Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2011-08-02
2011-08-02
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S325000
Reexamination Certificate
active
07991084
ABSTRACT:
A detect decision is made by non-coherently combining results from correlating a preamble (CAZAC) sequence with base/root sequences used in the cell and setting a detection threshold based on those combined results. Another threshold can be set based on coherently combining results from correlating the preamble sequence, in which case the detect decision is based on satisfying either one of the thresholds. Where the sequence repeats in the same preamble, the results that are combined are from correlating the first instance of the CAZAC sequence and from correlating the second instance of the CAZAC sequence. Where the sequence does not repeat, different segments of the CAZAC sequence, each less than the whole and not necessarily of the same length, are correlated for a partial correlation on each segment, then the segments are combined and used to set the detection threshold. Detection may be done in stages, adjusting the threshold after the first stage based on comparing the results of non-coherent and coherent combining.
REFERENCES:
patent: 7113538 (2006-09-01), Chen et al.
patent: 2008/0101306 (2008-05-01), Bertrand et al.
patent: 2010/0182979 (2010-07-01), Malladi et al.
patent: 1 178 638 (2002-02-01), None
3GPP TSG RAN WG1 #47, R1-063214, XP-002481493, “Non Synchronized Random Access Design for High Doppler Conditions”, Nov. 6-10, 2006, Riga, Latvia, 7 pgs.
“Non Synchronized Random Access Design for High Doppler Conditions”, Riga,Latvia, 3GPP TSG RAN WG1 #47, Nov. 6-10, 2006, pp. 1-7.
Hooli Kari
Korhonen Juha Sakari
Pajukoski Kari
Tiirola Esa
Bayard Emmanuel
Harrington & Smith
Nokia Corporation
LandOfFree
Apparatus, method and computer program product for detecting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus, method and computer program product for detecting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus, method and computer program product for detecting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2688927