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提出了序列代数和相关特性的概念,采用此概念对Gold序列的代数和序列相关性进行了分析,并给出了一种Gold序列的优选方法.针对Gold代数和序列非零时延处互相关函数具有多值且峰值较大的特点,从减小序列异步时序列代数和互相关峰值干扰的角度出发,优选出具有较小代数和互相关特征峰值序列.结果表明,在并行组合扩频系统序列异步的高白信道下,采用优选Gold序列集的系统误码率要低于未优选Gold序列集的系统误码率.
This paper proposes the concept of sequence algebra and related features, and uses the concept to analyze the algebra and sequence correlation of Gold sequence, and gives a preferred method of Gold sequence.For Gold algebra and sequence nonzero time delay cross-correlation The function has the characteristics of multi-value and large peak value. From the point of view of reducing the peak value of asynchronous sequence algebra and cross-correlation of sequence, the peak sequences with smaller algebra and cross-correlation are optimized. The results show that in parallel combination spread spectrum system Under asynchronous white channel, the systematic bit error rate using the preferred Gold sequence set is lower than that of the non-preferred Gold sequence set.