Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2001-11-16
2008-08-26
Wang, Ted (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S324000, C370S324000, C370S503000, C455S502000, C455S437000, C455S515000
Reexamination Certificate
active
07418063
ABSTRACT:
A wireless communications system receiver classifies a received burst as a DTX-high state normal burst or a DTX-low state truncated burst with a high probability of success. D1, the Euclidean distance between the known CDVCC and the bit position of CDVCC in a normal burst, is determined by calculating a confidence-weighted correlation between the two bit patterns. In a high-noise environment, D2, the Euclidean distance between the known CDVCC and the bit position of CDVCC in a truncated burst, is calculated. The ratio D1/D2 is compared to a threshold to classify the DTX state of the received burst. D1 and D2 may be normalized by dividing by the maximum average RSSI over the received burst, plotted on a graph of normalized D1 vs. normalized D2, and compared to a predetermined thresholding function that minimizes the probability of false classification. The thresholding function may be a piece-wise linear curve.
REFERENCES:
patent: 5710772 (1998-01-01), Sato
patent: 6092230 (2000-07-01), Wood et al.
patent: 6097772 (2000-08-01), Johnson et al.
patent: 6272186 (2001-08-01), Bontu et al.
patent: 6286122 (2001-09-01), Alanara
patent: 6842438 (2005-01-01), Benedict et al.
patent: 7024193 (2006-04-01), Tuutijarvi
Chen Dayong
Lee Leonard
Coats & Bennett P.L.L.C.
Ericsson Inc.
Wang Ted
LandOfFree
DTX detection method with high success probability does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DTX detection method with high success probability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DTX detection method with high success probability will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4002887