Title :
Modeling and Applications of Space–Time Correlation for MIMO Fading Signals
Author :
Chen, Po-Ying ; Li, Hsueh-Jyh
Author_Institution :
Sunplus mMobile Inc., Hsinchu
fDate :
7/1/2007 12:00:00 AM
Abstract :
In this paper, the space-time correlation (STC) functions of multiple-input multiple-output (MIMO) fading signals are derived for both frequency-flat and frequency-selective channels in macrocell and microcell environments. To avoid large computation load in calculating the exact STC, we recommend the concept of effective scatterers and provide simplified expressions of STC functions. The STC functions are used to calculate the coefficient matrices that are necessary for generating MIMO channels, when the vector autoregressive method is used. The analytical results are verified by Monte Carlo simulations. Finally, we use the generated channels to investigate MIMO capacities under various channel parameters and to evaluate the bit-error-rate performance of downlink wideband code-division-multiple-access system with transmit and receive diversity.
Keywords :
MIMO communication; Monte Carlo methods; autoregressive processes; channel capacity; correlation methods; diversity reception; error statistics; fading channels; MIMO capacities; MIMO channels; MIMO fading signals; Monte Carlo simulations; STC functions; bit-error-rate performance; channel modeling; channel parameters; coefficient matrices; downlink wideband code-division-multiple-access system; effective scatterers; frequency-flat channels; frequency-selective channels; macrocell environment; microcell environment; multiple-input multiple-output fading signals; receive diversity; space-time correlation functions; transmit diversity; vector autoregressive method; Channel capacity; Downlink; Fading; Frequency; MIMO; Macrocell networks; Microcell networks; Receiving antennas; Scattering; Transmitting antennas; Channel modeling; multiple-input multiple-output (MIMO); space–time correlation (STC);
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2007.897208
