Channel estimation in OFDM systems

Details Channel estimation in OFDM systems Channel estimation in OFDM systems

2008-03-11

2008-03-11

Phu, Phuong (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S346000, C375S231000, C375S232000, C375S285000, C375S350000

Reexamination Certificate

active

07342974

ABSTRACT:
A method for estimating channels of an OFDM signal. The method comprises the steps of deriving responses of pilot channels, deriving responses of first data channels by time and frequency domain combined linear interpolation among the responses of the pilot channels, deriving each response of boundary channels by frequency domain linear interpolation between the responses of the nearest pilot and first data channels, and deriving responses of second data channels by frequency domain extrapolation using the responses of the pilot and first data channels.

REFERENCES:
patent: 6188717 (2001-02-01), Kaiser et al.
patent: 6765969 (2004-07-01), Vook et al.
patent: 7099299 (2006-08-01), Liang et al.
patent: 7149239 (2006-12-01), Hudson
patent: 7242721 (2007-07-01), Alard et al.
patent: 2002/0176485 (2002-11-01), Hudson
patent: 1286544 (2001-03-01), None
Bo Al et al., “Channel Estimation Algorithm for COFDM System”, 1001-893X(2002)06-0061-06, year 2002.

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