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Linear Precoder Design for Simultaneous Information and Energy Transfer over Two-User MIMO Interference Channels

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Title: Linear Precoder Design for Simultaneous Information and Energy Transfer over Two-User MIMO Interference Channels
Authors: Ozcelikkale, Ayca, 1982, Duman, T. M.
Source: IEEE Transactions on Wireless Communications. 14(10):5836-5847
Subject Terms: quality-of-service, multi-terminal, multi-user, wireless energy transfer, signal-to-noise ratio (SNR), wireless power transfer, energy harvesting, simultaneous wireless information and power transfer (SWIPT), interference channel, minimum mean-square error (MMSE)
Description: Communication strategies that utilize wireless media for simultaneous information and power transfer offer a promising perspective for efficient usage of energy resources. With this motivation, we focus on the design of optimal linear precoders for interference channels utilizing such strategies. We formulate the problem of minimizing the total minimum mean-square error while keeping the energy harvested at the energy receivers above given levels. Our framework leads to a non-convex problem formulation. For point-to-point multiple-input multiple-output channels, we provide a characterization of the optimal solutions under a constraint on the number of transmit antennas. For the general interference scenario, we propose two numerical approaches, one for the single antenna information receivers case, and the other for the general case. We also investigate a hybrid signalling scheme, where the transmitter sends a superposition of two signals: a deterministic signal optimized for energy transfer and an information carrying signal optimized for information and energy transfer. It is illustrated that if hybrid signalling is not incorporated into the transmission scheme, interference can be detrimental to the system performance when the number of antennas at the receivers is low.}
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  Data: Linear Precoder Design for Simultaneous Information and Energy Transfer over Two-User MIMO Interference Channels
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  Data: <searchLink fieldCode="AR" term="%22Ozcelikkale%2C+Ayca%22">Ozcelikkale, Ayca</searchLink>, 1982<br /><searchLink fieldCode="AR" term="%22Duman%2C+T%2E+M%2E%22">Duman, T. M.</searchLink>
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  Data: <i>IEEE Transactions on Wireless Communications</i>. 14(10):5836-5847
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  Data: <searchLink fieldCode="DE" term="%22quality-of-service%22">quality-of-service</searchLink><br /><searchLink fieldCode="DE" term="%22multi-terminal%22">multi-terminal</searchLink><br /><searchLink fieldCode="DE" term="%22multi-user%22">multi-user</searchLink><br /><searchLink fieldCode="DE" term="%22wireless+energy+transfer%22">wireless energy transfer</searchLink><br /><searchLink fieldCode="DE" term="%22signal-to-noise+ratio+%28SNR%29%22">signal-to-noise ratio (SNR)</searchLink><br /><searchLink fieldCode="DE" term="%22wireless+power+transfer%22">wireless power transfer</searchLink><br /><searchLink fieldCode="DE" term="%22energy+harvesting%22">energy harvesting</searchLink><br /><searchLink fieldCode="DE" term="%22simultaneous+wireless+information+and+power+transfer+%28SWIPT%29%22">simultaneous wireless information and power transfer (SWIPT)</searchLink><br /><searchLink fieldCode="DE" term="%22interference+channel%22">interference channel</searchLink><br /><searchLink fieldCode="DE" term="%22minimum+mean-square+error+%28MMSE%29%22">minimum mean-square error (MMSE)</searchLink>
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  Label: Description
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  Data: Communication strategies that utilize wireless media for simultaneous information and power transfer offer a promising perspective for efficient usage of energy resources. With this motivation, we focus on the design of optimal linear precoders for interference channels utilizing such strategies. We formulate the problem of minimizing the total minimum mean-square error while keeping the energy harvested at the energy receivers above given levels. Our framework leads to a non-convex problem formulation. For point-to-point multiple-input multiple-output channels, we provide a characterization of the optimal solutions under a constraint on the number of transmit antennas. For the general interference scenario, we propose two numerical approaches, one for the single antenna information receivers case, and the other for the general case. We also investigate a hybrid signalling scheme, where the transmitter sends a superposition of two signals: a deterministic signal optimized for energy transfer and an information carrying signal optimized for information and energy transfer. It is illustrated that if hybrid signalling is not incorporated into the transmission scheme, interference can be detrimental to the system performance when the number of antennas at the receivers is low.}
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        Value: 10.1109/TWC.2015.2443099
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      – Text: English
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        PageCount: 12
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    Subjects:
      – SubjectFull: quality-of-service
        Type: general
      – SubjectFull: multi-terminal
        Type: general
      – SubjectFull: multi-user
        Type: general
      – SubjectFull: wireless energy transfer
        Type: general
      – SubjectFull: signal-to-noise ratio (SNR)
        Type: general
      – SubjectFull: wireless power transfer
        Type: general
      – SubjectFull: energy harvesting
        Type: general
      – SubjectFull: simultaneous wireless information and power transfer (SWIPT)
        Type: general
      – SubjectFull: interference channel
        Type: general
      – SubjectFull: minimum mean-square error (MMSE)
        Type: general
    Titles:
      – TitleFull: Linear Precoder Design for Simultaneous Information and Energy Transfer over Two-User MIMO Interference Channels
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            NameFull: Ozcelikkale, Ayca
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            NameFull: Duman, T. M.
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              Type: published
              Y: 2015
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              Value: 10
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            – TitleFull: IEEE Transactions on Wireless Communications
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