Title :
Effect of Space-Time Correlation on the Capacity in MIMO-OFDM Channel
Author :
Li, Yonghua ; Zhang, Lin ; Liang, Dong ; Lv, Tiejun
Author_Institution :
Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
MIMO-OFDM system is the main technology to the future wireless system. In this paper, to model multipath propagation and spatial-temporal fading correlation in frequency-selective channel, we propose a fading-correlated MIMO channel model. The channel is abstracted as a cluster-based double bounce model with multiple taps. Both transmitter and receiver are considered. The expressions of correlation coefficient and MIMO-OFDM channel capacity are derived, respectively. The effect of spatial temporal correlation on the capacity is investigated for different physical parameters. Increasing delay spread taps and cluster angular spread can increase the capacity. Two typical scenarios are simulated for indoor and outdoor environments.
Keywords :
MIMO communication; OFDM modulation; channel capacity; fading channels; multipath channels; radiowave propagation; spatiotemporal phenomena; MIMO-OFDM channel capacity; cluster-based double bounce model; frequency-selective channel; indoor-outdoor environment; multipath propagation model; space-time correlation; spatial-temporal fading correlation; wireless system; Channel capacity; Delay; Fading; Linear antenna arrays; MIMO; Receiving antennas; Scattering; Solid modeling; Space technology; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5304515
