Title :
Cooperation vs. hierarchy: an information-theoretic comparison
Author :
Sankaranarayanan, Lalitha ; Kramer, Gerhard ; Mandayam, Narayan B.
Author_Institution :
Dept. of ECE, Rutgers Univ., Piscataway, NJ
Abstract :
The performance of source-cooperation in a multi-access network is compared to that of using a wireless relay. The former network is modeled as a multi-access channel with generalized feedback and the latter as a multi-access relay channel. Using power as the cost metric, achievable rates and outage probabilities for the two networks are compared under a total transmit power constraint and a specified geometry. The use of a relay is shown to be advantageous for a variety of wireless fading channels
Keywords :
fading channels; feedback; geometry; information theory; multi-access systems; probability; radio repeaters; achievable rates; cost metric; generalized feedback; information-theoretic comparison; multi-access network; multi-access relay channel; outage probabilities; source-cooperation performance; total transmit power constraint; wireless fading channels; wireless relay; Bandwidth; Broadcasting; Decoding; Explosions; Fading; Random variables; Rayleigh channels; Relays;
Conference_Titel :
Information Theory, 2005. ISIT 2005. Proceedings. International Symposium on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-9151-9
DOI :
10.1109/ISIT.2005.1523366
