Patent ID: 8804862

Claim:
A computer-implemented method of performing peak reduction and clipping mitigation, comprising: receiving at a receiver a transmitted orthogonal frequency division multiplexed (OFDM) signal modulating a plurality of data symbols, the OFDM signal being clipped by a clipping signal c to lower the transmitted signal's peak-to-average power ratio, the clipping signal c being sparse in time; compressively sensing a peak-reduced portion of the received OFDM signal by utilizing an l 1 minimization scheme, an output of the compressively sensing step providing an estimate of the clipping signal c at the receiver; feeding through a remaining, non-peak reduced portion of the received OFDM signal; least squares estimating the remaining, non-peak reduced portion of the received OFDM signal, thereby providing a least squares estimated portion of the remaining, non-peak-reduced portion of the received OFDM signal; combining the least squares estimated portion of the received OFDM signal with the estimate of the clipping signal c, thereby resulting in a combined estimate of the transmitted OFDM signal; and transforming the combined estimate of the transmitted OFDM signal, thereby recovering undistorted coefficients of the transmitted OFDM signal; whereby, the data symbols in the transmitted OFDM signal are accurately recovered.