Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-04-07
2009-02-24
Pathak, Sudhanshu C (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S368000, C375S343000, C370S335000, C370S342000, C370S209000, C370S509000
Reexamination Certificate
active
07496132
ABSTRACT:
The frame words of the embodiments are suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and/or cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at zero and middle shifts are obtained. This property can be used to slot-by-slot, double-check frame synchronization timing, single frame synchronization and/or channel estimation and allows reduction of the synchronization search time. Further, the present invention allows a simpler construction of a correlator circuit for a receiver. A frame synchronization apparatus and method using an optimal pilot pattern is used in a wide band code division multiple Access (W- CDMA) next generation mobile communication system.
REFERENCES:
patent: 3461451 (1969-08-01), Gutleber
patent: 3728533 (1973-04-01), Matthews
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5022047 (1991-06-01), Dixon et al.
patent: 5504781 (1996-04-01), Wolf
patent: 5533010 (1996-07-01), Tanaka
patent: 5581580 (1996-12-01), Lindbom et al.
patent: 5602881 (1997-02-01), Shiino et al.
patent: 5680414 (1997-10-01), Durrant et al.
patent: 5719873 (1998-02-01), Yamashita et al.
patent: 5727018 (1998-03-01), Wolf et al.
patent: 5737326 (1998-04-01), I et al.
patent: 5774462 (1998-06-01), Ishikawa et al.
patent: 5812593 (1998-09-01), Kaku
patent: 5881057 (1999-03-01), Komatsu
patent: 5889768 (1999-03-01), Storm et al.
patent: 5898665 (1999-04-01), Sawahashi et al.
patent: 5901180 (1999-05-01), Aslanis et al.
patent: 5930366 (1999-07-01), Jamal et al.
patent: 5940433 (1999-08-01), Sawahashi et al.
patent: 5978416 (1999-11-01), Wantanbe et al.
patent: 5982763 (1999-11-01), Sato
patent: 6002716 (1999-12-01), Meyer et al.
patent: 6005903 (1999-12-01), Mendelovicz
patent: 6058138 (2000-05-01), Fukumasa et al.
patent: 6078607 (2000-06-01), Monroe et al.
patent: 6128486 (2000-10-01), Keskitalo et al.
patent: 6134262 (2000-10-01), Kitade et al.
patent: 6192040 (2001-02-01), Jalloul et al.
patent: 6363104 (2002-03-01), Bottomley
patent: 6385259 (2002-05-01), Sung et al.
patent: 6404732 (2002-06-01), van Nee
patent: 6424642 (2002-07-01), Schmidl et al.
patent: 6480526 (2002-11-01), Shoki et al.
patent: 6487252 (2002-11-01), Kleider et al.
patent: 6504830 (2003-01-01), Ostberg et al.
patent: 6507602 (2003-01-01), Dent
patent: 6526091 (2003-02-01), Nystrom et al.
patent: 6542563 (2003-04-01), Shoji
patent: 6553059 (2003-04-01), Ito
patent: 6567482 (2003-05-01), Popovic′
patent: 6594473 (2003-07-01), Dabak et al.
patent: 6647003 (2003-11-01), Abeta et al.
patent: 6661832 (2003-12-01), Sindhushayana et al.
patent: 6721299 (2004-04-01), Song
patent: 7012906 (2006-03-01), Song
patent: 7039036 (2006-05-01), Dabak et al.
patent: 197 44 428 (1999-02-01), None
patent: 0 886 385 (1998-12-01), None
patent: 03032241 (1991-02-01), None
patent: 04-142823 (1992-05-01), None
patent: 09051289 (1997-02-01), None
patent: 10-505477 (1998-05-01), None
patent: 10327126 (1998-12-01), None
patent: WO 95/34154 (1995-12-01), None
patent: WO 95/34157 (1995-12-01), None
patent: WO 97/02666 (1997-01-01), None
patent: WO 00/00912 (1999-01-01), None
patent: WO 00/50902 (2000-02-01), None
Concept Group Alpha, Evaluation Document (Draft 1.0), Part 1, ETSI Tdoc SMG2 270/97, 1997.
Baier, A., et al., “Design Study for a CDMA-Based Third-Generation Mobile Radio System,” IEEE Journal on Selected areas in communications, vol. 12, No. 4, May 1994, pp. 733-743.
Kammeyer, K.D., “Nachrictenübertragung,” B.G. Teubner, Stuttgart, 1996, ISBN 3-519-16142-7, pp. 621-632.
Kohno, Ryuji, Hideki Imai, Mitsutoshi Hatori, and Subbarayan Pasupathy, “Combination of an Adaptive Array Antenna and a Canceller or Interference for Direct-Sequence Spread-Spectrum Multiple-Access System,” IEEE Journal on Selected Areas in Communications vol. 8, No. 4, May 1990, pp. 675-682.
Fiebig, N. Schnell, “Correlation Properties of Extended m-Sequences,” Electronic Letters, vol. 29, vol. 20, Sep. 30, 1993, pp. 1753-1756.
Maskara S. L. et al., “Concatenated Sequences for Spread Spetrum Systems,” IEEE Transactions on Aeroespace and Electronics Systems, New York, NY, vol. AES-17, No. 3, May 1981, XP000791008.
Pehl, Erich, “Digitale und analoge Nachrichtenübertragung,” Hüthig Verlag Heidelberg, 1998, pp. 180-189.
O'Farrell, T., “New Signature Code Sequence Design Techniques For CDMA Systems,” Electronics Letters, Feb. 14, 1991, vol. 27, No. 4, pp. 371-373 (XP000219588).
Proakis, John G., “Digital Communications” McGraw Hill, Inc., New York, NY, 1995, pp. 724-729 and 744-752. (ISBN 0-07-051726-6).
Sarwate, D.V., and M.B. Pursley, “Crosscorrelation Properties of Pseudorandom and Related Sequences,” Proceedings of the IEEE, vol. 68, No. 5, May 1980, pp. 593-619.
Song, “Pilot Signals for Synchronization and/or Channel Estimation,” Aug. 18, 1999, U.S. Appl. No. 09/376,373, (U.S. Patent No. 6,721,299—listed above).
Spilker, J.J., Jr., “Digital Communication by Satellite,” 1977, Prentice Hall Printer, PPER Saddle River, NJ, pp. 450-454. XP002239986.
TS S1.11 V1.1.0, Mar. 1999, 3GPP “Physical Channels and Mapping of Transport Channels onto Physical Channels”, pp. 1-33.
TS 25.211 V2.0.1, Jun. 1999, 3GPP “Physical Channels and Mapping of Transport Channels onto Physical Channels”, pp. 1-41.
TS 25.211 v2.0.1 (Jun. 1996), 3rd Generation Partnership Project (3GPP); Technical Specification Group (TSG); Radio Access Network (RAN); Working Group 1 (WG1); “Physical Channels and Mapping of Transport Channels onto Physical Channels.”
Wade, J.G., “Signal Coding and Processing,” Ellis Horwood Limited, West Sussex, England, 1987, pp. 86-87 and 92-95.
Ked & Associates LLP
KG Electronics Inc.
Pathak Sudhanshu C
LandOfFree
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