Title :
Power Allocation for Eigen- Beamforming Used in Multi-Antenna System
Author :
Liu, Linnan ; Kuang, Jingming ; Fei, Zesong
Author_Institution :
Beijing Inst. of Technol., Beijing
Abstract :
Eigen-beamforming technique is introduced in two typical multi-antenna systems: space-time block coding and VBALST. When the channel covariance information is known by the transmitter, optimal power allocation algorithm for eigen-beamforming is proposed based on minimizing the transmission errors. Also, it is indicated in this paper that this algorithm can be simplified when the channel is independent - identically distributed (I.I.D.) channel. By simulation and analysis, eigen-beamforming can greatly improve the performance of multi-antenna system when this power allocation algorithm is adopted.
Keywords :
block codes; channel allocation; channel coding; covariance matrices; eigenvalues and eigenfunctions; minimisation; multibeam antennas; space-time codes; VBALST; channel covariance information; channel covariance matrix; eigen-beamforming technique; independent identically distributed channel; multi-antenna system; optimal power allocation algorithm; space-time block coding; transmission error minimization; Array signal processing; Bit error rate; Block codes; Land mobile radio; MIMO; Mobile communication; Power system modeling; Radio transmitters; Space technology; Transmitting antennas; STBC; VBLAST; eigen-beamforming; multi-antenna system; power allocation;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394457
