Title :
Power Allocation for Beamforming Relay Networks under Channel Uncertainties
Author :
Joung, Jingon ; Sayed, Ali H.
Author_Institution :
Dept. of Electr. Eng., Univ. of California (UCLA), Los Angeles, CA, USA
Abstract :
Under uncertain channel conditions, local and global power control factors for amplify-and-forward relay processing and source-destination beamforming are jointly and iteratively designed based on a minimum mean-square-error (MMSE) criterion. The influence of imperfect channel information on system performance is examined by computer simulation. As a result, it is verified that the proposed power control methods can relieve the performance degradation arising from channel uncertainties.
Keywords :
channel capacity; least mean squares methods; power control; amplify-and-forward relay processing; beamforming relay networks; channel uncertainties; imperfect channel information; minimum mean-square-error criterion; power allocation; power control methods; source-destination beamforming; Array signal processing; Computer simulation; Degradation; MIMO; Power control; Power system relaying; Relays; System performance; Transmitters; Uncertainty;
Conference_Titel :
Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-4148-8
DOI :
10.1109/GLOCOM.2009.5426019
