Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2011-06-07
2011-06-07
Vo, Don N (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S340000
Reexamination Certificate
active
07957481
ABSTRACT:
Low complex algorithms for estimating a delay spread or a RMS delay spread of a multipath channel using channel estimates are disclosed, leading to low overall power consumption. According to an embodiment of the present invention, a delay spread or a RMS delay spread of the multipath channel is determined based on a metric calculated as a function of channel estimates. In another embodiment, an average signal to noise ratio is taken into consideration in addition to the metric to estimate the delay spread or the RMS delay spread. In a further embodiment, the delay spread or the RMS delay spread of the multipath channel is estimated based on an average signal to noise ratio and on a metric being a function of the slope between subcarrier channel estimates. The present invention further relates to an apparatus for estimating a delay spread or a RMS delay spread of the multipath channel.
REFERENCES:
patent: 6028901 (2000-02-01), Huynh et al.
patent: 6370397 (2002-04-01), Popovic et al.
patent: 6731622 (2004-05-01), Frank et al.
patent: 7027527 (2006-04-01), Krauss et al.
patent: 7133474 (2006-11-01), Ramasubramanian et al.
patent: 2003/0026360 (2003-02-01), Ramasubramanian et al.
patent: 2006/0227904 (2006-10-01), Mueller-Weinfurtner et al.
patent: 2006/0239178 (2006-10-01), Svensson et al.
patent: 2006/0239179 (2006-10-01), Berkeman et al.
patent: 2007/0160159 (2007-07-01), Song et al.
patent: 2007/0206689 (2007-09-01), Koo et al.
patent: 2008/0031370 (2008-02-01), Guey et al.
patent: 2008/0152033 (2008-06-01), Gore et al.
patent: 2009/0274252 (2009-11-01), Ghosh
patent: 1 294 148 (2003-03-01), None
patent: WO 99/57819 (1999-11-01), None
patent: WO 2004/064345 (2004-07-01), None
patent: WO 2006/111276 (2006-10-01), None
Lamahewa Tharaka
Leyonhjelm Scott
Nilsbo Magnus
Harness & Dickey & Pierce P.L.C.
Nanoradio AB
Vo Don N
LandOfFree
Method and an apparatus for estimating a delay spread of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and an apparatus for estimating a delay spread of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and an apparatus for estimating a delay spread of a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2739068