Analysis of millimetre-wave polarization diverse multiple-input multiple-output capacity. Issue 12 (December 2015)

• Record Type: Journal Article
• Authors: Lawrence, Nicholas P.; Ng, Brian W.-H.; Hansen, Hedley J.; Abbott, Derek
• Is Part Of: Royal Society open science. Volume 2:Issue 12(2015)
• Publication Date: 2015-12
• Subjects: microwaves -- polarization -- diversity; Science -- Periodicals; 500
• DOI: 10.1098/rsos.150322
• Languages: English
• ISSNs: 2054-5703

Abstract

Abstract : Millimetre-waves offer the possibility of wide bandwidth and consequently high data rate for wireless communications. For both uni- and dual-polarized systems, signals sent over a link may suffer severe degradation due to antenna misalignment. Orientation robustness may be enhanced by the use of mutual orthogonality in three dimensions. Multiple-input multiple-output polarization diversity offers a way of improving signal reception without the limitations associated with spatial diversity. Scattering effects often assist propagation through multipath. However, high path loss at millimetre-wave frequencies may limit any reception enhancement through scattering. We show that the inclusion of a third orthogonal dipole provides orientation robustness in this setting, as well as in a rich scattering environment, by means of a Rician fading channel model covering all orientations for a millimetre-wave, tri-orthogonal, half-wave dipole transmitter and receiver employing polarization diversity. Our simulation extends the analysis into three dimensions, fully exploiting individual sub-channel paths. In both the presence and absence of multipath effects, capacity is observed to be higher than that of a dual-polarized system over the majority of a field of view.