Blind channel estimation in an orthogonal frequency division...

Details Blind channel estimation in an orthogonal frequency division... Blind channel estimation in an orthogonal frequency division...

2011-04-19

2011-04-19

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S259000, C370S203000, C370S206000, C370S208000, C370S210000

Reexamination Certificate

active

07929620

ABSTRACT:
A method for stable channel estimation to increase frequency band efficiency that is lost by using a pilot, and to reduce the complexity and the sensitivity to channel zero. The method includes generating an i-th symbol block Siincluding N carriers, performing an inverse fast Fourier transform (IFFT) operation on the i-th symbol block, and forming an orthogonal frequency division multiplexing (OFDM) symbol block. The method also includes attaching a guard interval sample in front of the i-th OFDM symbol block Uiand forming at least one OFDM symbol block Ui,cp. The method further includes modeling the formed OFDM symbol block Ui,cpwith a channel finite impulse response (FIR) filter and estimating channel impulse response using signals yi received through a channel.

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