Method and apparatus of recursive time-frequency channel...

Details Method and apparatus of recursive time-frequency channel... Method and apparatus of recursive time-frequency channel...

2011-08-23

2011-08-23

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, C375S350000

Reexamination Certificate

active

08005156

ABSTRACT:
An approach is provided for estimating a channel of a multi-carrier transmission by splitting an interpolation or extrapolation or smoothing of estimates into a frequency domain part and a time domain part, wherein the channel estimation unit is configured to use for both the frequency domain part and the time domain part respective recursive filters, and wherein at least one of the recursive filters is adapted to channel conditions of the multi-carrier transmission.

REFERENCES:
patent: 2005/0105647 (2005-05-01), Wilhelmsson et al.
patent: 2006/0239178 (2006-10-01), Svensson et al.
patent: 2009/0059885 (2009-03-01), Sadek et al.
patent: 2010/0202544 (2010-08-01), Osseirar et al.
International Search Report and Written Opinion, PCT/IB2008/003240, Apr. 16, 2009, pp. 1-16.
Xiaodai Dong et al., “Linear Interpolation in Pilot Symbol Assisted Channel Estimation for OFDM,” IEEE Transactions on Wireless Communications, IEEE Service Center, Piscataway, NJ, US, vol. 6, No. 5, May 1, 2007.

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