基于IEEE802．15．4／ZigBee的语音通信系统

摘要

提出一种基于IEEE802.15.4的无线传输方案,该方案基于Chipcon公司开发的一款符合ZigBee标准的低功耗射频芯片CC2420,设计了以MSP430为处理器、CC2420芯片为无线通信芯片的无线语音通信系统。使用的外围器件少,实现了短距离无线语音传输和方波输出的双向数据传输,并通过正弦波实验进行代码调试,具有成本低、音质好的优点%A wireless communications technology program based on IEEE802.15.4 is proposed.A low-power chip CC2420 which conforms with ZigBee specification developed by Chipcon Enterprise is used in this program.This paper briefly introduces the architecture of wireless voice communication and a design of wireless system which uses MSP430 microcontroller and CC2420 RF transceiver.A good short-range wireless transmission and PWM output are achieved by using small external components;the effectiveness of wireless transmission is tested by sine wave.The results show that this program has the advantages of low cost and better sound quality