一种数字话音通信系统的设计与实现  

Design and Implementation of Digital Voice Communication System

作　　者：刘金环[1] 李众立[1] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621010

出　　处：《通信技术》2011年第9期24-26,29,共4页Communications Technology

摘　　要：基于CD22103芯片和MSM7512B芯片,介绍了一种数字话音通信系统的设计方法,实现了话音信号的基带传输和载波传输。首先介绍了应用APR9600芯片获得模拟信号,之后利用MC34115芯片实现模拟信号的增量调制,然后是基于CD22103芯片的HDB3编译码的设计,完成数字信号的基带传输,同时基于MSM7512B芯片实现数字信号的载波传输,最后在数字示波器上显示了实验波形,验证了设计的有效性和可行性。A design of digital voice communication system based on CD22103 chip and MSM7512B chip is proposed,thus to realize baseband transmission and carrier transmission of the voice signal.This paper first describes the application of APR9600 chip to receiving analog signals,then of MC34115 chip to achieving the delta modulation of analog signals,and then describes the HDB3 encoding/decoding design based on CD22103 chip and the realization of digital signal＇s baseband transmission.Meanwhile,based on MSM7512B chip,the digital signal＇s carrier transmission is also achieved.Finally,digital oscilloscope shows the experimental waveforms and verifies the effectiveness and feasibility of the design.

关 键 词：CD22103 基带传输 MSM7512B 载波传输 

分 类 号：TN914.3[电子电信—通信与信息系统]