Title :
Conditional quasi maximum-likelihood receiver for clipped OFDM signals
Author :
Prot, Sebastian ; Flanagan, Mark ; Heneghan, Conor
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. Dublin, Ireland
fDate :
28 Aug.-2 Sept. 2005
Abstract :
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 × 10-3 and an SNR of 25 dB.
Keywords :
OFDM modulation; maximum likelihood detection; clipped OFDM signals; clipping mitigation; clipping ratio; conditional quasi maximum-likelihood receiver; quasi maximum-likelihood detection; AWGN; Additive white noise; Discrete Fourier transforms; Frequency domain analysis; Gaussian noise; Mathematical model; Maximum likelihood detection; OFDM; Peak to average power ratio; Transmitters;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1522899
