Performance evaluation of IB-DFE-based strategies for SC-FDMA systems

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Abstract

The aim of this paper is to propose and evaluate multi-user iterative block decision feedback equalization (IB-DFE) schemes for the uplink of single-carrier frequency-division multiple access (SC-FDMA)-based systems. It is assumed that a set of single antenna users share the same physical channel to transmit its own information to the base station, which is equipped with an antenna array. Two space-frequency multi-user IB-DFE-based processing are considered: iterative successive interference cancellation and parallel interference cancellation. In the first approach, the equalizer vectors are computed by minimizing the mean square error (MSE) of each individual user, at each subcarrier. In the second one, the equalizer matrices are obtained by minimizing the overall MSE of all users at each subcarrier. For both cases, we propose a simple yet accurate analytical approach for obtaining the performance of the discussed receivers. The proposed schemes allow an efficient user separation, with a performance close to the one given by the matched filter bound for severely time-dispersive channels, with only a few iterations.
Original languageUnknown
Pages (from-to)-
JournalEurasip Journal On Wireless Communications And Networking
Issue numberNA
DOIs
Publication statusPublished - 1 Jan 2013

Keywords

    Cite this

    @article{0612c3bae76a4a61ad35d4f7eb652080,
    title = "Performance evaluation of IB-DFE-based strategies for SC-FDMA systems",
    abstract = "The aim of this paper is to propose and evaluate multi-user iterative block decision feedback equalization (IB-DFE) schemes for the uplink of single-carrier frequency-division multiple access (SC-FDMA)-based systems. It is assumed that a set of single antenna users share the same physical channel to transmit its own information to the base station, which is equipped with an antenna array. Two space-frequency multi-user IB-DFE-based processing are considered: iterative successive interference cancellation and parallel interference cancellation. In the first approach, the equalizer vectors are computed by minimizing the mean square error (MSE) of each individual user, at each subcarrier. In the second one, the equalizer matrices are obtained by minimizing the overall MSE of all users at each subcarrier. For both cases, we propose a simple yet accurate analytical approach for obtaining the performance of the discussed receivers. The proposed schemes allow an efficient user separation, with a performance close to the one given by the matched filter bound for severely time-dispersive channels, with only a few iterations.",
    keywords = "SIC, PIC, SC-FDMA, Multi-user separation, Cellular systems, IB-DFE",
    author = "Dinis, {Rui Miguel Henriques Dias Morgado} and {DEE Group Author}",
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    year = "2013",
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    doi = "10.1186/1687-1499-2013-292",
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    TY - JOUR

    T1 - Performance evaluation of IB-DFE-based strategies for SC-FDMA systems

    AU - Dinis, Rui Miguel Henriques Dias Morgado

    AU - DEE Group Author

    N1 - Sem pdf

    PY - 2013/1/1

    Y1 - 2013/1/1

    N2 - The aim of this paper is to propose and evaluate multi-user iterative block decision feedback equalization (IB-DFE) schemes for the uplink of single-carrier frequency-division multiple access (SC-FDMA)-based systems. It is assumed that a set of single antenna users share the same physical channel to transmit its own information to the base station, which is equipped with an antenna array. Two space-frequency multi-user IB-DFE-based processing are considered: iterative successive interference cancellation and parallel interference cancellation. In the first approach, the equalizer vectors are computed by minimizing the mean square error (MSE) of each individual user, at each subcarrier. In the second one, the equalizer matrices are obtained by minimizing the overall MSE of all users at each subcarrier. For both cases, we propose a simple yet accurate analytical approach for obtaining the performance of the discussed receivers. The proposed schemes allow an efficient user separation, with a performance close to the one given by the matched filter bound for severely time-dispersive channels, with only a few iterations.

    AB - The aim of this paper is to propose and evaluate multi-user iterative block decision feedback equalization (IB-DFE) schemes for the uplink of single-carrier frequency-division multiple access (SC-FDMA)-based systems. It is assumed that a set of single antenna users share the same physical channel to transmit its own information to the base station, which is equipped with an antenna array. Two space-frequency multi-user IB-DFE-based processing are considered: iterative successive interference cancellation and parallel interference cancellation. In the first approach, the equalizer vectors are computed by minimizing the mean square error (MSE) of each individual user, at each subcarrier. In the second one, the equalizer matrices are obtained by minimizing the overall MSE of all users at each subcarrier. For both cases, we propose a simple yet accurate analytical approach for obtaining the performance of the discussed receivers. The proposed schemes allow an efficient user separation, with a performance close to the one given by the matched filter bound for severely time-dispersive channels, with only a few iterations.

    KW - SIC

    KW - PIC

    KW - SC-FDMA

    KW - Multi-user separation

    KW - Cellular systems

    KW - IB-DFE

    U2 - 10.1186/1687-1499-2013-292

    DO - 10.1186/1687-1499-2013-292

    M3 - Article

    SP - -

    JO - Eurasip Journal On Wireless Communications And Networking

    JF - Eurasip Journal On Wireless Communications And Networking

    SN - 1687-1472

    IS - NA

    ER -