DocumentCode :
2433832
Title :
Optimal power control and source-channel coding for delay constrained traffic over wireless channels
Author :
Holliday, Tim ; Goldsmith, Andrea
Author_Institution :
Stanford Univ., CA, USA
Volume :
2
fYear :
2002
fDate :
2002
Firstpage :
831
Abstract :
A novel dynamic programming formulation is proposed for computing optimal power control, source coding, and channel coding policies when the source traffic has tight delay constraints. Our solution minimizes power consumption subject to constraints on delay for all channel gains. This provides a much tighter delay bound than an average delay constraint, averaged over time varying channel gains. We present numerical results that show the tighter delay constraints come at a significant cost in terms of power consumption. However, we also show this power penalty can be greatly mitigated through optimal source-channel coding.
Keywords :
cellular radio; combined source-channel coding; delays; dynamic programming; power control; telecommunication control; telecommunication traffic; time division multiple access; 3G mobile communications; channel coding; channel gains; delay constrained traffic; optimal power control; power consumption; power penalty; source coding; source-channel coding; third generation mobile communications systems; wireless channels; Channel coding; Constraint optimization; Delay effects; Dynamic programming; Energy consumption; Interference constraints; Power control; Quality of service; Source coding; Streaming media;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Print_ISBN :
0-7803-7400-2
Type :
conf
DOI :
10.1109/ICC.2002.996972
Filename :
996972
Link To Document :
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