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International Conference on E-Business and Telecommunications

ICETE 2010: e-Business and Telecommunications pp 395–409Cite as

Modulation-Mode Assignment for SVD-Aided and BICM-Assisted Downlink Multiuser MIMO Transmission Schemes

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Part of the book series: Communications in Computer and Information Science ((CCIS,volume 222))

Abstract

Since the capacity of multiple-input multiple-output (MIMO) systems increases linearly with the minimum number of antennas at both the transmitter as well as the receiver side, MIMO systems have attracted a lot of attention for both frequency and non-frequency selective channels and reached a state of maturity. By contrast, MIMO-aided multiple-user systems require substantial further research. 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.

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Author information

Authors and Affiliations

  1. Department of Electrical Engineering and Computer Science Communications Signal Processing Group, Hochschule Wismar, University of Technology, Business and Design, Philipp-Müller-Straße 14, 23966, Wismar, Germany

    Andreas Ahrens

  2. E.U.I.T de Telecomunicación, Universidad Politécnica de Madrid, Ctra. Valencia. km. 7, 28031, Madrid, Spain

    César Benavente-Peces

Authors
  1. Andreas Ahrens
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  2. César Benavente-Peces
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Editor information

Editors and Affiliations

  1. Department of Computer Science, Monmouth University, 07764, West Long Branch, NJ, U.S.A.

    Mohammad S. Obaidat

  2. Department of Informatics, University of Piraeus, 185 34, Piraeus, Greece

    George A. Tsihrintzis

  3. Departament of Systems and Informatics, Polytechnic Institute of Setúbal – INSTICC, Rua do Vale de Chaves - Estefanilha, 2910-761, Setúbal, Portugal

    Joaquim Filipe

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© 2012 Springer-Verlag Berlin Heidelberg

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Ahrens, A., Benavente-Peces, C. (2012). Modulation-Mode Assignment for SVD-Aided and BICM-Assisted Downlink Multiuser MIMO Transmission Schemes. In: Obaidat, M.S., Tsihrintzis, G.A., Filipe, J. (eds) e-Business and Telecommunications. ICETE 2010. Communications in Computer and Information Science, vol 222. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25206-8_26

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  • DOI: https://doi.org/10.1007/978-3-642-25206-8_26

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-25205-1

  • Online ISBN: 978-3-642-25206-8

  • eBook Packages: Computer ScienceComputer Science (R0)

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