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物理層網(wǎng)絡(luò)編碼的符號時鐘估計

黨小宇 李強 虞湘賓 王旭東

黨小宇, 李強, 虞湘賓, 王旭東. 物理層網(wǎng)絡(luò)編碼的符號時鐘估計[J]. 電子與信息學(xué)報, 2015, 37(7): 1569-1574. doi: 10.11999/JEIT141364
引用本文: 黨小宇, 李強, 虞湘賓, 王旭東. 物理層網(wǎng)絡(luò)編碼的符號時鐘估計[J]. 電子與信息學(xué)報, 2015, 37(7): 1569-1574. doi: 10.11999/JEIT141364
Dang Xiao-yu, Li Qiang, Yu Xiang-bin, Wang Xu-dong. Symbol Timing Estimation for Physical-layer Network Coding[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1569-1574. doi: 10.11999/JEIT141364
Citation: Dang Xiao-yu, Li Qiang, Yu Xiang-bin, Wang Xu-dong. Symbol Timing Estimation for Physical-layer Network Coding[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1569-1574. doi: 10.11999/JEIT141364

物理層網(wǎng)絡(luò)編碼的符號時鐘估計

doi: 10.11999/JEIT141364
基金項目: 

國家自然科學(xué)基金(61172078, 61201208),教育部留學(xué)回國人員科研啟動基金和中央高?;究蒲袠I(yè)務(wù)費(NS2014038)

Symbol Timing Estimation for Physical-layer Network Coding

  • 摘要: 現(xiàn)有的關(guān)于物理層網(wǎng)絡(luò)編碼(PNC)的研究多建立在時鐘已完全同步的基礎(chǔ)上,對PNC的符號時鐘同步研究較少。而實際上符號時鐘在PNC中是必不可少的。針對這一問題,該文提出一種新的基于正交訓(xùn)練序列適用于雙向中繼信道PNC的符號時鐘估計方法。該方法根據(jù)最大似然估計準(zhǔn)則,運用基于離散傅里葉變換(DFT)的插值算法來估計時鐘誤差。仿真結(jié)果表明,所提出的DFT插值算法性能優(yōu)越,在信噪比(SNR)大于10 dB的條件下,系統(tǒng)的均方誤差(MSE)性能比經(jīng)典優(yōu)選采樣點法提升1個數(shù)量級,并且非常逼近修正克拉美羅界(MCRB)。
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出版歷程
  • 收稿日期:  2014-10-27
  • 修回日期:  2015-01-06
  • 刊出日期:  2015-07-19

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