基于TMS320C54x实现π/4-DQPSK调制  

Implement π/4-DQPSK Modulation Based on TMS320C54x Chip

作　　者：廖长清[1] 卢建川[1] 曾利[1] 

机构地区：[1]信息产业部电子第十研究所,四川成都610036

出　　处：《电讯技术》2002年第1期1-4,共4页Telecommunication Engineering

摘　　要：本文针对TMS32 0C5 4x芯片信号处理的特点 ,采用查表法实现π 4 -DQPSK正交调制 ,用成形滤波器来消除码间干扰和频谱扩散。该结构具有实现简单、占用资源少等特点。分析结果表明 。A quadrature modulation approach of π/4-DQPSK signal for the wireless communication system based on the look-up table using TMS320C54x is presented in this paper.Inter-symbol interference(ISI) and spectral spreading problems are reduced by raised cosine filtering.The approach has such advantages as simple circuit structure and less resource consumption.Analysis result shows that this structure can be applied to practice.

关 键 词：TMS320C54X 数字信号处理器 DQPSK调制 

分 类 号：TN911.72[电子电信—通信与信息系统]