多载波码分多址通信系统中抑制干扰的序列设计

Construction of Interference-Resistant Sequences for Multi-Carrier CDMA Communication Systems

针对多载波码分多址通信系统,该文提出了一种具有优良性能的序列构造方法。此方法基于传统的零相关区序列,通过交织扩展后可以产生互补形式的多子集序列。该类序列具有周期互补特性,从而使系统拥有更强的抗多径干扰和多址干扰的能力。该文证明了所构造序列的周期相关性能,并通过构造举例进一步验证了这种构造方法是互补特性与零相关区特性的有效结合方式。

A construction scheme of sequences with good properties for multi-carrier code division multiple access communication systems is presented. The proposed method is based on sequences with Zero Correlation Zone （ZCZ）, and a novel kind of sequences with complementary mode and multiple subsets can be obtained by interleaving these ZCZ sequences. The designed sequences have periodic complementary characteristics, which leads to stronger ability to resist multi-path interference and multiple access interference. This paper proves the periodic correlation properties of the constructed sequences, and the construction example shows that the proposed method combines effectively complementary characteristics and ZCZ characteristics.