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  Patent History
  • Application
    US 09/761397 2001-01-16
  • Granted
    US 6831942 2001-10-25
  Patent Family

granted patent: MPSK spread spectrum communications receiver with carrier recovery and tracking using weighted correlation techniques

TitleMPSK spread spectrum communications receiver with carrier recovery and tracking using weighted correlation techniques
Granted PatentUS 6831942
US 20010033608
Granted Date2001-10-25
Priority Date2001-01-16 US 09/761397
2000-01-14 US 09/176441P
Inventors
Issue Date2001
Citation
US Patent US 20010033608. Washington, DC: US Patent and Trademark Office (USPTO), 2001 How to Cite?
AbstractA multiple phase shift keying (MPSK) spread spectrum communications receiver uses weighted correlation techniques for carrier recovery and tracking. The receiver includes three subsystems: a synchronization system, a carrier tracking system, and a data demodulation system. To demodulate the received signal, the receiver requires a carrier frequency that matches the frequency of an associated transmitter as well as the sampling (or chip) and symbol clocks that are synchronized with those of the transmitter. In the disclosed receiver, the carrier tracking subsystem continually tracks the carrier frequency of the received signal using a tracking scheme that uses weighted correlation techniques. The weighted correlation technique combines signals from two correlator modules, an R-correlator module and a W-correlator module, to generate the correlation output.; The R-correlator is similar to conventional correlators. The W-correlator, however, is unlike conventional correlators. Each product term of the correlation is weighted by a sampling index within a symbol period and then summed to obtain a weighted correlation value. The receiver has a tracking range that is twice the symbol rate and the tracking range is independent of the number of keying phases M.
Persistent Identifierhttp://hdl.handle.net/10722/210527
References

 

DC FieldValueLanguage
dc.date.accessioned2015-06-17T07:04:01Z-
dc.date.available2015-06-17T07:04:01Z-
dc.date.issued2001-
dc.identifier.citationUS Patent US 20010033608. Washington, DC: US Patent and Trademark Office (USPTO), 2001-
dc.identifier.urihttp://hdl.handle.net/10722/210527-
dc.description.abstractA multiple phase shift keying (MPSK) spread spectrum communications receiver uses weighted correlation techniques for carrier recovery and tracking. The receiver includes three subsystems: a synchronization system, a carrier tracking system, and a data demodulation system. To demodulate the received signal, the receiver requires a carrier frequency that matches the frequency of an associated transmitter as well as the sampling (or chip) and symbol clocks that are synchronized with those of the transmitter. In the disclosed receiver, the carrier tracking subsystem continually tracks the carrier frequency of the received signal using a tracking scheme that uses weighted correlation techniques. The weighted correlation technique combines signals from two correlator modules, an R-correlator module and a W-correlator module, to generate the correlation output.; The R-correlator is similar to conventional correlators. The W-correlator, however, is unlike conventional correlators. Each product term of the correlation is weighted by a sampling index within a symbol period and then summed to obtain a weighted correlation value. The receiver has a tracking range that is twice the symbol rate and the tracking range is independent of the number of keying phases M.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License for public patent documents-
dc.titleMPSK spread spectrum communications receiver with carrier recovery and tracking using weighted correlation techniques-
dc.typePatent-
dc.identifier.authorityNG TUNG SANG=rp00159-
dc.description.naturepublished_or_final_version-
dc.contributor.inventorGUO DONGHAI-
dc.contributor.inventorHU AIQUN-
dc.contributor.inventorNG TUNG SANG-
patents.identifier.applicationUS 09/761397-
patents.identifier.grantedUS 6831942-
patents.identifier.grantedUS 20010033608-
patents.description.assigneeGUO DONGHAI, ; HU AIQUN, ; NG TUNG SANG, ; UNIVERSITY OF HONG KONG-
patents.description.countryUnited States of America -
patents.date.granted2001-10-25-
dc.relation.referencesUS 5793796 (A) 1998-08-11-
dc.relation.referencesUS 6693951 (B1) 2004-02-17-
dc.relation.referencesUS 6229843 (B1) 2001-05-08-
dc.relation.referencesUS 6160841 (A) 2000-12-12-
patents.identifier.hkutechidEEE-2000-00022-1-
patents.date.application2001-01-16-
patents.date.priority2001-01-16 US 09/761397-
patents.date.priority2000-01-14 US 09/176441P-
patents.description.ccus-
patents.relation.family U S6831942 (B2) 2004-12-14-
patents.description.kindA1-
patents.typePatent_granted-

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