Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2004-11-23
2009-12-08
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S260000, C375S340000, C375S346000, C375S343000, C375S316000, C370S329000, C370S500000, C370S331000, C370S210000, C455S446000, C455S434000
Reexamination Certificate
active
07630465
ABSTRACT:
A wireless communications device which may include a wireless receiver for receiving wireless signals comprising unknown data portions over a channel, and a demodulator connected to the wireless receiver. The demodulator may be for estimating a delay spread and a fade rate associated with the channel, determining a desired time-domain interpolation filter based upon the estimated fade rate, and determining a desired frequency-domain interpolation filter based upon the estimated delay spread. The demodulator may further generate channel estimates for the unknown data portions based upon the desired time-domain interpolation filter and the desired frequency-domain interpolation filter, and determine the unknown data portions based upon the channel estimates.
REFERENCES:
patent: 6654429 (2003-11-01), Li
patent: 2003/0026360 (2003-02-01), Ramasubramanian et al.
patent: 2005/0105647 (2005-05-01), Wilhelmsson et al.
patent: 2005/0265490 (2005-12-01), Sestok et al.
Coleri et al., Channel Estimation Techniques Based on Pilot Arrangement in OFDM Systems, IEEE Transactions on Broadcasting, vol. 48, No. 3, Sep. 2002.
Hutter et al., Channel Estimation for Mobile OFDM Systems, Institute for Integrated Circuits, Bridgelab Digital Signal Processing, Technical Institute of Munich.
Cheng et al., Time Versus Frequency Domain Channel Estimation for OFDM Systems with Antenna Arrays, Proc. of the 6th Int. Conf. on Signal Proc., vol. 2, pp. 1340-1343, Aug. 2002.
Coleri et al., Channel Estimation Techniques Based on Pilot Arrangement in OFDM Systems, IEEE Transactions on Broadcasting, vol. 48, No. 3, Sep. 2002.
Hutter et al., Channel Estimation for Mobile OFDM Systems, Institute for Integrated Circuits, Bridgelab Digital Signal Processing, Technical Institute of Munich, 1999.
Cheng et al., Time Versus Frequency Domain Channel Estimation for OFDM Systems with Antenna Arrays, Proc. of the 6th Int. Conf. on Signal Proc., vol. 2, pp. 1340-1343, Aug. 2002.
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A. Attorneys
Fan Chieh M
Harris Corporation
Puente Eva Y
LandOfFree
Wireless communications device providing time and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wireless communications device providing time and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wireless communications device providing time and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4054080