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QoS guarantee and provisioning for realtime digital video over mobile ad hoc cdma networks with cross-layer design

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3 Author(s)
Qi Qu ; California Univ., San Diego, CA ; Appuswamy, R. ; Chan, Y.S.

In this article we investigate the trade-offs and the constraints for multimedia over mobile ad hoc CDMA networks, and propose a cross-layer distributed power control and scheduling protocol to resolve those trade-offs and constraints in order to provide high-quality video over wireless ad hoc CDMA networks. In particular, a distributed power control and scheduling protocol is proposed to control the incurred delay of video streaming over multihop wireless ad hoc networks, as well as the multiple access interference (MAI). We also investigate the impacts of Doppler spread and noisy channel estimates upon the end-to-end video quality, and provide a relatively robust system which employs a combination of power control and coding/interleaving to combat the effects of Doppler spread by exploiting the increased time diversity when the Doppler spread becomes large. Thus, more robust end-to-end video quality can be achieved over a wide range of channel conditions

Published in:

Wireless Communications, IEEE  (Volume:13 ,  Issue: 5 )