Transmitter IQ Imbalance Mitigation and PA Linearization in Software Defined Radios

Simple item page
dc.contributor.authorJovanovic, Borisav
dc.contributor.authorMilenkovic, Srdan
dc.coverage.issue1cs
dc.coverage.volume31cs
dc.date.accessioned2022-04-29T07:44:22Z
dc.date.available2022-04-29T07:44:22Z
dc.date.issued2022-04cs
dc.description.abstractRadio frequency (RF) power amplifiers (PA) are efficiently linearized by adaptive digital predistortion (DPD). However, performance of DPD is severely degraded in presence of transmitter’s frequency-selective in-phase/quadrature (I/Q) imbalance. We propose DPD/IQ method that compensates the effects of transmitter I/Q imbalance and PA nonlinearity, which is dedicated for implementation in low-cost software radio defined (SDR) cellular base stations. The advantage of DPD/IQ is low complexity in terms of reduced number of DPD coefficients which provides significant savings of FPGA resources. The DPD/IQ has been evaluated after method has been implemented in SDR board. Measured results clearly demonstrate efficient compensation of PA and transceiver impairments enabling transmission of wide bandwidth waveforms and realization of sophisticated modulation schemes. Improvement in image rejection ratio of 10-15dB is achieved. Considering compensation of PA nonlinearities, the ACPR at PA output is decreased by 15dBc.en
dc.formattextcs
dc.format.extent144-154cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2022 vol. 31, č. 1, s. 144-154. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2022.0144en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/204142
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2022/22_01_0144_0154.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectFrequency dependent I/Q imbalanceen
dc.subjectdigital predistortionen
dc.subjectmemory polynomialen
dc.subjectpower amplifieren
dc.subjectPA linearizationen
dc.titleTransmitter IQ Imbalance Mitigation and PA Linearization in Software Defined Radiosen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
22_01_0144_0154.pdf
Size:
645.48 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
2022/1