Transmitter-side antennas correlation in SVD-assisted MIMO systems

Ahrens, Andreas and Cano Broncano, Francisco and Benavente Peces, César (2014). Transmitter-side antennas correlation in SVD-assisted MIMO systems. In: "10th International Joint Conference on E-Business and Telecommunications, ICETE 2013", 29/07/2013 - 31/07/2013, Reykjavik, Iceland. ISBN 978-3-662-44787-1. pp. 402-417.

Description

Title: Transmitter-side antennas correlation in SVD-assisted MIMO systems
Author/s:
  • Ahrens, Andreas
  • Cano Broncano, Francisco
  • Benavente Peces, César
Item Type: Presentation at Congress or Conference (Article)
Event Title: 10th International Joint Conference on E-Business and Telecommunications, ICETE 2013
Event Dates: 29/07/2013 - 31/07/2013
Event Location: Reykjavik, Iceland
Title of Book: E-Business and telecommunications: international Joint Conference, ICETE 2013, Reykjavik, Iceland, July 29-31, 2013, revised selected papers
Date: 2014
ISBN: 978-3-662-44787-1
Volume: 456
Subjects:
Freetext Keywords: Multiple-Input Multiple-Output (MIMO) System Wireless transmission Singular value decomposition (SVD) Bit allocation Power allocation Antennas correlation
Faculty: E.T.S.I. y Sistemas de Telecomunicación (UPM)
Department: Teoría de la Señal y Comunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

MIMO techniques allow increasing wireless channel performance by decreasing the BER and increasing the channel throughput and in consequence are included in current mobile communication standards. MIMO techniques are based on benefiting the existence of multipath in wireless communications and the application of appropriate signal processing techniques. The singular value decomposition (SVD) is a popular signal processing technique which, based on the perfect channel state information (PCSI) knowledge at both the transmitter and receiver sides, removes inter-antenna interferences and improves channel performance. Nevertheless, the proximity of the multiple antennas at each front-end produces the so called antennas correlation effect due to the similarity of the various physical paths. In consequence, antennas correlation drops the MIMO channel performance. This investigation focuses on the analysis of a MIMO channel under transmitter-side antennas correlation conditions. First, antennas correlation is analyzed and characterized by the correlation coefficients. The analysis describes the relation between antennas correlation and the appearance of predominant layers which significantly affect the channel performance. Then, based on the SVD, pre- and post-processing is applied to remove inter-antenna interferences. Finally, bit- and power allocation strategies are applied to reach the best performance. The resulting BER reveals that antennas correlation effect diminishes the channel performance and that not necessarily all MIMO layers must be activated to obtain the best performance.

More information

Item ID: 36895
DC Identifier: http://oa.upm.es/36895/
OAI Identifier: oai:oa.upm.es:36895
Official URL: http://www.icete.org/Home.aspx?y=2013
Deposited by: Memoria Investigacion
Deposited on: 29 Mar 2016 16:16
Last Modified: 29 Mar 2016 16:16
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