Method for estimating time and frequency offset in an OFDM...

Multiplex communications – Generalized orthogonal or special mathematical techniques

Reexamination Certificate

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C370S480000, C375S260000, C375S344000, C375S346000

Reexamination Certificate

active

11095978

ABSTRACT:
A synchronization technique computes, in the frequency domain, a differential-in-frequency function across a large number of OFDM tones, to develop robust estimates of time and frequency offset. The technique allows the system designer to directly trade performance in the presence of channel impairments against signal processing complexity.

REFERENCES:
patent: 5596582 (1997-01-01), Sato et al.
patent: 5946292 (1999-08-01), Tsujishita et al.
patent: 6058101 (2000-05-01), Huang et al.
patent: 6198782 (2001-03-01), De Courville et al.
patent: 6269132 (2001-07-01), Yonge, III
patent: 6363084 (2002-03-01), Dejonghe
patent: 6381251 (2002-04-01), Sano et al.
patent: 6396803 (2002-05-01), Hornsby et al.
patent: 6459679 (2002-10-01), Kim
patent: 6470030 (2002-10-01), Park et al.
Timothy M. Schmidl and Donald C. Cox, “Robust Frequency and Timing Synchronization for OFDM,” IEEE Transactions on Communications, vol. 45, No. 12, Dec. 1997, pp. 1613-1621.
Thierry Pollet et al., “BER Sensitivity of OFDM systems to Carrier Frequency Offset and Wiener Phase Noise,” IEEE Transactions on Communications, vol. 43, No. 2/3/4, Feb./Mar./Apr. 1995; pp. 191-193.
Paul H. Moose, “A Technique for Orthogonal Frequency Division Multiplexing Frequency Offset Correction,” IEEE Transactions on Communications, Vo. 42, No. 10, Oct. 1994, pp. 2908-2914.
Timothy M. Schmidl and Donald C. Cox, “Low-Overhead, Low-Complexity [Burst] Synchronization for OFDM”, Proc. ICC, Jun. 1996, pp. 1301-1306.
J.-J Van De Beek, et al., “Low Complex Frame Synchronization in OFDM Systems,” Proc. ICUPC, Nov. 1995, pp. 982-986.
Laszlo Hazy and Mohammed El-Tanany, “Synchronization of OFDM Systems Over Frequency Selective Fading Channels,” 1997 IEEE 47thVehicular Technology Conference, Phoenix, AZ, May 4-7, 1997; pp. 2094-2098.
Thierry Pollet et al., “The BER Performance of OFDM Systems Using Non-Synchronized Sampling,”Proc. Globecom, Nov. 1994, pp. 253-257.
Ji Sung Oh et al., “A Carrier Synchronization Technique for OFDM on the Frequency-Selective Fading Enviroment,” 1996 IEEE 46thVehicular Technology Conference, Atlanta, GA, Apr. 28-May 1, 1996; pp. 1574-1578.
William D. Warner et al., “OFDM/FM Frame Synchronization for Mobile Radio Data Communication,” IEEE Transactions on Vehicular Technology, vol. 42, No. 3, Aug. 1993, pp. 302-313.
J-J 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. 1800-1805.
Flavio Daffara and Antoine Chouly, “Maximum Likelihood Frequency Detectors for Orthogonal Multicarrier Systems,” IEEE International Conference on Communications '93, May 23-26, 1993, Geneva, pp. 766-771.
Hiroshi Nogami et al., “A Frequency and Timing Period Acquisition Technique for OFDM Systems,” The Sixth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'95, Sep. 27-29, 1995, Toronto, pp. 1010-1015.
T. Keller et al., “Orthogonal Frequency Division Multiplex Synchronization Techniques for Wireless Local Area Networks,” PIMRC'96, Oct. 15-18, 1996, Taipei, Taiwan, pp. 963-967.
Minoru Okada et al., “Optimum Synchronization of Orthogonal Multi-Carrier Modulated Signals,” PIMRC'96, Oct. 15-18, 1996, Taipei, Taiwan, pp. 863-867.
Masato Mizoguchi, et al., “A Fast Burst Synchronization Scheme for OFDM,” IEEE 1998 International Conference on Universal Personal Communications (ICUPC '98), Oct. 5-9, 1998, Florence, Italy, pp. 125-129.
Flavio Daffara and Ottavio Adami, “A New Frequency Detector for Orthogonal Multicarrier Transmission Techniques,” 1995 IEEE 45thVehicular Technology Conference, Jul. 25-28, 1995, Chicago, Illinois, pp. 804-809.
Ferdinand Classen and Heinrich Meyr, “Frequency Synchronization Algorithms for OFDM Systems Suitable for Communication over Frequency Selective Fading Channels,” VTC 1994, 1994 IEEE 44thVehicular Technology Conference, Jun. 8-10, 1994, Stockholm, pp. 1655-1659.
Uwe Lambrette, et al., “OFDM Burst Frequency Synchronization by Singe Carrier Training Data,” IEEE Communications Letters, vol. 1, No. 2, Mar. 1997, pp. 46-48.
Keon Woo Kang et al., “Decision-Directed Maximum-Likelihood Estimation of OFDM Frame Synchronisation Offset,” Electronics Letters, Dec. 8, 1994, vol. 30, No. 25, pp. 2153-2154.
Marco Luise and Ruggero Reggiannini, “Carrier Frequency Acquisition and Tracking for OFDM Systems,” IEEE Transactions on Communications, vol. 44, No. 11, Nov. 1996, pp. 1590-1598.
Michael Speth, et al., “Minimum Overhead Burst Synchronization for OFDM Based Broadband Transmission,” IEEE Globecom 1998, Conference Record—vol. 5 of 6, Nov. 8-12, 1998, Sydney, pp. 2777-2782.
Rohit Negi and John Cioffi, “Blind OFDM Symbol Synchronization in ISI Channels,” IEEE Globecom 1998, Conference Record—vol. 5 of 6, Nov. 8-12, 1998, pp. 2812-2817.

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