Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2006-05-30
2006-05-30
Vo, Don N. (Department: 2631)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S350000, C375S354000
Reexamination Certificate
active
07054390
ABSTRACT:
An adaptive equalization apparatus within a receiver comprises a timing detector (101) that detects a timing suitable for an adaptive equalization processing, by using a first unique word, a timing adjuster (100) that extracts a standardized received signal based on a detection timing, a CIR initial value estimator (103) that estimates an initial value of a channel impulse response by using a first unique word, a CIR initial value setter (104) that sets a plurality of channel impulse response initial values based on estimated initial value, and an adaptive equalizer (102) that individually judges presence or absence of a timing slip when each initial value is used, by judging a distance between a first unique word and a second unique word disposed at a back side, and obtains a decision value by using a channel impulse response initial value that does not generate a timing slip and the extracted received signal.
REFERENCES:
patent: 5081051 (1992-01-01), Mattingly et al.
patent: 5146475 (1992-09-01), Kubo
patent: 5164964 (1992-11-01), Kubo
patent: 5727032 (1998-03-01), Jamal et al.
patent: 5991349 (1999-11-01), Chen
patent: 5995568 (1999-11-01), Molnar et al.
patent: 6212371 (2001-04-01), Sakuma
patent: 6226049 (2001-05-01), Oh
patent: 6404831 (2002-06-01), Melas
patent: 6-164456 (1994-06-01), None
patent: 6-216810 (1994-08-01), None
patent: 8-274693 (1996-10-01), None
patent: 9-8715 (1997-01-01), None
patent: 11-239082 (1999-08-01), None
Hiroshi Kubo et al.: “Adaptive maximum-likelihood sequence estimation by means of combined equalization and decoding in fading environments” IEEE Journal on Selected Areas in Communications, vol. 13, No. 1, pp. 102-109 Jan. 1995.
G. David Forney: “Maximum-likelihood sequence estimation of digital sequences in the presence of intersymbol interference” IEEE Transactions on Information Theory, vol. IT-18, No. 3, pp. 363-378 May 1972.
Hiroshi Kubo et al.: “An adaptive maximum-likelihood sequence estimator for fast time-varying Intersymbol interference channels” IEEE Transactions on Communications, vol. 42, No. 2/3/4, pp. 1872-1880 Feb. 1994, Mar. 1994, Apr. 1994.
Patent Abstracts of Japan, JP 06-164456, Jun. 10, 1994.
Patent Abstracts of Japan, JP 11-239082, Aug. 31, 1999.
Patent Abstracts of Japan, JP 08-274693, Oct. 18, 1996.
Patent Abstracts of Japan, JP 09-008715, Jan 10, 1997.
Mitsubishi Denki & Kabushiki Kaisha
Vo Don N.
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