New Jersey Institute of Technology

Other

Hangjun Chen

Alexander Mircea Haimovich

Methods and apparatus are provided for reducing clipping noise from an OFDM signal, the methods and apparatus are operable to carry out actions including: (a) transforming a received orthogonal frequency division multiplexed (OFDM) signal from a transmission channel into the frequency domain, the OFDM signal having been subject to a clipping function prior to transmission in order to reduce the peak-to-average power ratio (PAPR); (b) recovering data symbols from the transformed OFDM signal, which include clipping noise; (c) estimating the clipping noise in the frequency domain based on the data symbols; and (d) subtracting the estimated clipping noise from the transformed OFDM signal.

Clipping distortion canceller for OFDM signals

Time-space encoding and/or decoding may employ time variant linear transformations. Turbo coding and/or decoding may be used in conjunction with the use of time variant linear transformations. Such time variant linear transformations may be unitary in nature.

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Tyngsborough, MA, United States of America

Hangjun Chen