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  Patent History
  • Application
    US 09/607647 2000-06-30
  • Granted
    US 6847676 2005-01-25

granted patent: All-Lag Spread-Spectrum Correlators With Rotating References

TitleAll-Lag Spread-Spectrum Correlators With Rotating References
Granted PatentUS 6847676
Granted Date2005-01-25
Priority Date2000-06-30 US 09/607647
1999-06-30 US 09/141732P
Inventors
Issue Date2005
Citation
US Patent 6847676. Washington, DC: US Patent and Trademark Office (USPTO), 2005 How to Cite?
AbstractAn All-Lag Rotating-Reference Correlator Correlates A Received Spread-Spectrum Signal With A Rotating Reference Code, And Produces In Each Sampling Instance N Correlation Lags Corresponding To The Correlation Of The Received Signal With 0, 1, . . . , N-1 Lags (Or Delays) Of The Rotating Reference Code, Wherein N Is The Length Of The Rotating Reference Code. The Rotating Reference Code Is Time-Variant And Is Generated By A Rotation Of A Basic Reference Code. The Received Signal, Possibly Embedded In Noise And Interference, Consists Of Periodic Replicas Of The Basic Reference Code With Or Without Data Modulation. The First Embodiment Of The Present Invention Describes A Method And Apparatus Of An All-Lag Rotating-Reference Correlator Which Is Applicable To Situations Where Data Modulation Is Not Present In The Received Signal. The Second Embodiment Of The Present Invention Describes A Method And Apparatus Of An All-Lag Rotating-Reference Correlator Which Is Applicable For Situations Where Data Modulation Is Present In The Received Signal. Corresponding Methods And Apparatus Are Also Described When Only A Number Of Selected Correlation Lags Are Required To Be Generated. Each Apparatus Comprises Storage Means For Storing Spread-Spectrum Signal Samples, Subtraction Means, A Plurality Of Multiplication Means Each Of Which Computes The Multiplication Result For The Output Of Subtraction Means And An Element Of Rotating Reference Code, Storage Means For Storing Correlation Lags, And A Plurality Of Addition Means.
Persistent Identifierhttp://hdl.handle.net/10722/142125
References

 

DC FieldValueLanguage
dc.date.accessioned2011-10-19T06:30:02Z-
dc.date.available2011-10-19T06:30:02Z-
dc.date.issued2005-
dc.identifier.citationUS Patent 6847676. Washington, DC: US Patent and Trademark Office (USPTO), 2005en_HK
dc.identifier.urihttp://hdl.handle.net/10722/142125-
dc.description.abstractAn All-Lag Rotating-Reference Correlator Correlates A Received Spread-Spectrum Signal With A Rotating Reference Code, And Produces In Each Sampling Instance N Correlation Lags Corresponding To The Correlation Of The Received Signal With 0, 1, . . . , N-1 Lags (Or Delays) Of The Rotating Reference Code, Wherein N Is The Length Of The Rotating Reference Code. The Rotating Reference Code Is Time-Variant And Is Generated By A Rotation Of A Basic Reference Code. The Received Signal, Possibly Embedded In Noise And Interference, Consists Of Periodic Replicas Of The Basic Reference Code With Or Without Data Modulation. The First Embodiment Of The Present Invention Describes A Method And Apparatus Of An All-Lag Rotating-Reference Correlator Which Is Applicable To Situations Where Data Modulation Is Not Present In The Received Signal. The Second Embodiment Of The Present Invention Describes A Method And Apparatus Of An All-Lag Rotating-Reference Correlator Which Is Applicable For Situations Where Data Modulation Is Present In The Received Signal. Corresponding Methods And Apparatus Are Also Described When Only A Number Of Selected Correlation Lags Are Required To Be Generated. Each Apparatus Comprises Storage Means For Storing Spread-Spectrum Signal Samples, Subtraction Means, A Plurality Of Multiplication Means Each Of Which Computes The Multiplication Result For The Output Of Subtraction Means And An Element Of Rotating Reference Code, Storage Means For Storing Correlation Lags, And A Plurality Of Addition Means.en_HK
dc.relation.isreferencedbyUS 2008298499 (A1) 2008-12-04en_HK
dc.relation.isreferencedbyUS 8121181 (B2) 2012-02-21en_HK
dc.relation.isreferencedbyUS 2007230633 (A1) 2007-10-04en_HK
dc.relation.isreferencedbyUS 7680229 (B2) 2010-03-16en_HK
dc.relation.isreferencedbyUS 2005035904 (A1) 2005-02-17en_HK
dc.relation.isreferencedbyUS 7057553 (B2) 2006-06-06en_HK
dc.relation.isreferencedbyUS 7072618 (B1) 2006-07-04en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documents-
dc.titleAll-Lag Spread-Spectrum Correlators With Rotating Referencesen_HK
dc.typePatenten_US
dc.identifier.emailNg, Tung Sang:tsng@eee.hku.hken_US
dc.identifier.authorityNg, Tung Sang=rp00159en_US
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros102739en_US
dc.contributor.inventorNg, Tung Sangen_US
dc.contributor.inventorCheng, Chin Longen_US
dc.contributor.inventorYip, Kun Wahen_US
patents.identifier.applicationUS 09/607647en_HK
patents.identifier.grantedUS 6847676en_HK
patents.description.assigneeUniv Hong Kong [Hk]en_HK
patents.description.countryUnited States of Americaen_HK
patents.date.granted2005-01-25en_HK
dc.relation.referencesUS 5022047 (A) 1991-06-04en_HK
dc.relation.referencesUS 6198765 (B1) 2001-03-06en_HK
dc.relation.referencesUS 6208291 (B1) 2001-03-27en_HK
dc.relation.referencesUS 6289041 (B1) 2001-09-11en_HK
dc.relation.referencesUS 6330292 (B1) 2001-12-11en_HK
dc.relation.referencesUS 6611512 (B1) 2003-08-26en_HK
patents.identifier.hkutechidEEE-1999-00027-1en_US
patents.date.application2000-06-30en_HK
patents.date.priority2000-06-30 US 09/607647en_HK
patents.date.priority1999-06-30 US 09/141732Pen_HK
patents.description.ccUSen_HK
patents.relation.familyUS 6847676 (B1) 2005-01-25en_HK
patents.relation.familyUS 6868115 (B1) 2005-03-15en_HK
patents.description.kindB1en_HK
patents.typePatent_granteden_HK

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