Title :
Radio resource management for MIMO-OFDMA access in Rayleigh fading channel
Author :
Mraz, Albert ; Zambó, Tamás ; Imre, Sándor
Author_Institution :
Dept. of Telecommun., Budapest Univ. of Technol. & Econ., Budapest, Hungary
Abstract :
Radio resource allocation algorithm is proposed for multiuser MIMO-OFDM environment providing proportional fairness. Familiar MIMO radio channel model is extended for OFDMA transmission, exploiting multiuser diversity. Antenna selection is realized for maximizing overall data rate based on MIMO channel estimation. Adaptive M-QAM modulation is performed on selected antennas on each subcarrier, taking into account singular value decomposition based power gain values from the analytical calculation of MIMO channel capacity. Transmit power control is included over subcarriers and transmit antennas providing fairness among users.
Keywords :
MIMO communication; OFDM modulation; antenna arrays; diversity reception; frequency division multiple access; mobility management (mobile radio); quadrature amplitude modulation; MIMO channel estimation; MIMO-OFDMA access; OFDMA transmission; Rayleigh fading channel; adaptive M-QAM modulation; antenna selection; multiuser MIMO-OFDM environment; multiuser diversity; next generation mobile telecommunication systems; radio resource allocation algorithm; radio resource management; transmit power control; Adaptive arrays; Channel capacity; Channel estimation; Fading; MIMO; Performance analysis; Performance gain; Power control; Resource management; Singular value decomposition;
Conference_Titel :
Wireless Conference (EW), 2010 European
Conference_Location :
Lucca
Print_ISBN :
978-1-4244-5999-5
DOI :
10.1109/EW.2010.5483426
