Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2006-10-02
2011-12-27
Mattis, Jason (Department: 2461)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S208000, C370S345000
Reexamination Certificate
active
08085814
ABSTRACT:
A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame.
REFERENCES:
patent: 5596582 (1997-01-01), Sato et al.
patent: 5726978 (1998-03-01), Frodigh et al.
patent: 5818813 (1998-10-01), Saito et al.
patent: 5867478 (1999-02-01), Baum et al.
patent: 6038450 (2000-03-01), Brink et al.
patent: 6137847 (2000-10-01), Stott et al.
patent: 6172993 (2001-01-01), Kim et al.
patent: 6430148 (2002-08-01), Ring
patent: 6473467 (2002-10-01), Wallace et al.
patent: 6731624 (2004-05-01), Maekawa et al.
patent: 6904283 (2005-06-01), Li et al.
patent: 6959050 (2005-10-01), Baum et al.
patent: 6961364 (2005-11-01), Laroia et al.
patent: 7009931 (2006-03-01), Ma et al.
patent: 7027429 (2006-04-01), Laroia et al.
patent: 7088782 (2006-08-01), Mody et al.
patent: 7088787 (2006-08-01), Wang et al.
patent: 7269127 (2007-09-01), Mody et al.
patent: 7406104 (2008-07-01), Yang et al.
patent: 2001/0031639 (2001-10-01), Makipaa
patent: 2002/0041635 (2002-04-01), Ma et al.
patent: 2002/0080887 (2002-06-01), Jeong et al.
patent: 2002/1008088 (2002-06-01), Jeong et al.
patent: 2002/0122381 (2002-09-01), Wu et al.
patent: 2002/0122382 (2002-09-01), Ma et al.
patent: 2002/1012238 (2002-09-01), Wu et al.
patent: 2003/0002471 (2003-01-01), Crawford et al.
patent: 2003/0072397 (2003-04-01), Kim et al.
patent: 2005/0171995 (2005-08-01), Grindahl et al.
patent: 2009/1006007 (2009-04-01), Ma et al.
patent: 0 762 701 (1997-03-01), None
patent: 0 869 647 (1998-10-01), None
patent: 0 929 172 (1999-07-01), None
patent: 1 096 822 (2000-10-01), None
patent: 1 096 822 (2001-05-01), None
patent: 1 185 001 (2001-08-01), None
patent: 1 185 048 (2001-08-01), None
patent: 1 185 001 (2002-03-01), None
patent: 1 185 048 (2002-03-01), None
patent: 2 291 314 (1996-01-01), None
patent: 2320871 (1997-12-01), None
patent: 2 320 871 (1998-07-01), None
patent: H10-210000 (1998-08-01), None
patent: 1999-022492 (1999-03-01), None
patent: 2000-74825 (2000-12-01), None
patent: 2000-0076921 (2000-12-01), None
patent: 2001-0077186 (2001-08-01), None
patent: 96/41452 (1996-12-01), None
patent: WO 98/37654 (1998-02-01), None
patent: 98/19410 (1998-05-01), None
patent: WO 98/19410 (1998-05-01), None
patent: 98/37654 (1998-08-01), None
patent: WO 99/01956 (1999-01-01), None
patent: 01/76110 (2001-10-01), None
patent: WO 01/76110 (2001-10-01), None
patent: 02/17615 (2002-02-01), None
patent: WO 02/017615 (2002-02-01), None
patent: 02/45333 (2002-06-01), None
Van Bosse: “Signalling in Telecommunication Networks” 1998, John Wiley & Sons, New York, pp. 356-358.
I. Barhumi, G. Leus and M. Moonen, Optimal Training Sequences for Channel Estimation in MIMO OFDM Systems in Mobile Wireless Channels, Feb. 19, 2002, pp. 1-6.
Suhas Diggavi, Naofal Al-Dhahir, Anastasios Stamoulis, Intercarrier Interface in MIMO OFDM, Apr. 28, 2002, pp. 485-489.
Czylwik, Andreas; Synchronization for Systems With Antenna Diversity; IEEE, 1999, pp. 728-732.
Tufvesson, Fredrik; Edfors, Ove, Faulkner, Mike; Time and Frequency Synchronization for OFDM Using PN-Sequence Preambles; IEEE; 1999; pp. 2203-2207.
Müller-Weinfurtner, Stefan H.; Frequency-Domain Frame Synchronization for Optimum Frequency-Differential Demodulation of OFDM; Global Telecommunications Conference—Globecom 1999; IEEE; pp. 857-862.
