Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Gregorio, Fernando
dc.contributor.author Cousseau, Juan
dc.contributor.author Werner, Stefan
dc.contributor.author Riihonen, Taneli
dc.contributor.author Wichman, Risto
dc.date.accessioned 2017-11-21T13:35:01Z
dc.date.available 2017-11-21T13:35:01Z
dc.date.issued 2011
dc.identifier.citation Gregorio , F , Cousseau , J , Werner , S , Riihonen , T & Wichman , R 2011 , ' Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters ' EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING , vol 2011 , no. 19 , pp. 1-15 . DOI: 10.1186/1687-6180-2011-19 en
dc.identifier.issn 1687-6172
dc.identifier.issn 1687-6180
dc.identifier.other PURE UUID: 232046be-fd1b-49f9-8559-eb613a26a02f
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/power-amplifier-linearization-technique-with-iq-imbalance-and-crosstalk-compensation-for-broadband-mimoofdm-transmitters(232046be-fd1b-49f9-8559-eb613a26a02f).html
dc.identifier.other PURE LINK: http://asp.eurasipjournals.com/content/2011/1/59
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/16050565/1687_6180_2011_19.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/28767
dc.description.abstract The design of predistortion techniques for broadband multiple input multiple output-OFDM (MIMO-OFDM) systems raises several implementation challenges. First, the large bandwidth of the OFDM signal requires the introduction of memory effects in the PD model. In addition, it is usual to consider an imbalanced in-phase and quadrature (IQ) modulator to translate the predistorted baseband signal to RF. Furthermore, the coupling effects, which occur when the MIMO paths are implemented in the same reduced size chipset, cannot be avoided in MIMO transceivers structures. This study proposes a MIMO-PD system that linearizes the power amplifier response and compensates nonlinear crosstalk and IQ imbalance effects for each branch of the multiantenna system. Efficient recursive algorithms are presented to estimate the complete MIMO-PD coefficients. The algorithms avoid the high computational complexity in previous solutions based on least squares estimation. The performance of the proposed MIMO-PD structure is validated by simulations using a two-transmitter antenna MIMO system. Error vector magnitude and adjacent channel power ratio are evaluated showing significant improvement compared with conventional MIMO-PD systems. en
dc.format.extent 1-15
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING en
dc.relation.ispartofseries Volume 2011, issue 19 en
dc.rights openAccess en
dc.subject.other 213 Electronic, automation and communications engineering, electronics en
dc.subject.other 113 Computer and information sciences en
dc.subject.other 114 Physical sciences en
dc.subject.other 111 Mathematics en
dc.title Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Risto Wichman Group
dc.contributor.department Department of Signal Processing and Acoustics en
dc.subject.keyword RF impairments; MIMO; predistortion; nonlinear crosstalk
dc.subject.keyword RF impairments
dc.subject.keyword MIMO
dc.subject.keyword predistortion
dc.subject.keyword nonlinear crosstalk
dc.subject.keyword 213 Electronic, automation and communications engineering, electronics
dc.subject.keyword 113 Computer and information sciences
dc.subject.keyword 114 Physical sciences
dc.subject.keyword 111 Mathematics
dc.identifier.urn URN:NBN:fi:aalto-201711217588
dc.identifier.doi 10.1186/1687-6180-2011-19
dc.type.version publishedVersion


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