Correlation Analysis for Quasi-Orthogonal Codes Based on M-sequences

摘要：

This paper discusses the construction of quasiorthogonal codes based on Gold or Kasami sets, and orthogonal code sets with variable length based on M-sequences for CDMA systems. Quasi-orthogonal codes are used to complement orthogonal codes. Orthogonal sets from variable length Msequences are employed to ease the OVSF code blocking.Correlation performance is assessed for the proposed code sets.Numerical results show that the cross correlations are relatively low and, hence, code limitation and code blocking can be reasonably alleviated if the proposed code sets are used.

关键词： quasi-orthogonal codes code blocking Msequence, cross correlation, CDMA

作者: WANG Zhoujing XU Jun

作者单位: Department of Automation Xiamen University Xiamen, Fujian 361005,China Dept.of Electrical and Computer Engineering University of Waterloo Waterloo, Ontario N2L 3G1,Canada

会议类型: 国际会议

会议名称: 第二届国际计算机新科技与教育学术会议(Proceedings of the Second International Conference on Computer Science & Education ICCSE2007)

会议地点: 武汉

会议语种:英文

页码: 455-459

在线出版日期: 2007-07-25（万方平台首次上网日期，不代表论文的发表时间）