Sub-Band Digital Predistortion for Noncontiguous Carriers: Implementation and Testing

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dc.contributor.advisorCavallaro, Joseph
dc.creatorTarver, Chance A
dc.date.accessioned2017-08-03T14:47:38Z
dc.date.available2017-08-03T14:47:38Z
dc.date.created2016-05
dc.date.issued2016-04-22
dc.date.submittedMay 2016
dc.date.updated2017-08-03T14:47:39Z
dc.description.abstractTo facilitate increasing data-rate demands and spectrum scarcity, non-contiguous transmission schemes are becoming more popular. However the non-contiguous carriers of such schemes intermodulate due to the nonlinear nature of power amplifiers (PAs). This may cause emissions which interfere with nearby channels or with one's own receiver in a frequency division duplexing transceiver. We implement a low-complexity, sub-band, block-adaptive, digital predistortion (DPD) solution that corrects the distortion in a real PA. Using WARPLab we correct up to ninth-order nonlinearities, and using a real-time FPGA design we correct up to third-order nonlinearities. This is done by targeting the most problematic spurious distortion components at the PA output and performing least mean squares training to adapt an inverse spur to inject. This sub-band method allows for reduced processing complexity over other full-band predistortion solutions. Using these techniques, we are able to suppress spurious emissions in WARP by over 20 dB.
dc.format.mimetypeapplication/pdf
dc.identifier.citationTarver, Chance A. "Sub-Band Digital Predistortion for Noncontiguous Carriers: Implementation and Testing." (2016) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/96532">https://hdl.handle.net/1911/96532</a>.
dc.identifier.urihttps://hdl.handle.net/1911/96532
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectDigital Predistortion
dc.subjectLTE
dc.subjectWireless
dc.subjectcarrier aggregation
dc.subjectFPGA
dc.subjectpower amplifier nonlinearity
dc.titleSub-Band Digital Predistortion for Noncontiguous Carriers: Implementation and Testing
dc.typeThesis
dc.type.materialText
thesis.degree.departmentElectrical and Computer Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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