I/Q Imbalance Compensation in Quadrature Modulators

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atmire.migration.oldid4970
dc.contributor.advisorGhannouchi, Fadhel
dc.contributor.advisorHelaoui, Mohamed
dc.contributor.authorBhardwaj, Aparna Bhisham Chander
dc.contributor.committeememberFapojuwo, Abraham
dc.contributor.committeememberYanushkevich, Svetlana
dc.date.accessioned2016-09-29T16:49:13Z
dc.date.available2016-09-29T16:49:13Z
dc.date.issued2016
dc.date.submitted2016en
dc.description.abstractTransmitter architectures in radio and wireless communications are highly susceptible to gain and phase imbalances triggered by the analog quadrature modulator. An efficient yet, simple adaptive approach for estimating these impairments has been proposed comparing the instantaneous powers of the output and input signal without interrupting the transmission mode using a batch-gradient descent algorithm. The proposed methodology is tested for different values of I/Q imbalances and different batch-size in both simulations and on hardware platform. The technique shows a significant suppression of image with an image to signal ratio as low as 50 dB for a batch-size as low as 1000-1500 with the inclusion of noise (Signal-to-noise ratio = 60 dB). The simulation and hardware results at a carrier frequency of 2.14 GHz validate the effectiveness of the proposed approach. The results have been compared with a state-of-the-art method in literature and show improved results, robustness with lesser computational complexity.en_US
dc.identifier.citationBhardwaj, A. B. (2016). I/Q Imbalance Compensation in Quadrature Modulators (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26673en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26673
dc.identifier.urihttp://hdl.handle.net/11023/3358
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEngineering--Electronics and Electrical
dc.titleI/Q Imbalance Compensation in Quadrature Modulators
dc.typemaster thesis
thesis.degree.disciplineElectrical and Computer Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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