Method of noise cancellation in a signal generated by...

Details Method of noise cancellation in a signal generated by... Method of noise cancellation in a signal generated by...

2006-04-18

2006-04-18

Deppe, Betsy L. (Department: 2637)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S260000

Reexamination Certificate

active

07031410

ABSTRACT:
The invention relates to a method of canceling noise in a signal generated by discrete multi-tone modulation. The noise is caused primarily by the transient of a transmission channel via which the signal is transmitted. The signal comprises a plurality of symbols each of which is preceded by a cyclic prefix. According to the invention, a plurality of parameters is calculated from the digitized sample values of the signal and the approximate transient of the transmission channel is calculated from said plurality of parameters. To cancel the noise the approximately calculated transient is subtracted from the digitized sample values.

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Al-Dhahir, N. et al. “Optimum Finite-length Equalization for Multicarrier Transceivers”IEEE Transactions On Communications44: 56-64, No. 1, 1996.

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