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Article: Performance study of 16-ary DEQAM modem for future satellite communication systems

TitlePerformance study of 16-ary DEQAM modem for future satellite communication systems
Authors
KeywordsTelecommunication links, satellite--modulation
16-ary DEQAM system
Non linear distortion
Predistortion
Regenerative satellite link
Issue Date1989
PublisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://interscience.wiley.com/jpages/1542-0973
Citation
International Journal of Satellite Communications, 1989, v. 7 n. 5, p. 413-423 How to Cite?
AbstractThis paper investigates the effects of additive white Gaussian noise (AWGN), adjacent-channel interference (ACI) and co-channel interference (CCI) combined with flat fading on the performance of bandlimited 16-ary differentially encoded quadrature amplitude modulation (16-ary DEQAM) signalling transmitted through a non-linear high-power amplifier (HPA). The signal-to-noise ratio (SNR) degradations at a specific bit error rate (BER) are evaluated for various values of channel roll-off factor α (channel bandwidth) and different degrees of output backoff (OBO) of the HPA in the presence of various combinations of the channel impairments. It is shown that by employing a baseband or RF predistortion technique for the HPA and selecting the best arrangement of channel roll-off factor, OBO value of the HPA and channel spacing, a good performance can be achieved regarding the most efficient use of bandwidth together with a minimum SNR degradation due to the presence of channel impairments. Thus, the use of 16-ary DEQAM for satellite communications is feasible in the near future.
Persistent Identifierhttp://hdl.handle.net/10722/164035
ISSN
2002 Impact Factor: 0.296
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCheung, SWen_US
dc.contributor.authorAghvami, AHen_US
dc.date.accessioned2012-09-20T07:54:57Z-
dc.date.available2012-09-20T07:54:57Z-
dc.date.issued1989en_US
dc.identifier.citationInternational Journal of Satellite Communications, 1989, v. 7 n. 5, p. 413-423en_US
dc.identifier.issn0737-2884-
dc.identifier.urihttp://hdl.handle.net/10722/164035-
dc.description.abstractThis paper investigates the effects of additive white Gaussian noise (AWGN), adjacent-channel interference (ACI) and co-channel interference (CCI) combined with flat fading on the performance of bandlimited 16-ary differentially encoded quadrature amplitude modulation (16-ary DEQAM) signalling transmitted through a non-linear high-power amplifier (HPA). The signal-to-noise ratio (SNR) degradations at a specific bit error rate (BER) are evaluated for various values of channel roll-off factor α (channel bandwidth) and different degrees of output backoff (OBO) of the HPA in the presence of various combinations of the channel impairments. It is shown that by employing a baseband or RF predistortion technique for the HPA and selecting the best arrangement of channel roll-off factor, OBO value of the HPA and channel spacing, a good performance can be achieved regarding the most efficient use of bandwidth together with a minimum SNR degradation due to the presence of channel impairments. Thus, the use of 16-ary DEQAM for satellite communications is feasible in the near future.-
dc.languageengen_US
dc.publisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://interscience.wiley.com/jpages/1542-0973-
dc.relation.ispartofInternational Journal of Satellite Communicationsen_US
dc.rightsInternational Journal of Satellite Communications. Copyright © John Wiley & Sons Ltd.-
dc.subjectTelecommunication links, satellite--modulation-
dc.subject16-ary DEQAM system-
dc.subjectNon linear distortion-
dc.subjectPredistortion-
dc.subjectRegenerative satellite link-
dc.titlePerformance study of 16-ary DEQAM modem for future satellite communication systemsen_US
dc.typeArticleen_US
dc.identifier.emailCheung, SW: swcheung@eee.hku.hken_US
dc.identifier.authorityCheung, SW=rp00102en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/sat.4600070506-
dc.identifier.scopuseid_2-s2.0-0024938842-
dc.identifier.hkuros208178en_US
dc.identifier.volume7en_US
dc.identifier.issue5-
dc.identifier.spage413en_US
dc.identifier.epage423en_US
dc.identifier.isiWOS:A1989CL11700005-
dc.publisher.placeUnited Kingdom-
dc.identifier.scopusauthoridCheung, SW=7202472784-
dc.identifier.scopusauthoridAghvami, AH=7006136339-

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