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Volume 27 Issue 11
Nov.  2005
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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.

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

  • Received Date: 2004-04-27
  • Rev Recd Date: 2004-11-17
  • Publish Date: 2005-11-19
  • This paper proposes a novel M-ary spread spectrum receiver scheme based on time-frequency transform domain. At the transmitter of the system, the M spreading codes of each user are generated by circularly shifting the prototype spreading code. At the receiver, a time-frequency transform domain orthogonal matched-filter is employed to noncoherently despread and demodulate the received signals. The proposed scheme reduces computation and spreading codes selection difficulty of M-ary spread spectrum system remarkably. The BER performances of the receiver for single user and multiuser are analyzed, and the computations for three kinds of M-ary despreading methods are compared. The results show that the proposed scheme has better BER performance and lower computation complexity than of traditional M-ary systems.
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