Pulse or digital communications – Receivers – Automatic frequency control
Reexamination Certificate
2004-11-10
2009-08-04
Perilla, Jason M. (Department: 2611)
Pulse or digital communications
Receivers
Automatic frequency control
C375S316000, C375S346000, C375S324000, C375S327000
Reexamination Certificate
active
07570722
ABSTRACT:
A system comprises a receiver module that receives a signal that is modulated using coherent orthogonal frequency division multiplexing (OFDM) modulation. A signal to noise ratio (SNR) module communicates with the receiver module and generates a SNR estimate based on the OFDM signal. An estimator module communicates with the SNR module and estimates carder frequency offset (CFO) based on the SNR estimate. System for orthogonal frequency division multiplexing (OFDM) signals such as frequency differential demodulation and time differential demodulation are also described.
REFERENCES:
patent: 5170415 (1992-12-01), Yoshida et al.
patent: 5471508 (1995-11-01), Koslov
patent: 5627861 (1997-05-01), Kataoka
patent: 5715240 (1998-02-01), Borras et al.
patent: 5790604 (1998-08-01), Kelton et al.
patent: 5940450 (1999-08-01), Koslov et al.
patent: 5987084 (1999-11-01), Farmer
patent: 6178194 (2001-01-01), Vasic
patent: 6304545 (2001-10-01), Armbruster et al.
patent: 6389066 (2002-05-01), Ejzak
patent: 6438183 (2002-08-01), Taura et al.
patent: 6570910 (2003-05-01), Bottomley et al.
patent: 6647078 (2003-11-01), Thomas et al.
patent: 6888809 (2005-05-01), Foschini et al.
patent: 6937671 (2005-08-01), Samarasooriya
patent: 6940914 (2005-09-01), Lo et al.
patent: 6983028 (2006-01-01), Ahn
patent: 7110473 (2006-09-01), Miller et al.
patent: 7173979 (2007-02-01), Badri et al.
patent: 7173990 (2007-02-01), Kim et al.
patent: 7200185 (2007-04-01), Thesling et al.
patent: 7206349 (2007-04-01), Linnartz et al.
patent: 7251273 (2007-07-01), Hwang et al.
patent: 7251282 (2007-07-01), Maltsev et al.
patent: 7266162 (2007-09-01), Jiang
patent: 7277493 (2007-10-01), Lai
patent: 7295517 (2007-11-01), Anim-Appiah et al.
patent: 7295637 (2007-11-01), Papathanasiou et al.
patent: 7313085 (2007-12-01), Kim
patent: 2002/0001352 (2002-01-01), Stirling-Gallacher et al.
patent: 2002/0017948 (2002-02-01), Hyakudai et al.
patent: 2002/0021715 (2002-02-01), Matheus et al.
patent: 2002/0037058 (2002-03-01), Birru
patent: 2002/0145971 (2002-10-01), Cho et al.
patent: 2002/0146078 (2002-10-01), Gorokhov et al.
patent: 2002/0147953 (2002-10-01), Catreux et al.
patent: 2002/0159540 (2002-10-01), Chiodini
patent: 2002/0186799 (2002-12-01), Sayeed
patent: 2003/0031278 (2003-02-01), Kang et al.
patent: 2003/0058953 (2003-03-01), Lee et al.
patent: 2003/0072395 (2003-04-01), Jia et al.
patent: 2003/0114164 (2003-06-01), Thomas et al.
patent: 2003/0123582 (2003-07-01), Kim et al.
patent: 2003/0128656 (2003-07-01), Scarpa
patent: 2003/0128751 (2003-07-01), Vandenameele-Lepla
patent: 2003/0133518 (2003-07-01), Koomullil et al.
patent: 2003/0207680 (2003-11-01), Yang et al.
patent: 2003/0235252 (2003-12-01), Tellado et al.
patent: 2004/0004933 (2004-01-01), Zhu et al.
patent: 2004/0008618 (2004-01-01), Shirakata et al.
patent: 2004/0071234 (2004-04-01), Li
patent: 2004/0086055 (2004-05-01), Li
patent: 2004/0091057 (2004-05-01), Yoshida
patent: 2004/0156441 (2004-08-01), Peeters et al.
patent: 2004/0157578 (2004-08-01), Auranen
patent: 2004/0190636 (2004-09-01), Oprea
patent: 2004/0190648 (2004-09-01), Anim-Appiah et al.
patent: 2004/0192218 (2004-09-01), Oprea
patent: 2004/0203465 (2004-10-01), Goldstein et al.
patent: 2004/0240570 (2004-12-01), Alard et al.
patent: 2004/0259514 (2004-12-01), Nissila
patent: 2005/0030886 (2005-02-01), Wu et al.
patent: 2005/0084025 (2005-04-01), Chen
patent: 2005/0100106 (2005-05-01), Chen
patent: 2005/0117657 (2005-06-01), Chen
patent: 2005/0141460 (2005-06-01), Currivan et al.
patent: 2005/0175124 (2005-08-01), Goldstein et al.
patent: 2005/0180760 (2005-08-01), Feced et al.
patent: 2005/0265489 (2005-12-01), Chang et al.
patent: 2006/0146962 (2006-07-01), Troya et al.
patent: 2007/0133386 (2007-06-01), Kim et al.
patent: 2007/0140366 (2007-06-01), Rore
Goldsmith et al. “Adaptive Coded Modulation for Fading Channels,” IEEE Transactions on Communications, vol. 46, No. 5, May 1998, pp. 595-602.
