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Polynomial matrix decompositions and semi-blind channel estimation for MIMO frequency-selective channels

journal contribution
posted on 09.07.2019, 12:56 by Diyari Hassan, Soydan Redif, Sangarapillai Lambotharan
Polynomial eigenvalue decomposition (PEVD) and polynomial QR decomposition (PQRD) are generalisation of eigenvalue decomposition (EVD) and QR decomposition (QRD), and they are suitable for decoupling and precoding of frequencyselective (FS) multiple-input multiple-output (MIMO) channels. Precoding and decoding of communication channels however require reliable estimation of the channel which is normally achieved through use of pilot signals. The pilot transmission will reduce spectral efficiency due to lower data throughput – not particularly attractive for FS-MIMO channels. In this paper, we therefore introduce a new method that utilises a semi-blind channel estimation (semi-BCE) scheme coupled with PQRD/PEVDbased MIMO-channel decomposition to enable efficient communications over wireless MIMO channels. The proposed semi-BCE algorithm is a generalisation of a recently developed single-input single output (SISO) BCE method to MIMO systems. A new class of PQRD algorithms is introduced, which is based on the recently-developed sequential matrix diagonalization (SMD). The decoders produced by the proposed SMD-based PQRD algorithm are shown to be more suitable (efficient) for MIMO-channel equalisation than those generated by the prior art. Computer simulations show that the proposed MIMO-channel coding strategy compares favourably to state-of-the-art MIMO systems, in terms of bit error rate (BER) performance, while reducing the overhead.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

IET Signal Processing

Citation

HASSAN, D., REDIF, S. and LAMBOTHARAN, S., 2018. Polynomial matrix decompositions and semi-blind channel estimation for MIMO frequency-selective channels. IET Signal Processing, 13(3), pp. 356 – 366.

Publisher

© Institution of Engineering and Technology (IET)

Version

SMUR (Submitted Manuscript Under Review)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

07/12/2018

Publication date

2018-12-18

Notes

This paper is in closed access.

ISSN

1751-9675

eISSN

1751-9683

Language

en

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