Title :
Towards a joint optimization of scheduling and beamforning for MIMO downlink
Author :
Primolevo, G. ; Simeone, O. ; Spagnolini, U.
Author_Institution :
Dipt. di Elettronica e Inf., Politecnico di Milano
Abstract :
In the downlink of a multi-user MIMO system, the base station can multiplex signals intended to different users on the same spectral resource. Joint optimization of channel assignment (scheduling) and beamforming in such a scenario is an open problem. Assuming forcing linear beamforming at the base station, this paper addresses this task by investigating a novel greedy solution that approximately maximizes the sum-rate. Performance of the proposed method is studied through numerical simulation and compared with known solutions based on combinatorial search
Keywords :
MIMO communication; antenna arrays; array signal processing; channel allocation; greedy algorithms; numerical analysis; scheduling; base station; channel assignment; forcing linear beamforming; greedy solution; multiple input multiple output; multiuser MIMO system; numerical simulation; scheduling-beamforming optimization; Array signal processing; Base stations; Broadcasting; Downlink; MIMO; Numerical simulation; Receiving antennas; Spread spectrum communication; Transmitters; USA Councils;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2006 IEEE Ninth International Symposium on
Conference_Location :
Manaus-Amazon
Print_ISBN :
0-7803-9779-7
Electronic_ISBN :
0-7803-9780-0
DOI :
10.1109/ISSSTA.2006.311820
