摘要
扩展频谱通信技术,是指用来传输信号的带宽远远大于信息本身带宽的一种通信技术。一般在扩频系统中所采用的扩频序列是最大长度序列,本文提出了一种新的基于多速率滤波器组结构的扩频码,其值与多速率滤波器组的冲击响应有关,并将基于这种新扩频码的扩频系统与CDMA技术在AWGN信道中相比研究其抗多径干扰,抗多用户干扰的性能。
Spread spectrum communications is a technique in which the transmission bandwidth is much larger than what is normally required to transmit at the given data rate. The traditional spreading sequences used in spread spectrum communication are the maximal length sequences. This paper introduces a new class of spreading codes based upon the multirate filter bank structures. The elements of the sequences are determined by the impulse response of each of the subbands of the synthesis bank. What is more, the performance against multiuse and multipath interference is tested with AWGN, and compared with CDMA system.
出处
《西安邮电学院学报》
2006年第1期33-36,共4页
Journal of Xi'an Institute of Posts and Telecommunications
