摘要
介绍了一种基于OFDM调制的电力线载波系统的设计,采用MCU+DSP的方案。LPC2132作为主控中心,负责产生PN序列码,并控制显示屏。TMS320C6701作为OFDM调制的运算核心,完成IFFT和FFT算法。文中设计了配合DSP输出的DA转换,低通滤波以及电力线耦合等电路。用显示屏来显示发送和接收的数据并验证接收数据的对错。
The paper introduces a design of system based on OFDM modulation of the power line carrier,which use of MCU + DSP proposal.LPC2132 as a control centre responsible for a PN sequence code generate,and controlling the display.The Digital Signal Processor TMS320C6701 which take OFDM modulation as the core operations,completed IFFT and the FFT algorithm.This paper also introduces the design of DA conversion output,low pass filter and power lines coupled circuit.Display screen used to display send and receive data and verify the correction of receiving data.
出处
《微型电脑应用》
2009年第6期17-19,4-5,共3页
Microcomputer Applications