Goldsmith et al. “Variable-Rate Variable-Power MQAM for Fading Channels,” IEEE Transactions on Communications, vol. 45, No. 10, Oct. 1997, pp. 1218-1230.
Tang et al. “Effect of Channel Estimation Error on M-QAM BER Performance in Rayleigh Fading,” IEEE Transactions on Communications, vol. 47, No. 12, Dec. 1999, pp. 1856-1864.
Van de Beek et al. “ML Estimation of Time and Frequency Offset in OFDM Systems,” IEEE Transactions on Signal Processing, vol. 45, No. 7, Jul. 1997, pp. 1880-1805.
J.A.C. Bingham, “Multicarrier Modulation for Data Transmission: An Idea Who's Time Has Come,” IEEE Commun. Mag., vol. 28, May 1990, pp. 5-14.
R. Need and R. Prasad, “OFDM for Wireless Multimedia Communications” Norwell, MA: Artech House, 2000.
W. Zhou and Y. Wu, “COFDM: An Overview,” IEEE Trans. Broadcast, vol. 41, Mar. 1995, pp. 1-8.
T. Pollet, M. Van Bladel, and M. Moeneclaey, “BER Sensitivity of OFDM Systems to Carrier Frequency Offset and Wiener Phase Noise,” IEEE Trans. Commun., vol. 43, Feb./Mar./Apr. 1995, pp. 191-193.
T. Schmidl and D.C. Cox, “Robust Frequency and Timing Synchronization for OFDM,” IEEE Trans. Commun., vol. 45, Dec. 1997, 1613-1621.
H. Nikookar and R. Prasad, “On the Sensitivity of Multicarrier Transmission Over Multipath Channels to Phase Noise and Frequency Offsets,” in Proc. IEEE GLOBECOM'96, Nov. 1996, pp. 68-72.
W. Hwang, H. Kang, and K. Kim, “Approximation of SNR Degradation Due to Carrier Frequency Offset for OFDM in Shadowed Multipath Channels,” IEEE Commun. Letters, vol. 7, Dec. 2003, pp. 581-583.
T. Rappaport, Wireless Communications. Upper Saddle River, NJ: Prentice-Hall, 1996, pp. 143-153.
K. Sathananthan and C. Tellambura, “Probability of Error Calcualtion of OFDM Systems with Frequency Offset,” IEEE Trans. Commun., vol. 449, Nov. 2001, pp. 1884-1888.
P. Billingsley, Probability and Measure, 3rd ed. New York: Wiley Interscience, 1995, pp. 357-370.
J.G. Proakis, Digital Communications, 4th ed. New York: McGraw-Hill, 2000, pp. 269-282.
P.H. Moose, “A Technique for Orthogonal Frequency Division Multiplexing Frequency Offset Correction,” IEEE Trans. Commun., vol. 42, Oct. 1994, pp. 2908-2914.
F. Classen and H. Meyr, “Frequency Synchronization Algorithms for OFDM Systems Suitable for Communication Over Frequency Selective Fading Channels,” in Proc. IEEE 44th Veh. Technol. Conf., 1994, pp. 1655-1659.
N. Lashkarian and S. Kiaei, “Class of Cyclic-based Estimators for Frequency-offset Estimation of OFDM Systems,” IEEE Trans. Commun., vol. 48, Dec. 2000 pp. 2139-2149.
U.S. Patent Application Serial Number to be Assigned, filed Nov. 10, 2004, entitled, “Adaptive OFDM Receiver Based on Carier Frequency Offset”.
U.S. Patent Application Serial Number to be Assigned, filed Nov. 10, 2004, entitled, “Adaptive OFDM Transmitter Based on Carier Frequency Offset”.
U.S. Patent Application Serial Number to be Assigned, filed Nov. 10, 2004, entitled, “Frequency Tracking For OFDM Transmission Over Frequency Selective Channels”.
F. Classen and H. Meyr, “Frequency Synchronization Algorithms for OFDM Systems Suitable for Communication Over Frequency Selective Fading Channels,” in Proc. IEEE 44th Veh. Technol. Conf., 1994, pp. 1655-1659.
Goldsmith et al. “Adaptive Coded Modulation for Fading Channels,” IEEE Transactions on Communications, vol. 46, No. 5, May 1998, pp. 595-602.
Goldsmith et al. “Variable-Rate Variable-Power MQAM for Fading Channels,” IEEE Transactions on Communications, vol. 45, No. 10, Oct. 1997, pp. 1218-1230.
H. Nikookar and R. Prased, “On the Sensitivity of Multicarrier Transmission Over Multipath Channels to Phase Noise and Frequency Offsets,” in Proc. IEEE GLOBECOM'96, Nov. 1996, pp. 68-72.
J. R. Barry, D. G. Messerschmitt, and E. A. Lee, Digital Communication, 3rd ed. Norwell:Kluwer Academic Publishers, 2003, pp. 728-738.
J.A.C. Bingham, “Multicarrier Modulation for Data Transmiss
Lee Jung-won
Lou Hui-Ling
Toumpakaris Dimitrios-Alexandros
Marvell International Ltd.
Perilla Jason M.
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