Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2006-05-09
2006-05-09
Chin, Stephen (Department: 2634)
Pulse or digital communications
Equalizers
Automatic
C375S229000, C375S230000, C375S232000, C333S018000
Reexamination Certificate
active
07042937
ABSTRACT:
A channel decoder employs a hybrid frequency-time domain equalizer for effectively combining a frequency domain equalizer with a time domain equalizer to achieve superior static and dynamic multi-path performance compared to conventional decision feedback equalizers. A frequency domain equalizer structure is included within the forward path of a time domain, decision feedback equalizer, with both the frequency domain and time domain portions employing a common error vector. Updates to the taps (frequency bins) may be adapted individually, or fully within the frequency domain without altering the feedback filter. Improved performance, including performance for noisy channels with deep notches, is achieved, and the frequency domain equalizer portion is relieved from equalizing minimum phase zeros of the channel.
REFERENCES:
patent: 6216148 (2001-04-01), Moran et al.
patent: 6359938 (2002-03-01), Keevill et al.
patent: 6456673 (2002-09-01), Wiese et al.
patent: 6546056 (2003-04-01), Rosenlof
patent: 6549512 (2003-04-01), Wu et al.
patent: 6597745 (2003-07-01), Dowling
patent: 6603811 (2003-08-01), Dobson et al.
patent: 6608864 (2003-08-01), Strait
patent: 6690666 (2004-02-01), Norrell et al.
patent: 6785349 (2004-08-01), Rosenlof et al.
patent: 2002/0070796 (2002-06-01), Gay-Bellile et al.
patent: 2002/0086707 (2002-07-01), Struhsaker et al.
patent: 2002/0168002 (2002-11-01), Birru
patent: 2003/0031244 (2003-02-01), Vaidyanathan
patent: 2003/0190000 (2003-10-01), Matsumoto
patent: 2004/0096022 (2004-05-01), Zhang
patent: 1043875 (2000-10-01), None
Interference suppression in DMT receivers using windowing, Kapoor, S. and Nedic, S.;□□Communications, 2000. ICC 2000. 2000 IEEE International Conference on vol. 2, Jun. 18-22, 2000 pp. 778-782 vol. 2□□.
US 000160, “A Frequency Domain Equalizer for Terrestrial Digital TV Reception” Filed Concurrently herewith.
US 010190, “Generation of Decision Feedback Equalizer Data- using Trellis Decoder Traceback Output in an ATSC HDTV Receiver”, Filed Concurrently herewith.
US 010187, “A Two Stage Equalizer for Trellis Coded Systems”, Filed Apr. 10, 2001.
Chin Stephen
File Erin M.
Koninklijke Philips Electronics , N.V.
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