短波地空语音组网中VoIP语音质量评估  

VoIP Speech Quality Evaluation in Short Wave Air-ground Voice Network

作　　者：赵国栋[1] 李栓红[1] 黄国策[1] 田伟 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077 [2]空军第三飞行学院,辽宁锦州121001

出　　处：《电视技术》2012年第7期56-59,共4页Video Engineering

基　　金：陕西省自然科学基金项目(2009JM8010)

摘　　要：短波地空话音组网是短波话音通信发展的必然趋势,组网后VoIP技术的引入会为短波语音通信带来很大的便利,但同时语音质量会受到影响,其中VoIP编码技术是影响语音质量的主要因素之一。通过Matlab对采用不同编码技术重构后的语音,经过基于Watterson模型的短波信道传输后到达接收端的质量进行了PESQ评估,并仿真分析了丢包率对不同编码语音质量的影响,得出了不同编码的优劣性。The voice network of air-ground shortwave is the certain trend of shortwave voice communication. The introduction of VolP could make great advantage for shortwave voice communication while the quality of voice is affected which is due to the main factor as voice coding. The PESQ evaluation of voice recomposed with different coding techniques at receiver transmitted by Watterson shortwave channel model is made by Matlab, and that is emulated the effect of packet loss rate for the voice quality of different coding. The results propose the performance of different coding techniques.

关 键 词：地空话音 编码技术 重构语音 WATTERSON模型 

分 类 号：TN912[电子电信—通信与信息系统] TN915[电子电信—信息与通信工程]