Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1997-12-22
2000-11-28
Pham, Chi H.
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
714796, H03D 100, H04L 2706
Patent
active
061545074
ABSTRACT:
An improved system and method for reducing the computational complexity of metric updating, such as within a maximum likelihood-sequence-estimation (MLSE) detector, used in, for example, demodulating a received signal subject to intersymbol interference. Complexity is reduced by eliminating the computation of common portions of a series of path metrics and perform a full computation of the next state after the optimum path to the next state has been determined. Alternatively, a primary path metric is determined and key components of secondary path metrics are examined to determine secondary path viability. If the secondary path is viable, the full secondary path metric is formed and compared to the primary path metric, which is replaced if the secondary is better.
REFERENCES:
patent: 5291524 (1994-03-01), Itakura et al.
patent: 5295142 (1994-03-01), Hatakeyama
patent: 5375129 (1994-12-01), Cooper
patent: 5499272 (1996-03-01), Bottomley
patent: 5577068 (1996-11-01), Bottomley et al.
patent: 5581568 (1996-12-01), Togami
Ungerbroeck, Gottfried, Adaptive Maximum-Likelihood Receiver for Carrier-=Modulated Data-Transmission Systems, IEEE Transactions on Communications, vol. Com-22, No. 5, May 1974.
Corrielus Jean B
Ericsson Inc
Pham Chi H.
LandOfFree
System and method for signal demodulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for signal demodulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for signal demodulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1733144