Title :
Linear precoding for mutual information maximization in MIMO systems
Author :
Lamarca, Meritxell
Author_Institution :
Signal Theor. & Commun. Dept., Tech. Univ. of Catalonia, Barcelona, Spain
Abstract :
We study the design of linear precoders for maximization of the mutual information in MIMO systems with arbitrary constellations and with perfect channel state information at the transmitter. We derive the structure of the optimum precoder and we show that the mutual information is concave in a quadratic function of the precoder coefficients. An iterative algorithm is also proposed to find this optimum value.
Keywords :
MIMO communication; iterative methods; linear predictive coding; precoding; MIMO systems; arbitrary constellations; iterative algorithm; linear precoding; mutual information maximization; perfect channel state information; transmitter; Algorithm design and analysis; Channel state information; Constellation diagram; Iterative algorithms; Jacobian matrices; MIMO; Matrix decomposition; Mutual information; Signal design; Transmitters;
Conference_Titel :
Wireless Communication Systems, 2009. ISWCS 2009. 6th International Symposium on
Conference_Location :
Tuscany
Print_ISBN :
978-1-4244-3584-5
Electronic_ISBN :
978-1-4244-3584-5
DOI :
10.1109/ISWCS.2009.5285230
