基于OMAP5912的嵌入式无线多方话务系统设计

针对天灾造成现有通信网络瘫痪而需要应急通信的需求,设计出一种以OMAP5912芯片为核心处理器的便携式无线通信系统。该系统采取无中心组织的Ad-Hoc方式进行组网,对语音信息进行压缩处理以容纳更多用户,通过混音技术将多路话音信息同时播放,从而实现多方同时通话功能。测试表明该系统支持多用户组网,可随时随地实现实时语音通信,不需要专用网络进行维护。

An embedded multi-party communication system based on OMAP5912

To meet the demand of emergency communications in unexpected cases when the existing communication facilities fall into paralysis,a portable wireless communication system is proposed,which take OMAP5912 chip as the core processor.In this system,an Ad-Hoc wireless network is set up with Wi-Fi technology,the G729a voice encoding？algorithm is employed to accommodate more users,？the mixing multiple audio decoding technology is used to achieve multi-call function.Practice shows that,this system fits well in with multi-user networks;it can serve for real-time voice communication anytime and anywhere,and does not need any private network to maintenance.