Title :
Spatial, spectral and temporal adaptation for fast fading MIMO-OFDMA systems
Author :
Kecicioglu, Balkan ; Qiu, Wenxun ; Minn, Hlaing ; Hansen, John H L
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Dallas, TX, USA
Abstract :
Modern wireless communication systems are designed to operate in diverse propagation conditions. Adaptive transmission techniques are powerful tools for achieving this objective. We propose a new adaptive transmission method for fast fading channels. The new method combines benefits of closed loop and open loop transmission techniques by efficient utilization of resources in time, frequency and spatial domains. In the new approach we consider how to allocate different MIMO schemes and alternative subchannelization methods in a given frame depending on the mobile speed, number of antennas and signal-to-noise ratio (SNR). Numerical results show effectiveness of the proposed method for a wide range of mobile speeds.
Keywords :
MIMO communication; OFDM modulation; fading channels; frequency division multiple access; numerical analysis; adaptive transmission techniques; closed loop transmission techniques; diverse propagation conditions; fast fading MIMO-OFDMA systems; frequency domains; mobile speeds; open loop transmission techniques; signal-to-noise ratio; spatial adaptation; spatial domains; spectral adaptation; subchannelization methods; temporal adaptation; time domains; wireless communication systems; Bit error rate; Fading; Measurement; Mobile communication; OFDM; Signal to noise ratio; Transmitters;
Conference_Titel :
GLOBECOM Workshops (GC Wkshps), 2011 IEEE
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4673-0039-1
Electronic_ISBN :
978-1-4673-0038-4
DOI :
10.1109/GLOCOMW.2011.6162521
