Title :
A robust transmitter design for MIMO multicarrier systems with imperfect channel estimates
Author :
Rey, Francesc ; Lamarca, Mariano ; Vazquez, G.
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
The paper proposes an algorithm that allocates the available power among all subcarriers and subchannels in an OFDM MIMO system under a minimum BER criterion. The design, robust to channel estimation errors, takes into account the different reliability of CSI estimates at both ends of the transmitter link. The obtained algorithm accepts different transmission rates, so it can use spatial diversity to improve channel reliability or to increase transmission rate.
Keywords :
OFDM modulation; channel estimation; diversity reception; error statistics; radio transmitters; telecommunication network reliability; CSI estimation reliability; MIMO multicarrier systems; OFDM; available power allocation; channel estimation errors; minimum BER criterion; robust transmitter design; spatial diversity; transmission rates; Algorithm design and analysis; Bayesian methods; Bit error rate; Cost function; Fading; MIMO; OFDM; Robustness; Transmitters; Transmitting antennas;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on
Print_ISBN :
0-7803-7858-X
DOI :
10.1109/SPAWC.2003.1319020
