用户环路对称的通信电缆数字化传输

FEASIBLE PLAN AND BASIC CALCULATION OF DIGITALIZATION TRANSMISSION OF SUBSCRIBER LINE CIRCUIT IN THE SYMMETRIC COMMUNICATION CABLE

本文阐明了用户环路在通信网数字化发展中的重要意义。分析了用户环路用对称电缆实现数字化传输的可行方案。根据串音理论，提出了电缆内能用于数字信号传输的线对数及串音影响的基本计算方法。

The paper expounds the important meaning of the subscriber line circuit in digitalization development of the communication network, and analyzes the feasible plan of the subscriber line circuit by using the symmetric cable for achieving the digitalization transmission. On the basis of crosstalk theory, the basic calculating method for the amount of linepairs which can be used in digital signal transmission and the crosstalk influence in the cable are proposed.