Full-duplex amplify-and-forward relays with optimized transmission power under imperfect transceiver electronics

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author González, Gustavo J.
dc.contributor.author Gregorio, Fernando H.
dc.contributor.author Cousseau, Juan E.
dc.contributor.author Riihonen, Taneli
dc.contributor.author Wichman, Risto
dc.date.accessioned 2017-05-11T07:35:54Z
dc.date.available 2017-05-11T07:35:54Z
dc.date.issued 2017-12-01
dc.identifier.citation González , G J , Gregorio , F H , Cousseau , J E , Riihonen , T & Wichman , R 2017 , ' Full-duplex amplify-and-forward relays with optimized transmission power under imperfect transceiver electronics ' EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING , vol 2017 , no. 1 , 76 . DOI: 10.1186/s13638-017-0863-x en
dc.identifier.issn 1687-1472
dc.identifier.issn 1687-1499
dc.identifier.other PURE UUID: 6192893d-59c5-4619-8b67-7a340a012962
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/fullduplex-amplifyandforward-relays-with-optimized-transmission-power-under-imperfect-transceiver-electronics(6192893d-59c5-4619-8b67-7a340a012962).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85017827969&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/12974572/gonzalez_et_al_eurasip.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/25551
dc.description.abstract In-band full-duplex (FD) relays are useful for extending coverage areas and increasing overall throughput in wireless networks. The main technical difficulty hindering their implementation and use is their inherent self-interference (SI), generated due to simultaneous in-band reception and forwarding. Efficient SI mitigation is a practical necessity, and the imperfections in transceiver electronics, from which power amplifier (PA) non-linearity is one of the most serious phenomena, have to be taken into account in order to not limit the performance of such techniques. The magnitude of the distortion introduced by the PA depends on the relay input back-off (IBO) whose optimization for alleviating the effect of PA non-linearity is the main research objective in this paper. In particular, although plain signal-to-noise ratio (SNR) at the destination obviously increases when the IBO decreases, increased transmit power also strengthens the non-linear distortion leading to decreasing overall signal-to-interference-plus-noise ratio (SINR). We develop expressions for bounding the optimal IBO setting that maximizes the SINR at the destination, considering all relevant hardware impairments and SI cancellation with I/Q imbalance compensation. We provide closed-form solutions for the soft-limiter PA model and numerical results for more general PA models. Finally, the derived IBO bounds are compared with the numerical maximization of the SINR and the minimization of the bit-error rate (BER) to demonstrate that the theoretical bound settings provide good approximations to the optimal one. en
dc.format.extent 12
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Volume 2017, issue 1 en
dc.rights openAccess en
dc.subject.other Signal Processing en
dc.subject.other Computer Science Applications en
dc.subject.other Computer Networks and Communications en
dc.subject.other 113 Computer and information sciences en
dc.title Full-duplex amplify-and-forward relays with optimized transmission power under imperfect transceiver electronics en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Universidad Nacional del Sur
dc.contributor.department Department of Signal Processing and Acoustics
dc.subject.keyword In-band full-duplex wireless communication
dc.subject.keyword Non-regenerative relays
dc.subject.keyword Optimization
dc.subject.keyword Self-interference cancellation
dc.subject.keyword Transceiver hardware impairments
dc.subject.keyword Signal Processing
dc.subject.keyword Computer Science Applications
dc.subject.keyword Computer Networks and Communications
dc.subject.keyword 113 Computer and information sciences
dc.identifier.urn URN:NBN:fi:aalto-201705113935
dc.identifier.doi 10.1186/s13638-017-0863-x
dc.type.version publishedVersion

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