Simulation of MIMO Channel Capacity With
Antenna Polarization Diversity
Liang Dong, Hosung Choo,
Robert W. Heath Jr,
IEEE Trans. Wireless,
, vol. 4, no. 4, pp. 1869-1873, July 2005.
A simulation study of the channel capacity of a MIMO system based
on antenna polarization diversity is carried out. We focus on a
simple yet realistic tri-monopole antenna structure, taking into
account of all the mutual coupling and casing effects using the
computational electromagnetics solver NEC. Simulation results
show that using the tri-monopole antennas can offer channel
capacity that approaches the capacity of an uncorrelated MIMO
Rayleigh channel. In addition, it is shown that the capacity
increase is mainly attributed to polarization diversity instead
of pattern diversity. We also find that the mutual coupling and
casing effects in the tri-monopole system can actually provide a
large capacity increase with less constraint on the antenna
configurations than the idealized tri-dipole system. Furthermore,
in contrast to spatially diverse systems, the capacity increase
from the polarization diverse system is less sensitive to the
different multipath environments.
Arrays, Array Signal Processing, Mutual Coupling
preprint is available in IEEE Xplore format.