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Conference Paper: An RF predistorter for base station HPAs of NADC system

TitleAn RF predistorter for base station HPAs of NADC system
Authors
KeywordsAdjacent-channel-power ratio (ACPR)
Constellation
Eye diagram
High power amplifier
Mixer
pi/4-DQPSK
RF analog predistorter
Issue Date2009
PublisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000550
Citation
Ieee International Symposium On Personal, Indoor And Mobile Radio Communications, Pimrc, 2009 How to Cite?
AbstractThis paper presents the design of an effective and low cost RF predistorter for use in the base-station high power amplifiers (HPAs) of the North American Digital Cellular (NADC) system. A complex polynomial is used to model the characteristic of the HPA and the predistorter generates the inband intermodulation (IM) products required for predistortion of the HPA. The design of the predistorter has a simple structure, using Schottky diodes as the nonlinear device to generate the inband IM products. Experimental results using a practical HPA show that the predistorter can reduce the adjacent-channel-power ratio (ACPR) of the pi/4-DQPSK signal used in the NADC system by 20 dB at an HPA output power level of 30 W. Moreover, the constellation and eye diagrams of the pi/4-DQPSK signal show that the predistorter can also reduce the signal distortion caused by the HPA. ©2009 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/124732
ISBN
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXiao, MXen_HK
dc.contributor.authorCheung, SWen_HK
dc.contributor.authorYuk, TIen_HK
dc.date.accessioned2010-10-31T10:50:59Z-
dc.date.available2010-10-31T10:50:59Z-
dc.date.issued2009en_HK
dc.identifier.citationIeee International Symposium On Personal, Indoor And Mobile Radio Communications, Pimrc, 2009en_HK
dc.identifier.isbn9781424451227-
dc.identifier.urihttp://hdl.handle.net/10722/124732-
dc.description.abstractThis paper presents the design of an effective and low cost RF predistorter for use in the base-station high power amplifiers (HPAs) of the North American Digital Cellular (NADC) system. A complex polynomial is used to model the characteristic of the HPA and the predistorter generates the inband intermodulation (IM) products required for predistortion of the HPA. The design of the predistorter has a simple structure, using Schottky diodes as the nonlinear device to generate the inband IM products. Experimental results using a practical HPA show that the predistorter can reduce the adjacent-channel-power ratio (ACPR) of the pi/4-DQPSK signal used in the NADC system by 20 dB at an HPA output power level of 30 W. Moreover, the constellation and eye diagrams of the pi/4-DQPSK signal show that the predistorter can also reduce the signal distortion caused by the HPA. ©2009 IEEE.-
dc.languageengen_HK
dc.publisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000550-
dc.relation.ispartofIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRCen_HK
dc.rightsIEEE International Symposium on Personal, Indoor and Mobile Radio Communications. Copyright © IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.subjectAdjacent-channel-power ratio (ACPR)en_HK
dc.subjectConstellationen_HK
dc.subjectEye diagramen_HK
dc.subjectHigh power amplifieren_HK
dc.subjectMixeren_HK
dc.subjectpi/4-DQPSKen_HK
dc.subjectRF analog predistorteren_HK
dc.titleAn RF predistorter for base station HPAs of NADC systemen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=9781424451227&volume=&spage=1587&epage=1591 &date=2009&atitle=An+RF+predistorter+for+base+station+HPAs+of+NADC+system-
dc.identifier.emailCheung, SW:swcheung@eee.hku.hken_HK
dc.identifier.emailYuk, TI:tiyuk@eee.hku.hken_HK
dc.identifier.authorityCheung, SW=rp00102en_HK
dc.identifier.authorityYuk, TI=rp00210en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/PIMRC.2009.5449718en_HK
dc.identifier.scopuseid_2-s2.0-77952803586en_HK
dc.identifier.hkuros180335en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77952803586&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage1587-
dc.identifier.epage1591-
dc.identifier.isiWOS:000305824601119-
dc.identifier.scopusauthoridXiao, MX=26422653600en_HK
dc.identifier.scopusauthoridCheung, SW=7202472784en_HK
dc.identifier.scopusauthoridYuk, TI=6603685705en_HK

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