Channel estimation for OFDM systems

Details Channel estimation for OFDM systems Channel estimation for OFDM systems

2007-11-28

2011-10-04

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S316000, C375S346000, C375S349000, C375S350000

Reexamination Certificate

active

08031787

ABSTRACT:
In a method for channel estimation of an OFDM signal transmitted via a channel, an initial channel transfer function is calculated by channel estimation. A channel impulse response is calculated on the basis of the initial channel transfer function. Values of the channel impulse response or of a filtered channel impulse response are classified as noise or as a signal as a function of the level of the values of the channel impulse or of the level of the values of the filtered channel impulse response. A noise-reduced channel impulse response is calculated on the basis of the channel impulse response using the classification, and a noise-reduced channel transfer function is calculated on the basis of this noise-reduced channel impulse response.

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