System and method for pre-FFT OFDM fine synchronization

Details System and method for pre-FFT OFDM fine synchronization System and method for pre-FFT OFDM fine synchronization

2008-03-18

2008-03-18

Wang, Ted (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S260000, C375S340000, C375S355000, C375S371000

Reexamination Certificate

active

10193102

ABSTRACT:
A synchronization unit for performing fine synchronization in the Time Domain, the synchronization unit includes a storage configured to store reference signals. A multiplier capable of calculating sum of zero product shift, sum of minus one product shift, and sum of plus one product shift, based on the reference signals. A signal analyzer capable of computing left, center, and right cross-correlation points based on the sum of minus one product shift, the sum of plus one product shift, and the sum of zero product shift. A timing error estimation unit capable of estimating timing error of the received signal based on the left cross-correlation point and the right cross-correlation point. A phase estimation unit capable of estimating common phase error of the received signal based on the sum of zero product shift. A correlation level estimation unit capable of calculating correlation level indicative of a correlation between the received signal and a reflection of the received signal ghost based on the center point.

REFERENCES:
patent: 5652772 (1997-07-01), Isaksson et al.
patent: 5771224 (1998-06-01), Seki et al.
patent: 5838734 (1998-11-01), Wright
patent: 5867532 (1999-02-01), Ito et al.
patent: 5920598 (1999-07-01), Hyakudai et al.
patent: 5987063 (1999-11-01), Rinne
patent: 6058121 (2000-05-01), Kim et al.
patent: 6067295 (2000-05-01), Bahai et al.
patent: 6137847 (2000-10-01), Stott et al.
patent: 6304611 (2001-10-01), Miyashita et al.
patent: 6426978 (2002-07-01), Bottomley et al.
patent: 6711221 (2004-03-01), Belotserkovsky et al.
patent: 6720824 (2004-04-01), Hyakudai et al.
patent: 2003/0012308 (2003-01-01), Sampath et al.
Optimum receiver design for wireless broad-band systems using OFDM. I, Speth, M.; Fechtel, S.A.; Fock, G.; Meyr, H.;□□Communications, IEEE Transactions on vol. 47, Issue 11, Nov. 1999 pp. 1668-1677, Digital Object Identifier 10.1109/26.803501
Speth M., Fechtel S., Fock G., and Meyr H., “Optimum Receiver Design for OFDM-based Broadband Transmission—Part 2: A Case Study”, IEEE, vol. 49, No. 4, Apr. 2001.
European Telecommunications Standards Institute (ETSI)—ETS 300 744, “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital Terrestrial television (DVB-T)”, Mar. 1997.
Richard Van Nee, Ramjee Prasad, “OFDM for wireless multimedia communications”, 2000, Artech House Publishers.

Affiliated with

Also associated with

Rating

System and method for pre-FFT OFDM fine synchronization does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for pre-FFT OFDM fine synchronization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for pre-FFT OFDM fine synchronization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3911017