TY - GEN
T1 - A framework for adaptive voice communication over wireless channels
AU - Gupta, Sandeep
AU - Obeidat, Suhaib A.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - Time-varying channel error conditions of a wireless link do not allow for providing a steady service quality. Adaptability is one way to go around this problem since the quality of service (QoS) requirements can be changed as the channel status changes. In this paper, we propose a framework for adaptive voice over one-hop wireless communication between a source and a destination. Adaptability is achieved at two levels: (1) changing the voice-encoding rate, and (2) changing the signal modulation scheme. In addition to reacting to the channel conditions and hence achieving better quality, adaptation, will allow for the support of more of the offered load (i.e., higher multiplexing gain). This will introduce some issues and problems; the goal was to reach to a near-optimal operating point, where quality is not traded for bandwidth efficiency. We simulated a special case of the framework. Results show that the adaptive approach has a much less degradation in voice quality (DVQ) and allows for more voice communications to be supported.
AB - Time-varying channel error conditions of a wireless link do not allow for providing a steady service quality. Adaptability is one way to go around this problem since the quality of service (QoS) requirements can be changed as the channel status changes. In this paper, we propose a framework for adaptive voice over one-hop wireless communication between a source and a destination. Adaptability is achieved at two levels: (1) changing the voice-encoding rate, and (2) changing the signal modulation scheme. In addition to reacting to the channel conditions and hence achieving better quality, adaptation, will allow for the support of more of the offered load (i.e., higher multiplexing gain). This will introduce some issues and problems; the goal was to reach to a near-optimal operating point, where quality is not traded for bandwidth efficiency. We simulated a special case of the framework. Results show that the adaptive approach has a much less degradation in voice quality (DVQ) and allows for more voice communications to be supported.
KW - Modulation
KW - Multimedia communications
KW - Packetized voice
KW - Wireless communications
UR - http://www.scopus.com/inward/record.url?scp=33747282396&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33747282396&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2003.1200524
DO - 10.1109/WCNC.2003.1200524
M3 - Conference contribution
AN - SCOPUS:33747282396
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 1096
EP - 1101
BT - 2003 IEEE Wireless Communications and Networking Conference, WCNC 2003
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2003 IEEE Wireless Communications and Networking Conference: The Dawn of Pervasive Communication, WCNC 2003
Y2 - 16 March 2003 through 20 March 2003
ER -