基于Chebyshev映射的四相扩频序列

Quadriphase Spread Spectrum Sequences Based on Chebyshev Map

本文基于 Ｃｈｅｂｙｓｈｅｖ 映射，提出了一种四相扩频序列的设计方法，分析了此类四相扩频序列的广义奇相关的相关分布，并就相关峰值、相关均方值等相关特性，将此类四相扩频序列与其它四相扩频序列进行了比较分析．理论分析与计算机仿真结果表明：本文设计构造的四相扩频序列，具有优良的相关特性，在 Ｃ Ｄ Ｍ Ａ 系统中具有很好的应用前景．

This paper proposes a new method for designing quadriphase spread spectrum sequences,which is based on Chebyshev Map.The correlation distribution of the generalized odd correlation of such sequences is analyzed.And the sequences is compared with other quadriphase spread spectrum sequences with respect to the correlation properties such as the correlation peak and the correlation mean square.Theoretical analyses and the results of simulation show that the quadriphase spread spectrum sequences generated by the method proposed in the paper has good correlation properties,and it will be used in CDMA in future.