Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-09-11
2007-09-11
Payne, David C (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S265000, C375S341000, C375S240270, C714S746000, C714S799000
Reexamination Certificate
active
10010429
ABSTRACT:
A suboptimal method for searching for a symbol sequence, the method comprising the steps of: determining a channel impulse response; sampling a received signal; selecting at least one of the highest and/or most reliable impulse response values; determining a reference signal using at least one impulse response value and a symbol sequence assumed as transmitted; determining differential terms corresponding to the selected impulse response values for the signal sample and the reference signal; using the determined differential terms in a transition metric for searching for a symbol sequence; forming a survivor path by adding the symbol sequence provided by the transition metric to the survivor path formed so far.
REFERENCES:
patent: 5371471 (1994-12-01), Chennakeshu et al.
patent: 5537443 (1996-07-01), Yoshino et al.
patent: 5687198 (1997-11-01), Sexton et al.
patent: 5872816 (1999-02-01), Parr et al.
patent: 5907586 (1999-05-01), Katsuragawa et al.
patent: 6556632 (2003-04-01), Kubo et al.
patent: 6674820 (2004-01-01), Hui et al.
patent: 6754263 (2004-06-01), Kakura
patent: 2003/0081702 (2003-05-01), Kubo et al.
patent: 0 935 372 (1999-08-01), None
patent: WO92/11708 (1992-07-01), None
patent: WO98/43360 (1998-10-01), None
“Digital Communications”, Lee et al., pp. 268-275.
Tap Selectable Viterbi Equalization In Spatial And temporal Domains For Multipath Channel, Ishii N. et. al., Nov. 6, 1995, pp. 904-908.
Nokia Corporation
Payne David C
Perman & Green LLP
Wong Linda
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