Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

Initial results on an MMSE precoding and equalisation approach to MIMO PLC channels

Weiss, Stephan and Moret, Nicola and Millar, Andrew Paul and Tonello, Andrea and Stewart, Robert (2011) Initial results on an MMSE precoding and equalisation approach to MIMO PLC channels. In: 15th IEEE International Symposium on Power Line Communications and its Applications 2011, 2011-04-03 - 2011-04-06, University of Udine.

[img]
Preview
PDF
weiss11a.pdf - Preprint

Download (732kB) | Preview

Abstract

This paper addresses some initial experiments using polynomial matrix decompositions to construct MMSE precoders and equalisers for MIMO power line communications (PLC) channels. The proposed scheme is based on a Wiener formulation based on polynomial matrices, and recent results to design and implement such systems with polynomial matrix tools. Applied to the MIMO PLC channel, the strong spectral dynamics of the PLC system together with the long impulse responses contained in the MIMO system result in problems, such that diagonlisation and spectral majorisation is mostly achieved in bands of high energy, while low-energy bands can resist any diagonalisation efforts. We introduce the subband approach in order to deal with this problem. A representative example using a simulated MIMO PLC channel is presented.