直接序列扩谱通信 meaning in Chinese

direct sequence spread spectrum communication

Direct sequence spread spectrum ( ds - ss ) system modulates a data sequence to a high speed pseudorandom ( pn ) sequence , which extends the bandwidth of the modulated signal while decreasing the power spectrum density . it is an advanced communication system with many excellent properties such as multiple access , low probability of interception , anti - jamming and so widely used
直接序列扩谱通信是用一个高速的伪随机序列调制一个数据序列,以展宽并降低信号的功率谱密度的一种先进的通信体制,能获得多址接入、低截获特性和抗干扰能力,因此具有广泛的应用。