New results are presented for the ergodic capacity of spatially-correlated, time-varying and frequency-selective (i.e., triply selective) MIMO Rayleigh fading channels. Simplified capacity formulas are also derived for special cases such as SIMO and MISO triply selective fading channels. A closed form formula is proposed that quantifies the effect of the frequency-selective fading on the ergodic capacity into an intersymbol interference (ISI) degradation factor. It is discovered that, in general frequency-selective MIMO channels, the ISI inter-tap correlations reduce the ergodic capacity compared to the frequency flat fading channel. Only in the special case when the fading does not have ISI inter-tap correlations will the ergodic capacity be the same as that of the frequency flat channel. The new capacity results are experimentally verified via Monte-Carlo simulations.
C. Xiao and Y. R. Zheng, "Ergodic Capacity of MIMO Triply Selective Rayleigh Fading Channels," Proceedings of the IEEE Global Telecommunications Conference, 2004. GLOBECOM'04, Institute of Electrical and Electronics Engineers (IEEE), Jan 2004.
The definitive version is available at https://doi.org/10.1109/GLOCOM.2004.1378929
IEEE Global Telecommunications Conference, 2004. GLOBECOM'04
Electrical and Computer Engineering
Keywords and Phrases
ISI Inter-Tap Correlations; MIMO Systems; MIMO Triply Selective Channels; MISO Channels; Monte Carlo Methods; Monte-Carlo Simulations; Rayleigh Channels; Rayleigh Fading Channels; SIMO Channels; Channel Capacity; Channel Ergodic Capacity; Correlation Methods; Frequency Flat Fading Channel; Frequency-Selective Channels; Intersymbol Interference; Intersymbol Interference Degradation Factor; Spatially-Correlated Channels; Time-Varying Channels
Article - Conference proceedings
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