Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction
Reexamination Certificate
2006-10-24
2006-10-24
Tran, Khanh (Department: 2611)
Pulse or digital communications
Synchronizers
Phase displacement, slip or jitter correction
C375S346000
Reexamination Certificate
active
07127019
ABSTRACT:
Methods and apparatus for reducing phase jitter in a multi-tone, e.g., OFDM, receiver are described. A jitter compensation filter is used to process a received signal following timing recovery and/or channel compensation to reduce and/or eliminate the effect of phase jitter. Jitter compensation filter tap weights are updated after filtering the received signal based on one or more signal error measurements. The same received signal is filtered using the updated filter, and error measurements generated from the filtered signal are used to once again update the filter's tap weights. After a fixed number of filter update cycles and/or some other filter updating stop criterion being satisfied, the filter updating process is stopped and the filtered signal is used, e.g., supplied to additional receiver circuitry.
REFERENCES:
patent: 5115452 (1992-05-01), Cupo
patent: 6034993 (2000-03-01), Norrell et al.
patent: 6246717 (2001-06-01), Chen et al.
patent: 6452987 (2002-09-01), Larsson et al.
patent: 6570917 (2003-05-01), Lai et al.
patent: 6608863 (2003-08-01), Onizawa et al.
patent: 6816548 (2004-11-01), Shiue et al.
Ahn Sam K.
Hitachi , Ltd.
Straub Michael P.
Straub & Pokotylo
Tran Khanh
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