Signal separator

Details Signal separator Signal separator

2005-02-01

2008-08-05

Tse, Young T. (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

Reexamination Certificate

active

07409017

ABSTRACT:
A signal separator for separating multiple signals contained in a received signal from each other based on a replica of the received signal is provided. The signal separator comprises a sampling unit configured to sample the received signal at a prescribed sampling timing; an index output unit configured to monitor sampling counts of the sampling unit and output an index signal representing a remainder of a division dividing the sampling counts by a sampling number per a prescribed time period to group the sampled signals; a coefficient-variable filter configured to generate and output a replica of the received signal based on a channel estimation value and a signal point candidate, at least one of the channel estimation value and the signal point candidate being generated according to the index signal; a subtractor configured to subtract the replica from the sampled signal and output a subtraction result as a residual signal; and a maximum likelihood sequence estimator configured to estimate a sequence for each of the multiple signals based on the residual signal, taking into account signal state transition, and output the estimation result at a signal output timing determined by the index signal.

REFERENCES:
patent: 5202903 (1993-04-01), Okanoue
patent: 6028901 (2000-02-01), Huynh et al.
patent: 6243412 (2001-06-01), Fukawa
patent: 6975672 (2005-12-01), Bottomley et al.
patent: 6977977 (2005-12-01), Dubrovin et al.
patent: 7218666 (2007-05-01), Baum et al.
patent: 10-178373 (1998-06-01), None
patent: 11-251959 (1999-09-01), None
Carl S. Wijting, et al., “Groupwise Serial Multiuser Detectors for Multirate DS-CDMA”, Vehicular Technology Conference IEEE, vol. 1, XP-010341886, May 16, 1999, pp. 836-840.

Affiliated with

Also associated with

Rating

Signal separator does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3997992