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- Publisher Website: 10.1109/PIMRC.2009.5449718
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Conference Paper: An RF predistorter for base station HPAs of NADC system
Title | An RF predistorter for base station HPAs of NADC system |
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Authors | |
Keywords | Adjacent-channel-power ratio (ACPR) Constellation Eye diagram High power amplifier Mixer pi/4-DQPSK RF analog predistorter |
Issue Date | 2009 |
Publisher | IEEE. 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? |
Abstract | This 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 Identifier | http://hdl.handle.net/10722/124732 |
ISBN | |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Xiao, MX | en_HK |
dc.contributor.author | Cheung, SW | en_HK |
dc.contributor.author | Yuk, TI | en_HK |
dc.date.accessioned | 2010-10-31T10:50:59Z | - |
dc.date.available | 2010-10-31T10:50:59Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | Ieee International Symposium On Personal, Indoor And Mobile Radio Communications, Pimrc, 2009 | en_HK |
dc.identifier.isbn | 9781424451227 | - |
dc.identifier.uri | http://hdl.handle.net/10722/124732 | - |
dc.description.abstract | This 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.language | eng | en_HK |
dc.publisher | IEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000550 | - |
dc.relation.ispartof | IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC | en_HK |
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.subject | Adjacent-channel-power ratio (ACPR) | en_HK |
dc.subject | Constellation | en_HK |
dc.subject | Eye diagram | en_HK |
dc.subject | High power amplifier | en_HK |
dc.subject | Mixer | en_HK |
dc.subject | pi/4-DQPSK | en_HK |
dc.subject | RF analog predistorter | en_HK |
dc.title | An RF predistorter for base station HPAs of NADC system | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.openurl | http://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.email | Cheung, SW:swcheung@eee.hku.hk | en_HK |
dc.identifier.email | Yuk, TI:tiyuk@eee.hku.hk | en_HK |
dc.identifier.authority | Cheung, SW=rp00102 | en_HK |
dc.identifier.authority | Yuk, TI=rp00210 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1109/PIMRC.2009.5449718 | en_HK |
dc.identifier.scopus | eid_2-s2.0-77952803586 | en_HK |
dc.identifier.hkuros | 180335 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-77952803586&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.spage | 1587 | - |
dc.identifier.epage | 1591 | - |
dc.identifier.isi | WOS:000305824601119 | - |
dc.identifier.scopusauthorid | Xiao, MX=26422653600 | en_HK |
dc.identifier.scopusauthorid | Cheung, SW=7202472784 | en_HK |
dc.identifier.scopusauthorid | Yuk, TI=6603685705 | en_HK |