Title :
Impact of Antenna Correlation in Electrically Dual-polarized Small Antennas
Author :
Jun Chen ; Talebi, Farzad ; Pratt, Thomas
Author_Institution :
Dept. of Electr. Eng., Univ. of Notre Dame Notre Dame, Notre Dame, IN, USA
Abstract :
In spatially correlated channels, the diversity provided by dual-polarized (DP) antenna systems is known to provide an increase in spectra efficiency compared to traditional copolarized (CP) systems. However, as the antenna dimensions decrease relative to the wavelength, antenna correlations will increase due to the electrically-small antenna elements. In this work, we model the impact of electrically small antennas through mode coupling and characterize performance degradations in wide-band Rayleigh fading channel models, where performance is measured in terms of bit error rates and packet error rates. System performance is measured using a multiple-input, multiple output (MIMO) emulation test bed. Signal-to-noise ratio (SNR) penalties due to antenna correlations are found to exceed 10 dB when coupling factors are significant.
Keywords :
MIMO communication; Rayleigh channels; antenna radiation patterns; broadband antennas; diversity reception; error statistics; multifrequency antennas; radiofrequency spectra; DP antenna system diversity; MIMO emulation testbed; SNR; bit error rate; dual-polarized antenna system; electrically dual-polarized small antenna correlation; electrically small antenna element; mode coupling; multiple input multiple output emulation testbed; packet error rate; signal-to-noise ratio; spatially correlated channel; spectra efficiency; wideband Rayleigh fading channel model; Antenna arrays; Bit error rate; Correlation; Couplings; Emulation; MIMO;
Conference_Titel :
Military Communications Conference (MILCOM), 2014 IEEE
Conference_Location :
Baltimore, MD
DOI :
10.1109/MILCOM.2014.71
