The ergodic capacity is investigated for doubly selective (frequency selective and time varying) MIMO Rayleigh fading channels. A closed form formula is derived that quantifies the effect of the ISI fading on the ergodic capacity into an ISI degradation factor. It is discovered that, in general frequency selective MIMO channels, the inter-tap correlations of the ISI fading will reduce the ergodic capacity comparing to the frequency flat fading channel. Only in the special case when the ISI fading does not have inter-tap correlations will the ergodic capacity be the same as that of the frequency flat channel. This new formula is mathematically proved and experimentally verified via Monte-Carlo simulations.
C. Xiao and Y. R. Zheng, "Ergodic Capacity of Doubly Selective Rayleigh Fading MIMO Channels," Proceedings of the IEEE Wireless Communications and Networking, 2004. WCNC 2004, Institute of Electrical and Electronics Engineers (IEEE), Jan 2004.
The definitive version is available at http://dx.doi.org/10.1109/WCNC.2004.1311569
IEEE Wireless Communications and Networking, 2004. WCNC 2004
Electrical and Computer Engineering
Keywords and Phrases
ISI Degradation Factor; MIMO Systems; Monte Carlo Methods; Monte-Carlo Simulations; Rayleigh Channels; Doubly Selective Rayleigh Fading MIMO Channels; Ergodic Capacity; Frequency Flat Fading Channel; Intersymbol Interference; Intersymbol Interference Fading; Multiple-Input Multiple Output; Time-Varying Channels
International Standard Serial Number (ISSN)
Article - Conference proceedings
© 2004 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.