Pilot-aided channel estimation for OFDM in wireless systems

Details Pilot-aided channel estimation for OFDM in wireless systems Pilot-aided channel estimation for OFDM in wireless systems

2007-11-06

2007-11-06

Corrielus, Jean B. (Department: 2611)

Pulse or digital communications

Receivers

C375S349000, C375S224000, C375S260000, C370S252000

Reexamination Certificate

active

10687400

ABSTRACT:
A method and apparatus for pilot-symbol aided channel estimation in a wireless digital communication system which transmits packets of N OFDM data blocks, each data block comprising a set of K orthogonal carrier frequencies. At the transmitter, pilot symbols are inserted into each data packet at known positions so as to occupy predetermined positions in the time-frequency space. At the receiver, the received signal is subject to a two-dimensional inverse Fourier transform, two-dimensional filtering and a two-dimensional Fourier transform to recover the pilot symbols so as to estimate the channel response.

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