直擴(kuò)信號的偽碼序列估計(jì)[J]. 電子與信息學(xué)報(bào), 2015, 37(7): 1556-1561. doi: 10.11999/JEIT141322
Shen Bin, Wang Jian-xin. Estimation of PN Sequence in DSSS Signals with Unknown Carrier Frequency under Narrow Band Interferences[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1556-1561. doi: 10.11999/JEIT141322
Citation: Shen Bin, Wang Jian-xin. Estimation of PN Sequence in DSSS Signals with Unknown Carrier Frequency under Narrow Band Interferences[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1556-1561. doi: 10.11999/JEIT141322

窄帶干擾條件下含有未知載頻的直擴(kuò)信號的偽碼序列估計(jì)

doi: 10.11999/JEIT141322

Estimation of PN Sequence in DSSS Signals with Unknown Carrier Frequency under Narrow Band Interferences

  • 摘要: 為了解決窄帶干擾條件下含有未知載頻的直擴(kuò)信號的偽碼序列的估計(jì)問題,該文在已知碼片速率和偽碼周期的前提下,提出一種結(jié)合矩陣特征分解和線性調(diào)頻Z變換的偽碼序列盲估計(jì)算法。該方法對接收信號分段獲得觀察向量,并對觀察向量的相關(guān)矩陣進(jìn)行特征分解,最后應(yīng)用改進(jìn)的最小描述長度(MDL)準(zhǔn)則和線性調(diào)頻Z變換(CZT)對特征向量進(jìn)行處理,可以估計(jì)出窄帶干擾信號,同時(shí)還可以估計(jì)出信號的載頻和偽碼序列。仿真實(shí)驗(yàn)給出了不同干擾信號和不同偽碼序列長度時(shí)算法的性能曲線,理論分析和仿真結(jié)果都表明了該方法能有效地工作在較低的信噪比下。
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出版歷程
  • 收稿日期:  2014-10-15
  • 修回日期:  2015-03-19
  • 刊出日期:  2015-07-19

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