Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2005-06-28
2005-06-28
Ha, Dac V. (Department: 2634)
Pulse or digital communications
Equalizers
Automatic
C375S296000, C375S348000, C455S063300, C455S067700, C329S316000, C329S348000, C332S108000, C332S119000, C332S151000
Reexamination Certificate
active
06912249
ABSTRACT:
A system and method for training a radio receiver to mitigate the effects of ISI caused by multi-path includes receiving a header of a transmitted packet at the receiver, the header containing at least one flag to identify a corresponding reference training sequence to be selected by the receiver and to indicate whether a training sequence is inserted in a packet. The receiver decodes the header to determine whether a training sequence is indicated by the flag and to select the corresponding reference training sequence. The training sequence is transmitted positioned within a data packet at a midamble between the header and a first segment of the data packet. The received training sequence is compared with the selected reference training sequence and the equalization parameters of the receiver are adjusted based on the results of the comparison. The selected reference training sequence corresponds to the modulation scheme applied to the payload.
REFERENCES:
patent: 4468786 (1984-08-01), Davis
patent: 4873683 (1989-10-01), Borth et al.
patent: 5263026 (1993-11-01), Parr et al.
patent: 5373507 (1994-12-01), Sköld
patent: 5384791 (1995-01-01), Klein
patent: 5481565 (1996-01-01), Pal
patent: 5483557 (1996-01-01), Webb
patent: 5524124 (1996-06-01), Koenig
patent: 5537398 (1996-07-01), Siwiak
patent: 5577068 (1996-11-01), Bottomley et al.
patent: 5909469 (1999-06-01), Frodigh et al.
patent: 5926746 (1999-07-01), Morley
patent: 5978361 (1999-11-01), Kokudo
patent: 5995499 (1999-11-01), Hottinen et al.
patent: 6061549 (2000-05-01), Labonte et al.
patent: 6101219 (2000-08-01), Perez Abadia et al.
patent: 6118812 (2000-09-01), Dagdeviren
patent: 6169761 (2001-01-01), Marcoccia et al.
patent: 6185251 (2001-02-01), Fertner
patent: 6407993 (2002-06-01), Moulsley
patent: 6693566 (2004-02-01), Jaffe et al.
patent: 0 615 352 (1994-09-01), None
patent: 1 073 302 (2001-01-01), None
patent: 00/05844 (2000-02-01), None
patent: 00/56928 (2000-09-01), None
Zhang et al., “A Performance Analysis and Design of Equalization with Pilot Aided Channel Estimation” IEEE Vehicular Technology Conference, May 4-7, 1997, pp. 720-724, New York, USA.
U.S. Provisional Application entitled “Selective-Repeat Automatic Retransmission Query (ARQ) Protocol and/or Ping Pong Protocol” filed Feb. 3, 2001.
Ha Dac V.
Potomac Patent Group PLLC
Telefonaktiebolaget L M Ericsson (publ)
LandOfFree
Method and system for training a radio receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for training a radio receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for training a radio receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3521097