扩频多址接入 meaning in Chinese

ssma spread spectrum multiple access

The direct - sequence ( ds / ss ) multiple access , also know as code - division access ( ds - cdma ) , has significant advantages in the areas of capacity , frequency planning , privacy , and resistance to multipath fading to cellular and personal communication system . it has been the important manner of multiple access in the 3rd generation mobile communication system
由于直接序列扩频多址接入技术（也叫ds - cdma ）在蜂房移动通信系统中显示出的良好性能：系统容量大，频率规划简单，频率复用系数高，抗多径能力强，保密性，抗干扰能力强等， ds - cdma在第三代移动通信系统中已经成为首选的多址接入方式。