Title :
Precoding and Power Allocation Algorithm for Individual QoS in Downlink MU-MIMO System
Author :
Le, Jiajing ; Li, Li ; Zhang, Jing ; Luo, Hanwen
Author_Institution :
Coll. of Inf. & Electr. Eng., Shanghai Normal Univ., Shanghai, China
Abstract :
A joint linear precoding and power allocation scheme based on users´ QoS requirement was proposed for the downlink of multi-user MIMO systems. The scheme is developed as follow, on the basis of the precoding, the transmit power allocation for different user will be optimized to maximize the channel capacity and to meet the users´ service requirement. The simulation result shows that the algorithm will get 1.8 dB gain approximately compared with that of SINR & PA under the same channel capacity. The users´ service requirement will also be met in low SNR region (0 dB ~ 4 dB) .
Keywords :
MIMO communication; channel capacity; multi-access systems; precoding; quality of service; QoS; SINR; channel capacity; downlink MU-MIMO system; linear precoding; power allocation algorithm; Channel capacity; Downlink; MIMO; Mobile antennas; Noise cancellation; Radio transmitters; Radiofrequency interference; Signal to noise ratio; System performance; Transmitting antennas;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5305629