Zhang, Yingjun; Letaief, K.B.; Multiuser Subcarrier and Bit Allocation Along With Adaptive Cell Selection for OFDM Transmission; IEEE, 2002; pp. 861-865.
Henry, James; Kori, M.H.; Dect Based Rural Radio Local Loop for Developing Countries; IEEE; 1996; pp. 44-46.
Li, Jungson; Faravash, Shayan; Kavehrad, Mohsen; Dynamic Time-Division-Duplex Wireless Local Loop; IEEE; 2000, pp. 1078-1085.
Vogiatzis, N.; Sanchez-P, J.A.; An Adaptive Multicarrier Wireless Access System; IEEE; 2000, pp. 298-303.
Bakker, J.D.; Schoute, F.C.; Prasad, R.; An Air Interface for High Bandwidth Cellular Digital Communications on Microwave Frequencies; IEEE, May 18, 1998, pp. 132-138.
Chuang, J.C-I; Sollenberger, N.R.; Cimini, L.J.; Power Control for Dynamic Packet Assignment; IEEE; May 18, 1998, pp. 1750-1754.
KIPO'S Notice of Preliminary Rejection (including English translation), Korean Application No. 10-2009-7013186, 7 pages total, dated Sep. 19, 2009.
English Abstract of Korean Patent Application No. 10200 00074825, 2 pages total (corresponding to Korean Patent Document No. 2000-74825 listed above in the Foreign Patent Documents section.).
Mueller-Weinfurtner, S. H., “On the Optimality of Metrics for Coarse Frame Synchronization in OFDM: A comparison”, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, vol. 2, Sep. 8, 1998, pp. 533-537.
Mueller-Weinfurtner, S. H. Ed., “Institute of Electrical and Electronics Engineers: Comparison of Preamble Structures for Burst Frequency Synchronization”, Globecom'00, vol. 3, Nov. 27, 2000, pp. 1488-1493.
Almenar V. et al., “Synchronization techiques for HIPERLAN/2”, IEEE 54th Vehicular Technology Conference, vol. 2, Oct. 7, 2001, pp. 762-766.
European Search Report for corresponding European Patent Application No. 10183138, date of completion: Nov. 29, 2010, 3 pages.
European Search Report for corresponding European Patent Application No. 10183133.7, date of completion: Dec. 3, 2010, 8 pages.
European Written Opinion for corresponding European Patent Application No. 10183138.6, date of completion: Nov. 29, 2010, 4 pages.
Müller-Weinfurtner, “Frequency-domain frame synchronization for optimum frequency-differential demodulation of OFDM”, IEEE Global Telecommunications Conference, Dec. 5, 1999, pp. 857-862.
Tufvesson et al., “Time and frequency synchronization for OFDM using PN-sequence preambles”, IEEE Vehicular Technology Conference, Sep. 19, 1999, pp. 2203-2207.
Czylwik, “Synchronization for systems with antenna diversity”, IEEE Vehicular Technology Conference, Sep. 19, 1999, pp. 728-732.
Henry et al., “DECT based rural radio local loop for developing countries”, IEEE Conference on Personal Wireless Communications, Feb. 19, 1996, pp. 44-46.
Yingjun, Zhang et al., “Multiuser subcarrier and bit allocation along with adaptive cell selection for OFDM transmission”, IEEE International Conference on Communications, Apr. 28, 2002, pp. 861-865.
European Search Report for corresponding European Patent Application No. 10158841 dated May 19, 2010.
Bakker et al., “An air interface for high bandwidth cellular digital communications on microwave frequencies”, IEEE Vehicular Technology Conference, May 18, 1998, pp. 132-138.
Chuang et al., “Power control for dynamic packet assignment in advanced cellular internet service”, IEEE Vehicular Technology Conference, May 18, 1998, pp. 1750-1754.
Vogiatzis, Sanchez-P, “An adaptive multicarrier wireless access system”, IEEE Conference on Wireless Communications and Networking, Sep. 23, 2000, pp. 298-303.
Li et al., “Dynamic time-division-duplex wireless local loop”, IEEE Vehicular Technology Conference, Sep. 24, 2000, pp. 1078-1085.
Barhumi et al., “Optimal training sequences for channel estimation in MIMO OFDM systems in mobile wireless channels”, International Zurich Seminar on Broadband Communications, Feb. 19, 2002.
European Search Report for corresponding European Patent Application No. 10161508 dated May 21, 2010.
Eu
Jia Ming
Ma Jianglei
Tong Wen
Zhu Peiying
Mattis Jason
Nortel Networks Limited
LandOfFree
Frame structure, system and method for OFDM communications does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frame structure, system and method for OFDM communications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frame structure, system and method for OFDM communications will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4311766