Title :
Average-SNR-Optimized user Selection Algorithm in MIMO BC Systems
Author :
Wang, Jing ; Wang, Yan ; Gao, Xiqi ; You, Xiaohu
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing
Abstract :
In this study, a user selection algorithm aiming to optimize the signal-to-noise ratio (SNR) is proposed for MIMO BC systems. After setting a threshold value, only users whose channel gains are above the set threshold are considered. While achieving the full multiplex gain, this method can get a desirable sum capacity and BER performance. Compared with the exhaustive search scheme, the system overheads, such as the amount of feedback and the number of selection in the base station, decrease evidently.
Keywords :
MIMO systems; broadcast channels; diversity reception; MIMO broadcast channels; channel gain; full multiplex gain; multiuser diversity; signal-to-noise ratio; user selection; Array signal processing; Base stations; Diversity methods; Feedback; H infinity control; MIMO; Receiving antennas; Signal to noise ratio; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-1644-8
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2008.471
