面向多速率码分多址可见光通信系统的新码集研究
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Journal:通信学报 Abstract:针对无线通信多址接入系统中不同数据流量需求和VLC特点,构造了一种适用于多速率码分多址可见光通信系统的正交可变扩频因子–零互相关(OVSF-ZCC)码集,该码集包含可变长度的单极性扩频序列,序列之间保持零互相关特性。假设LED光源辐射为朗伯分布,进一步搭建了应用提出的OVSF-ZCC码集的多速率码分多址可见光通信系统模型,并在此基础上分析了码集构造参数、传输速率、传输距离等参数对该系统性能的影响。结果表明,所构造的OVSF-ZCC码集能够有效降低系统多址干扰(MAI)的影响,并支持多址接入系统中不同用户的多种速率传输。 Volume:41 Issue:12 Translation or Not:no Date of Publication:2020-09-20 Included Journals:EI -
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