Title :
Utility Maximization Strategies in the Multi-User MIMO Downlink
Author :
Brehmer, Johannes ; Utschick, Wolfgang
Author_Institution :
Associate Inst. for Signal Process., Tech. Univ. Munchen, Munich
Abstract :
The problem of maximizing utility over the capacity region of the MIMO broadcast channel is addressed. While a direct solution is not possible, it is discussed how decomposition techniques can be used to find an optimum solution. Two decompositions are considered: A standard dual decomposition and a gradient projection-based decomposition.
Keywords :
MIMO communication; broadcast channels; multi-access systems; multiuser channels; MIMO broadcast channel; decomposition techniques; gradient projection-based decomposition; multiuser MIMO downlink; standard dual decomposition; utility maximization strategies; Broadcasting; Covariance matrix; Downlink; MIMO; Measurement; Physical layer; Receiving antennas; Signal processing; Time sharing computer systems; Transmitters;
Conference_Titel :
Cross Layer Design, 2007. IWCLD '07. International Workshop on
Conference_Location :
Jinan
Print_ISBN :
978-1-4244-1283-9
Electronic_ISBN :
978-1-4244-1284-6
DOI :
10.1109/IWCLD.2007.4379044
