一类零相关区序列偶集的研究

在准同步CDMA系统中,使用零相关区(ZCZ)序列能够避免共信道冲突和多址干扰。通过应用序列偶理论,基于交织技术和一类最优ZCZ序列集中的移位序列,成功构造出了具有良好自相关和互相关性能的ZCZ序列偶集,不但可以生成不同的零相关区,而且使得序列偶集中的所有序列都循环移位不等价。仿真结果表明,它的性能优良,适于作准同步CDMA系统的扩频序列。

Research for a Class of ZCZ Sequence Pairs Sets

Use of zero correlation zone（ZCZ）sequences can avoid co-channel interference and multi-access interference in the quasi-synchronous CDMA systems. By adopting the theory of sequence pairs and based on interleaved technique and the shift sequence of a class of optimal ZCZ sequence sets, ZCZ sequence pairs sets are constructed with good autocorrelation function and cross-correlation function, which not only generate different ZCZ, but also the sequences obtained are eyelieally distinct. The result indicates that its performance is perfect and it can be used as the spread spectrum sequence in the quasi-synchronous CDMA systems.