Modulation-mode assignment for SVD-assisted and iteratively detected downlink multiuser MIMO transmission schemes

Benavente Peces, César and Ahrens, Andreas (2011). Modulation-mode assignment for SVD-assisted and iteratively detected downlink multiuser MIMO transmission schemes. In: "2010 International Conference on Wireless Information Networks and Systems (WINSYS)", 26/07/2010 - 28/07/2010, Atenas, Grecia.

Description

Title: Modulation-mode assignment for SVD-assisted and iteratively detected downlink multiuser MIMO transmission schemes
Author/s:
  • Benavente Peces, César
  • Ahrens, Andreas
Item Type: Presentation at Congress or Conference (Article)
Event Title: 2010 International Conference on Wireless Information Networks and Systems (WINSYS)
Event Dates: 26/07/2010 - 28/07/2010
Event Location: Atenas, Grecia
Title of Book: Proceedings of the 2010 International Conference on Wireless Information Networks and Systems (WINSYS)
Date: April 2011
Subjects:
Freetext Keywords: Multiple-input multiple-output system, Singular-value decomposition, Bit allocation, Power allocation, Wireless transmission, Multiuser transmission
Faculty: E.U.I.T. Telecomunicación (UPM)
Department: Ingeniería de Circuitos y Sistemas [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this contribution we jointly optimize the number of multiple-input multiple-output (MIMO) layers and the number of bits per symbol within an iteratively-detected multiuser MIMO downlink (DL) transmission scheme under the constraint of a given fixed data throughput and integrity. Instead of treating all the users jointly as in zero-forcing (ZF) multiuser transmission techniques, the investigated singular value decomposition (SVD) assisted DL multiuser MIMO system takes the individual user's channel characteristics into account. In analogy to bit-interleaved coded irregular modulation, we introduce a MIMO-BICM scheme, where different user-specific signal constellations and mapping arrangement were used within a single codeword. Extrinsic information transfer (EXIT) charts are used for analyzing and optimizing the convergence behaviour of the iterative demapping and decoding. Our results show that in order to achieve the best bit-error rate, not necessarily all user-specific MIMO layers have to be activated

More information

Item ID: 7921
DC Identifier: http://oa.upm.es/7921/
OAI Identifier: oai:oa.upm.es:7921
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5741505&tag=1
Deposited by: Memoria Investigacion
Deposited on: 26 Jul 2011 08:09
Last Modified: 20 Apr 2016 16:52
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