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IEICE Transactions on Information and Systems 2008 E91-D(12):2892-2896; doi:10.1093/ietisy/e91-d.12.2892
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Speech and Hearing

Realtime Joint Speech Coding and Transmission Algorithm for High Packet Loss Rate Wireless Channels*

Tan PENG1, Huijuan CUI1, Kun TANG1 and Wei MIAO1

1 The authors are with the State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Information Science and Technology, and Department of Electronic Engineering, Tsinghua University, Beijing 100084, P. R. China.E-mail: pengtanthu{at}gmail.com


  Abstract

In digital speech communication over noisy high packet loss rate wireless channels, improving the overall performance of the realtime speech coding and transmission system is of great importance. A novel joint speech coding and transmission algorithm is proposed by fully exploiting the correlation between speech coding, channel coding and the transmission process. The proposed algorithm requires no algorithm delay and less bandwidth expansion while greatly enhancing the error correcting performance and the reconstructed speech quality compared with conventional algorithms. Simulations show that the residual error rate is reduced by 84.36% and the MOS (Mean Opinion Score) is improved over 38.86%.

Key Words: speech coding, joint source and channel coding, coded transmission

Manuscript received June 16, 2008. Manuscript revised August 17, 2008.

* This work is supported by the National Natural Science Foundation of China (NSFC), Grant No. 60572081.


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