HDSL——实现高速数字用户线的新方案

HDSL——A New Solution to High-bit-rate Digital Subscriber Line

高比特率数字用户线(HDSL)是对在现有铜线对上进行高速、短距离通信的重大突破。它采用2BIQ编码和先进的信号处理技术,可提高现有铜线用户线的性能。运行时不需要增音设备,允许有桥接抽头和使用不同线规的电缆。本文对HDSL的原理、特性及应用进行了较为详尽的论述。

HDSL represents a major breakthrough in loop circuits of limited distance, capcable of high speed transmission on copper facilities. By using 2B1Q line coding and advanced signal processing technology, it improves the transmission performance of existing copper subscriber lines, allowing repeaterless operation regardless of bridged taps and gauge changes. This paper presents in detail the rationale, characteristics and deployment of H DSL.