A discrete-time model for triply selective MIMO rayleigh fading channels

Chengshan Xiao, Jingxian Wu, Sang Yick Leong, Yahong Rosa Zheng, Khaled Letaief

Research output: Contribution to journalArticle

143 Citations (Scopus)

Abstract

A statistical discrete-time model is proposed for simulating wideband multiple-input multiple-output (MEMO) fading channels which are triply selective due to angle spread, Doppler spread, and delay spread. The new discrete-time MEMO channel model includes the combined effects of the transmit filter, physical MEMO multipath channel fading, and receive filter, and it has the same sampling period as that of the MEMO receiver. This leads to very efficient simulation of physical continuous-time MEMO channels. A new method is also presented to efficiently generate the MEMO channel stochastic coefficients. The statistical accuracy of the discrete-time MEMO channel model is rigorously verified through theoretical analysis and extensive simulations in different conditions. The high computational efficiency of the discrete-time MEMO channel model is illustrated by comparing it to that of the continuous-time MEMO channel model. The new model is further employed to evaluate the channel capacity of MEMO systems in a triply selective Rayleigh fading environment. The simulation results reveal some interesting effects of spatial correlations, multipaths, and number of antennas on the MEMO channel capacity.

Original languageEnglish
Pages (from-to)1678-1688
Number of pages11
JournalIEEE Transactions on Wireless Communications
Volume3
Issue number5
DOIs
Publication statusPublished - Sep 2004
Externally publishedYes

Fingerprint

Rayleigh Fading Channel
Discrete-time Model
Rayleigh fading
MIMO systems
Multiple-input multiple-output (MIMO)
Fading channels
Channel Model
Channel capacity
Discrete-time
Channel Capacity
Multipath propagation
Continuous Time
Computational efficiency
Filter
Multipath Channels
Rayleigh Fading
Simulation
Multiple-input multiple-output (MIMO) Systems
Antennas
Sampling

Keywords

  • Discrete-time channel model
  • Multiple-input multiple-output (MEMO) channel
  • Multiple-input multiple-output multipath channel capacity
  • Rayleigh fading
  • Triply selective fading
  • Wide-sense stationary uncorrelated scattering (WSSUS) multipath channel

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Networks and Communications

Cite this

A discrete-time model for triply selective MIMO rayleigh fading channels. / Xiao, Chengshan; Wu, Jingxian; Leong, Sang Yick; Zheng, Yahong Rosa; Letaief, Khaled.

In: IEEE Transactions on Wireless Communications, Vol. 3, No. 5, 09.2004, p. 1678-1688.

Research output: Contribution to journalArticle

Xiao, Chengshan ; Wu, Jingxian ; Leong, Sang Yick ; Zheng, Yahong Rosa ; Letaief, Khaled. / A discrete-time model for triply selective MIMO rayleigh fading channels. In: IEEE Transactions on Wireless Communications. 2004 ; Vol. 3, No. 5. pp. 1678-1688.
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