Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2006-03-14
2006-03-14
Phunkulh, Bob A. (Department: 2661)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C375S344000
Reexamination Certificate
active
07012881
ABSTRACT:
A timing and frequency offset estimation method for OFDM use an analytic tone in calculating timing offset estimation and a frequency offset estimation. An analytic tone includes a signal that contains only one subcarrier and has characteristics of a uniform magnitude and a uniform phase rotation. The estimation algorithm with an analytic tone is based correlation function. By changing the interval between two samples in correlation, the maximum estimation range for the frequency offset can be extended to ±N/2 subcarrier spacing, where N is the number of total subcarriers. Thus, the frequency synchronization scheme for OFDM systems has a wider range and a more simple complexity than traditional ones requiring separate fine and coarse synchronization.
REFERENCES:
patent: 5802117 (1998-09-01), Ghosh
patent: 5991289 (1999-11-01), Huang et al.
patent: 6021110 (2000-02-01), McGibney
patent: 6058101 (2000-05-01), Huang et al.
patent: 6198782 (2001-03-01), De Courville et al.
patent: 6285654 (2001-09-01), Marchok et al.
patent: 6332008 (2001-12-01), Giallorenzi et al.
patent: 6353642 (2002-03-01), Asahara et al.
patent: 6363084 (2002-03-01), Dejonghe
patent: 6373861 (2002-04-01), Lee
patent: 6393073 (2002-05-01), Eilts
patent: 6400782 (2002-06-01), Tal et al.
patent: 6418158 (2002-07-01), Vishwanath et al.
patent: 6470030 (2002-10-01), Park et al.
patent: 6487252 (2002-11-01), Kleider et al.
patent: 6538986 (2003-03-01), Isaksson et al.
patent: 6539063 (2003-03-01), Peyla et al.
patent: 6614864 (2003-09-01), Raphaeli et al.
patent: 6643336 (2003-11-01), Hsieh et al.
patent: 6647066 (2003-11-01), Szajnowski
patent: 6678339 (2004-01-01), Lashkarian
patent: 6714511 (2004-03-01), Sudo et al.
patent: 6765969 (2004-07-01), Vook et al.
patent: 6807241 (2004-10-01), Milbar et al.
patent: 6891792 (2005-05-01), Cimini et al.
patent: 2002/0065047 (2002-05-01), Moose
patent: WO 00/77961 (2000-12-01), None
Phunkulh Bob A.
Samsung Electronic Co. Ltd.
Sughrue & Mion, PLLC
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