US Patent 7983144 Clipping distortion canceller for OFDM signals
Patent 7983144 was granted and assigned to New Jersey Institute of Technology on July, 2011 by the United States Patent and Trademark Office.
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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.
US Patent 07983144 Clipping distortion canceller for OFDM signals US Patent 7983144 Clipping distortion canceller for OFDM signals
US Patent 07983144 Clipping distortion canceller for OFDM signals
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