一种基于单片SAWTDL的M元接收机性能分析  

Performance Analysis of a M-ary Spread with Single Chip SAWTDL

作　　者：褚振勇[1] 魏强[2] 易克初[1] 田红心[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室 [2]中国电子科技集团公司第26研究所,重庆400060

出　　处：《压电与声光》2006年第1期5-7,13,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(No.60172029)

摘　　要：提出了一种基于单片声表面波抽头延迟线(SAWTDL)器件实现的M元扩频接收机,它只需一个SAWTDL器件就可实现M元解扩,从而大大降低了M元扩频接收机的复杂度,避免了SAWTDL器件一致性问题的困扰,同时也降低了M元扩频的选码难度。在扩频码长远远大于M的前提下,这种新接收机的性能与理想M元扩频接收机十分接近。A novel M-ary spread spectrum receiver is presented in this paper. Paying no attention to the consistency of SAWTDL devices, the proposed receiver can achieve M-ary despread spectrum with only one chip SAWTDL device, which reduces the complexity of M-ary spread spectrum system and the difficulty of M-ary spreading codes selection effectively. The performance of the new receiver is very close to that of the optimal receiver while the length of the spreading codes is far larger than M value.

关 键 词：M元扩频 循环扩频码 声表面波抽头延迟线 

分 类 号：TN914.53[电子电信—通信与信息系统] TN812[电子电信—信息与通信工程]