Spread spectrum communication is used widely in the CDMA system and military communication because it can suppress narrow-band interference (NBI) in the common degree.

• 直扩通信技术作为军用通信系统和CDMA通信系统的核心技术得到了广泛的应用,且直扩通信系统本身具有一定的窄带干扰抑制能力。