| 用于CDMA的四相混沌扩频序列 |
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| 引用本文： | 凌聪,孙松庚. 用于CDMA的四相混沌扩频序列[J]. 通信学报, 1998, 19(3): 40-44 |
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| 作者姓名： | 凌聪 孙松庚 |
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| 作者单位： | 通信工程学院,南京,210016 |
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| 基金项目： | 江苏省自然科学基金,东南大学移动通信国家重点实验室资助 |
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| 摘 要： | 本文由混沌映射产生用于直扩码分多址（ＤＳ／ＣＤＭＡ）系统的四相扩频序列，证明了周期为Ｎ的此类扩频序列的四种广义奇相关均服从均方值为Ｎ的瑞利分布。混沌四相序列的相关峰值较混沌二相序列有显著的下降，多址性能与传统四相扩频序列相同。
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| 关 键 词： | 混沌 四相扩频序列 广义奇相关 |
4-Phase Spreading Sequences by Chaotic Maps for CDMA |
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| Ling Cong,Sun Songgeng. 4-Phase Spreading Sequences by Chaotic Maps for CDMA[J]. Journal on Communications, 1998, 19(3): 40-44 |
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| Authors: | Ling Cong Sun Songgeng |
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| Abstract: | In this paper, we generate 4 phase sequences for DS/CDMA by chaotic maps. The generalized odd correlations of such sequences of length N are Rayleigh distributed, with mean square correlation N . The peak correlation of chaotic 4 phase sequences is reduced considerably in comparison with chaotic biphase sequences. The performance of chaotic spreading sequences is shown to be identical to conventional sequences in CDMA systems. |
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| Keywords: | chaos 4 phase spreading sequence generalized odd correlation |
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