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正交循環(huán)碼M進制擴頻接收機的研究

褚振勇 應小凡 易克初 田紅心

褚振勇, 應小凡, 易克初, 田紅心. 正交循環(huán)碼M進制擴頻接收機的研究[J]. 電子與信息學報, 2005, 27(11): 1703-1709.
引用本文: 褚振勇, 應小凡, 易克初, 田紅心. 正交循環(huán)碼M進制擴頻接收機的研究[J]. 電子與信息學報, 2005, 27(11): 1703-1709.
Chu Zhen-yong, Ying Xiao-fan, Yi Ke-chu, Tian Hong-xin. An M-ary Spread Spectrum Receiver Based on Orthogonal Cyclic Codes[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1703-1709.
Citation: Chu Zhen-yong, Ying Xiao-fan, Yi Ke-chu, Tian Hong-xin. An M-ary Spread Spectrum Receiver Based on Orthogonal Cyclic Codes[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1703-1709.

正交循環(huán)碼M進制擴頻接收機的研究

An M-ary Spread Spectrum Receiver Based on Orthogonal Cyclic Codes

  • 摘要: 該文提出了一種基于正交循環(huán)碼的M進制擴頻接收機方案,發(fā)端將一條原型擴頻碼循環(huán)移位構成M個擴頻碼,實現(xiàn)M進制擴頻,接收端利用時頻變換域正交匹配濾波器實現(xiàn)了非相干解擴解調(diào)。該方案不僅減少了需要的擴頻碼數(shù)目,而且有效地降低了接收機的計算復雜度。該文對所提出的系統(tǒng)在單用戶和多用戶條件下的誤碼性能進行了理論分析和仿真,并比較了3種M進制解擴方法的運算量。結果表明:正交循環(huán)碼M進制擴頻系統(tǒng)的計算復雜度和誤碼特性均優(yōu)于傳統(tǒng)的M進制系統(tǒng)。
  • Enge Per K, Sarwate Dilip V. Spread-spectrum multiple access performance of orthogonal codes: linear receivers [J]. IEEE. Trans. on Communications, 1987, COM-35(12): 1309-1319.[2]Volz P U, Magaa M E, Speidel J. A new block interleaver and noniterative decision feedback decoding enhance performance of IS-95 CDMA uplink or similar M-ary system [J].IEEE Trans. on Vehicular Technology.2002, 51(4):690-[3]Lee Jhong Sam, Miller L E. CDMA Systems Engineering Handbook [M]. Boston, MA, USA: Artech House Publishers, Oct. 1998, Chapter 7.[4]阮永紅, 祁玉生. DS-CDMA系統(tǒng)正交碼調(diào)制的抗多址干擾性能及其改進 [J], 通信學報, 1999, 20(8): 86-90.[5]Miller S L. An efficient channel coding scheme for direct sequence CDMA systems [A], IEEE Military Communications Conference [C], McLean, Virginia: Nov. 1991, Vol. 3: 1249-1253.[6]Yang Lie-Liang, Hanzo L. Performance analysis of coded M-ary orthogonal signaling using errors-and-erasures decoding over frequency-selective fading channels [J].IEEE J. on Selected Areas in Communications.2001, 19(2):211-221[7]Vincent K N Lau, Svetislav V Maric. Variable rate adaptive modulation for DS-CDMA [J].IEEE Trans. on Communications.1999, 47(4):577-589[8]Louay M A Jalloul, Jack M Holtzman. Performance analysis of DS/CDMA with noncoherent M-ary orthogonal modulation in multipath fading channels [J].IEEE J. on Selected Areas in Communications.1994, 12(5):862-870[9]孫文江, 張軼凡等. 卷積編碼正交序列擴頻多碼CDMA系統(tǒng)在Nakagami衰落信道的性能 [J]. 電子學報, 1999, 27(6): 100-103.[10]Bernard Sklar. Digital Communications Fundaments and Applications (Second Edition) [M]. Upper Saddle River, NJ, USA: Prentice Hall Inc., Jan. 2001, Chapter 4.
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出版歷程
  • 收稿日期:  2004-04-27
  • 修回日期:  2004-11-17
  • 刊出日期:  2005-11-19

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