Title :
Voice transmission over all-IP tandem links
Author :
Wei, Bo ; Gibson, Jerry D.
Author_Institution :
Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA
Abstract :
We investigate the issues in voice communications using IP over tandem connections of wireline and wireless links with the goal of determining end-to-end system performance. We study the particular example of using G.711 speech coding in the backbone wireline network and adaptive multi-rate (AMR) speech coding in a wireless LAN tandem network and study the impact of specific methods of adaptive re-encoding, error concealment, error control coding, and network protocol design to deliver the desired end-to-end quality of service. In addition to simulation results and objective speech quality measures, we present estimation-theoretic and information-theoretic analyses for the tandem packet loss link connections.
Keywords :
IP networks; Internet telephony; adaptive codes; error correction codes; protocols; quality of service; speech coding; voice communication; wireless LAN; QoS; adaptive multirate speech coding; adaptive reencoding; all-IP tandem links; end-to-end quality of service; error concealment; error control coding; local area network; network protocol design; packet loss; speech coding; voice communications; voice transmission; wireless LAN tandem network; wireline network; Adaptive control; Adaptive systems; Error correction; Programmable control; Speech analysis; Speech coding; Spine; System performance; Wireless LAN; Wireless application protocol;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1291914
