Telecommunications Science ›› 2015, Vol. 31 ›› Issue (11): 60-66.doi: 10.11959/j.issn.1000-0801.2015305

• research and development • Previous Articles     Next Articles

A Spread Spectrum Sequence for MC-CDMA System

Zhicheng Zhang,Xiaona Huang,Li Xiong   

  1. College of Physics and Electromechanical Engineering,He Xi University,Zhangye 734000,China
  • Online:2015-11-20 Published:2015-12-14

Abstract:

The MC-CDMA system takes the advantages of the OFDM system and the CDMA system.The MC-CDMA system is a kind of wireless communication aroused an ongoing and growing research interests,which has the characteristics of high bit transmission rate,high bandwidth efficiency,anti-jamming,and a large system capacity.Since the MC-CDMA system includes the multi-carrier modulation,it is difficult to design a spread spectrum sequence performing not only a high level of self-correlation and cross-correlation but also a low peak-to-average power ratio in the MC-CDMA system.To solve this problem,a spread spectrum sequence which was modulated by Golay code and m sequence was proposed.The spread spectrum sequence proposed owned a good performance in self-correlation,cross-correlation and peak-to-average power ratio.The simulation results show the effectiveness and the superiority of the proposed spread spectrum sequence.

Key words: MC-CDMA, spread spectrum sequence, Golay code, m sequence

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