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.
出处
《压电与声光》
CSCD
北大核心
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)
