低速数字系统LSDS ？
本文叙述了一种适用于低速数字信道的地址编码时分交换系统的新的电路方案。
A new circuit scheme for the address coded TDM switching system of low speed digital channels is discussed in this paper.
给出一种基于脉冲编码调制原理实现高速数字传输系统中低速设备接入的方法。
On the basis of PCM Encoding Theorem, a method for low rate equipments' imported into high rate digital transmission systems is given.
第二代移动通信系统(2g)是数字移动系统，能提供低速率数据业务。
Second generation mobile communication system (2g) is digital cellular system which can provide low-speed data business.
这种干扰在微波高速数字系统中表现为严重的选择性衰落，但对低速系统无明显影响。
In high bit-rate systems it appears as severe selective fading, whereas it has no significant influence on low bit-rate systems.
这种干扰在微波高速数字系统中表现为严重的选择性衰落，但对低速系统无明显影响。
In high bit-rate systems it appears as severe selective fading, whereas it has no significant influence on low bit-rate systems.
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