Conditional quasi maximum-likelihood receiver for clipped OFDM signals

Orthogonal frequency division multiplexed systems are particularly prone to errors due to clipping, since they typically have high peak-to-average power ratios. In this paper, we propose a more efficient clipping mitigation technique based on quasi maximum-likelihood detection which gives approximately 3 dB gain for the SER of 2 /spl times/ 10/sup -3/ and an SNR of 25 dB.