解扩重扩算法在直扩系统中抗窄带干扰的应用

Suppression of Narrowband Interference in Direct Sequence Spread Using the Despread Respread Algorithm

直接序列扩频系统本身具有较强的抗窄带干扰能力,但是,仅依靠直接序列扩频系统本身的抗窄带干扰能力并不能满足系统要求。因此,就需要在扩频系统的基础上,引入自适应信号处理技术来进一步提高系统抗窄带干扰的能力。文中对解扩重扩频算法进行了软件仿真,仿真结果表明,此算法具有较强的窄带干扰抑制能力。

The direct sequence spread spectrum is capable of suppressing narrowband interference. However, the capability of the direct sequence spread spectrum to suppress the narrowband interference is not sufficient to meet the system＇s request. Therefore, it is needed to introduce the adaptive signal processing technique on the basis of the direct sequence spread spectrum to improve the performance of narrowband interference suppression in the direct sequence spread spectrum. This paper describes the algorithm of Despread Respread to suppress the NBI in DSSS. Simulation results show that this algorithm has good performance in suppressing narrowband interference.