低压电力线载波通信收发机架构设计

摘要

在对电力线载波通信系统技术特点和通信信道环境分析基础上,建模设计一套低压电力线载波通信收发机系统,包括基带的编码、交织与时间分集处理,脉冲成型滤波,接收端的采样时钟同步,信道均衡等主要模块.这些系统设计有针对性地解决了低压电力线载波通信的各种复杂脉冲干扰问题,A/D最佳采样问题和符号间干扰问题等系统设计难点,为后续的解交织解码处理提供具有更高信噪比的比特流.%Based on analysing the technology features of power-line carrier ( PLC) communication system and the communication channel environment, we model and design a set of transceiver system for low voltage PLC in this paper. It includes the main modules of coding, interleaving and time diversity processing of the baseband, pulse shaping filter, sampling time synchronisation and channel equalisation at receiver. The systematic design schemes target at resolving the intractable problems in low voltage PLC communication system, including a variety of complicate pulse interference/noise cancelling, A/D optimal sample phase capture, and inter symbol interference cancelling. Then the bits stream with better SNR is provided for the following processing such as de-interleaving, decoding.