Effect of space-time correlation on the capacity in MIMO-OFDM channel

  • Authors:

  • Yonghua Li;Lin Zhang;Dong Liang;Tiejun Lv

  • Affiliations:

  • School of Information & Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China;School of Information & Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China;School of Information & Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China;School of Information & Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China

  • Venue:
  • WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
  • Year:
  • 2009

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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 clusterbased 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.