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Article: Performance of a 16-ARY DEQAM modem employing a baseband or RF predistorter over a regenerative satellite link

TitlePerformance of a 16-ARY DEQAM modem employing a baseband or RF predistorter over a regenerative satellite link
Authors
Cheung, SWAghvami, AH
KeywordsDigital communication systems
Radiocommunication
Satellite links
Issue Date1988
Citation
Iee Proceedings. Part F. Communications, Radar And Signal Processing, 1988, v. 135 -F n. 6, p. 547-557 How to Cite?
AbstractThe paper presents the results of a series of computer-simulation tests that determine the effects of bandlimiting (nonlinear distortion with and without predistortion) on the tolerance to additive white Gaussian noise of a digital modem. The modem transmits a 16-ary differentially encoded quadrature amplitude modulation (16-ary DEQAM) signal over a regenerative satellite link, where the high power amplifier (HPA) on board the satellite transmitter may introduce AM-AM and AM-PM conversion effects into the 16-ary DEQAM signal. Four different bandwidths of the transmitted signal are tested, together with different levels of output back-off in the HPA at the transmitter. The arrangements achieving the most efficient use of the power are selected. The results show that a surprisingly good improvement in performance can be achieved by using predistortion of the 16-ary DEQAM signal to reduce the nonlinear distortion of the high power amplifier.
Persistent Identifierhttp://hdl.handle.net/10722/154881
ISSN
0143-7070
ISI Accession Number ID
WOS:A1988R219700008

 

DC FieldValueLanguage
dc.contributor.authorCheung, SWen_US
dc.contributor.authorAghvami, AHen_US
dc.date.accessioned2012-08-08T08:31:01Z-
dc.date.available2012-08-08T08:31:01Z-
dc.date.issued1988en_US
dc.identifier.citationIee Proceedings. Part F. Communications, Radar And Signal Processing, 1988, v. 135 -F n. 6, p. 547-557en_US
dc.identifier.issn0143-7070en_US
dc.identifier.urihttp://hdl.handle.net/10722/154881-
dc.description.abstractThe paper presents the results of a series of computer-simulation tests that determine the effects of bandlimiting (nonlinear distortion with and without predistortion) on the tolerance to additive white Gaussian noise of a digital modem. The modem transmits a 16-ary differentially encoded quadrature amplitude modulation (16-ary DEQAM) signal over a regenerative satellite link, where the high power amplifier (HPA) on board the satellite transmitter may introduce AM-AM and AM-PM conversion effects into the 16-ary DEQAM signal. Four different bandwidths of the transmitted signal are tested, together with different levels of output back-off in the HPA at the transmitter. The arrangements achieving the most efficient use of the power are selected. The results show that a surprisingly good improvement in performance can be achieved by using predistortion of the 16-ary DEQAM signal to reduce the nonlinear distortion of the high power amplifier.en_US
dc.languageengen_US
dc.relation.ispartofIEE proceedings. Part F. Communications, radar and signal processingen_US
dc.subjectDigital communication systems-
dc.subjectRadiocommunication-
dc.subjectSatellite links-
dc.titlePerformance of a 16-ARY DEQAM modem employing a baseband or RF predistorter over a regenerative satellite linken_US
dc.typeArticleen_US
dc.identifier.emailCheung, SW:swcheung@eee.hku.hken_US
dc.identifier.authorityCheung, SW=rp00102en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0024140260en_US
dc.identifier.volume135 -Fen_US
dc.identifier.issue6en_US
dc.identifier.spage547en_US
dc.identifier.epage557en_US
dc.identifier.isiWOS:A1988R219700008-
dc.identifier.scopusauthoridCheung, SW=7202472784en_US
dc.identifier.scopusauthoridAghvami, AH=7006136339en_US
dc.identifier.issnl0143-7070-

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