Title
Power Control for User Cooperation
Abstract
For a fading Gaussian multiple access channel with user cooperation, we obtain the optimal power allocation policies that maximize the rates achievable by block Markov superposition coding. The optimal policies result in a coding scheme that is simpler than the one for a general multiple access channel with generalized feedback. This simpler coding scheme also leads to the possibility of formulating an otherwise non- concave optimization problem as a concave one. Using the channel state information at the transmitters to adapt the powers, we demonstrate significant gains over the achievable rates for existing cooperative systems.
Year
Venue
Keywords
2006
Clinical Orthopaedics and Related Research
index terms: cooperative diversity,multiple access channel,fading,user cooperation.,power control,optimization problem,indexing terms,cooperative diversity
Field
DocType
Volume
Mathematical optimization,Fading,Cooperative diversity,Computer science,Power control,Markov chain,Communication channel,Coding (social sciences),Optimization problem,Channel state information
Journal
abs/cs/060
Citations 
PageRank 
References 
0
0.34
8
Authors
2
Name
Order
Citations
PageRank
Onur Kaya110613.85
Sennur Ulukus24800386.35