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- Publisher Website: 10.1109/TSP.2013.2281026
- Scopus: eid_2-s2.0-84888093326
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Article: Simultaneous information and power transfer for broadband wireless systems
Title | Simultaneous information and power transfer for broadband wireless systems |
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Authors | |
Keywords | Cellular networks Energy harvesting Mobile communication Power control Power transmission |
Issue Date | 2013 |
Citation | IEEE Transactions on Signal Processing, 2013, v. 61 n. 23, p. 5972-5986 How to Cite? |
Abstract | Far-field microwave power transfer (MPT) will free wireless sensors and other mobile devices from the constraints imposed by finite battery capacities. Integrating MPT with wireless communications to support simultaneous wireless information and power transfer (SWIPT) allows the same spectrum to be used for dual purposes without compromising the quality of service. A novel approach is presented in this paper for realizing SWIPT in a broadband system where orthogonal frequency division multiplexing and transmit beamforming are deployed to create a set of parallel sub-channels for SWIPT, which simplifies resource allocation. Based on a proposed reconfigurable mobile architecture, different system configurations are considered by combining single-user/multi-user systems, downlink/uplink information transfer, and variable/fixed coding rates. Optimizing the power control for these configurations results in a new class of multi-user power-control problems featuring the circuit-power constraints, specifying that the transferred power must be sufficiently large to support the operation of the receiver circuitry. Solving these problems gives a set of power-control algorithms that exploit channel diversity in frequency for simultaneously enhancing the throughput and the MPT efficiency. For the system configurations with variable coding rates, the algorithms are variants of water-filling that account for the circuit-power constraints. The optimal algorithms for those configurations with fixed coding rates are shown to sequentially allocate mobiles their required power for decoding in ascending order until the entire budgeted power is spent. The required power for a mobile is derived as simple functions of the minimum signal-to-noise ratio for correct decoding, the circuit power and sub-channel gains. © 1991-2012 IEEE. |
Persistent Identifier | http://hdl.handle.net/10722/194449 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 2.520 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Huang, K | - |
dc.contributor.author | Larsson, E | - |
dc.date.accessioned | 2014-01-30T03:32:36Z | - |
dc.date.available | 2014-01-30T03:32:36Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | IEEE Transactions on Signal Processing, 2013, v. 61 n. 23, p. 5972-5986 | - |
dc.identifier.issn | 1053-587X | - |
dc.identifier.uri | http://hdl.handle.net/10722/194449 | - |
dc.description.abstract | Far-field microwave power transfer (MPT) will free wireless sensors and other mobile devices from the constraints imposed by finite battery capacities. Integrating MPT with wireless communications to support simultaneous wireless information and power transfer (SWIPT) allows the same spectrum to be used for dual purposes without compromising the quality of service. A novel approach is presented in this paper for realizing SWIPT in a broadband system where orthogonal frequency division multiplexing and transmit beamforming are deployed to create a set of parallel sub-channels for SWIPT, which simplifies resource allocation. Based on a proposed reconfigurable mobile architecture, different system configurations are considered by combining single-user/multi-user systems, downlink/uplink information transfer, and variable/fixed coding rates. Optimizing the power control for these configurations results in a new class of multi-user power-control problems featuring the circuit-power constraints, specifying that the transferred power must be sufficiently large to support the operation of the receiver circuitry. Solving these problems gives a set of power-control algorithms that exploit channel diversity in frequency for simultaneously enhancing the throughput and the MPT efficiency. For the system configurations with variable coding rates, the algorithms are variants of water-filling that account for the circuit-power constraints. The optimal algorithms for those configurations with fixed coding rates are shown to sequentially allocate mobiles their required power for decoding in ascending order until the entire budgeted power is spent. The required power for a mobile is derived as simple functions of the minimum signal-to-noise ratio for correct decoding, the circuit power and sub-channel gains. © 1991-2012 IEEE. | - |
dc.language | eng | - |
dc.relation.ispartof | IEEE Transactions on Signal Processing | - |
dc.subject | Cellular networks | - |
dc.subject | Energy harvesting | - |
dc.subject | Mobile communication | - |
dc.subject | Power control | - |
dc.subject | Power transmission | - |
dc.title | Simultaneous information and power transfer for broadband wireless systems | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/TSP.2013.2281026 | - |
dc.identifier.scopus | eid_2-s2.0-84888093326 | - |
dc.identifier.volume | 61 | - |
dc.identifier.issue | 23 | - |
dc.identifier.spage | 5972 | - |
dc.identifier.epage | 5986 | - |
dc.identifier.isi | WOS:000326942800014 | - |
dc.identifier.issnl | 1053-587X | - |