Receiver and adaptive equalizing method

Pulse or digital communications – Receivers – Particular pulse demodulator or detector

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Receiver and adaptive equalizing method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Receiver and adaptive equalizing method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiver and adaptive equalizing method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3550672

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.