Title :
Power consumption analysis of user-identity feedback
Author :
Hwang, Chan-Soo ; Moon, Hichan
Author_Institution :
SAIT, Samsung Electron. Co. Ltd., Suwon
fDate :
2/1/2009 12:00:00 AM
Abstract :
User-identity feedback was proposed to achieve multi-user diversity while minimizing feedback load. This letter mathematically shows that the transmit-power consumption of the user-identity feedback converges to zero as the number of users increases. Numerical results in a Rayleigh fading channel show that the transmit-power saving is substantial even with small number of users.
Keywords :
Rayleigh channels; diversity reception; feedback; multiuser channels; Rayleigh fading channel; multiuser diversity; power consumption analysis; transmit-power saving; user-identity feedback; Downlink; Energy consumption; Fading; Feedback communications; Feeds; Helium; Moon; Multiuser detection; Rayleigh channels; Signal to noise ratio; Broadcast channels, feedback communication, multi-user diversity;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.081958
