Frequency Error Estimation And Correction
and accumulated with respect to a received complex signal over a certain time period. These transitions may then be compared in order to obtain information indicative of both a magnitude and phase of a carrier frequency error for the received...http://www.google.ch/patents/US7764937?utm_source=gb-gplus-sharePatent US7764937 - Frequency error estimation and correction Erweiterte PatentsucheTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents. VeröffentlichungsnummerUS7764937 B2PublikationstypErteilung AnmeldenummerUS 12/235,757 Veröffentlichungsdatum27. Juli 2010Eingetragen23. Sept. 2008 Prioritätsdatum22. Mai 2002GebührenstatusBezahltAuch http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,764,937.PN.&OS=PN/7,764,937&RS=PN/7,764,937&trk=prof-patent-title-link veröffentlicht unterDE60327460D1, EP1389860A2, EP1389860A3, EP1566933A2, EP1566933A3, EP1566933B1, EP1848169A1, US7075948, US7430402, US20030220084, US20060246865, US20090017768 Veröffentlichungsnummer12235757, 235757, US 7764937 B2, US 7764937B2, US-B2-7764937, US7764937 B2, US7764937B2 ErfinderAleksej MakarovUrsprünglich BevollmächtigterStmicroelectronics, Inc.Zitat exportierenBiBTeX, EndNote, RefManPatentzitate (31), Nichtpatentzitate (9), Klassifizierungen (27), Juristische Ereignisse (3) Externe Links:USPTO, USPTO-Zuordnung, EspacenetFrequency error estimation http://www.google.ch/patents/US7764937 and correction US 7764937 B2 Zusammenfassung Counter-clockwise and clockwise quadrant transitions are detected and accumulated with respect to a received complex signal over a certain time period. These transitions may then be compared in order to obtain information indicative of both a magnitude and phase of a carrier frequency error for the received signal. Additionally, zero-crossings of the received complex signal over the same certain time period are detected and accumulated. The accumulated crossings provide information indicative of frequency offset magnitude. The determined magnitude and phase of the frequency error may then be used to adjust a local oscillator frequency to provide for improved receiver performance. Bilder(7) Ansprüche(21) 1. A frequency error system for measuring a sign and magnitude of a carrier frequency error in a received complex signal, comprising: a
down-converted in frequency and then converted into a digital signal. The samples of the digital signal are processed to estimate http://www.google.ch/patents/US20080130729 the information conveyed by the communications signal. The estimated information is then used with knowledge...http://www.google.ch/patents/US20080130729?utm_source=gb-gplus-sharePatent US20080130729 - Frequency Error Correction by Using Remodulation Erweiterte PatentsucheTry the new Google Patents, with machine-classified Google Scholar results, frequency error and Japanese and South Korean patents. VeröffentlichungsnummerUS20080130729 A1PublikationstypAnmeldung AnmeldenummerUS 11/662,574 PCT-NummerPCT/GB2005/003486 Veröffentlichungsdatum5. Juni 2008Eingetragen9. Sept. 2005 Prioritätsdatum10. Sept. 2004Auch veröffentlicht unterCN101015182A, EP1787446A1, EP1787446B1, US8139681, WO2006027604A1 Veröffentlichungsnummer11662574, 662574, PCT/2005/3486, PCT/GB/2005/003486, PCT/GB/2005/03486, PCT/GB/5/003486, PCT/GB/5/03486, PCT/GB2005/003486, PCT/GB2005/03486, frequency error estimation PCT/GB2005003486, PCT/GB200503486, PCT/GB5/003486, PCT/GB5/03486, PCT/GB5003486, PCT/GB503486, US 2008/0130729 A1, US 2008/130729 A1, US 20080130729 A1, US 20080130729A1, US 2008130729 A1, US 2008130729A1, US-A1-20080130729, US-A1-2008130729, US2008/0130729A1, US2008/130729A1, US20080130729 A1, US20080130729A1, US2008130729 A1, US2008130729A1 ErfinderJames Chapman, Simon Richardson, Cyril Valadon, Navid Fatemi-GhomiUrsprünglich BevollmächtigterJames Chapman, Simon Richardson, Cyril Valadon, Navid Fatemi-GhomiZitat exportierenBiBTeX, EndNote, RefManPatentzitate (10), Referenziert von (6), Klassifizierungen (13), Juristische Ereignisse (4) Externe Links:USPTO, USPTO-Zuordnung, EspacenetFrequency Error Correction by Using Remodulation US 20080130729 A1 Zusammenfassung A communications signal is received through a propagation channel, down-converted in frequency and then converted into a digital signal. The samples of the digital signal are proc
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