Title :
Efficient maximum likelihood decoding of peak power limiting codes for OFDM
Author :
Grant, Alex J. ; Van Nee, Richard
Author_Institution :
Inst. for Signal & Inf. Process., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
We derive an efficient maximum likelihood soft decision decoding method for peak-to-mean power ratio limiting codes, of interest in OFDM transmission schemes. We extend the well known method of decoding first order Reed-Muller codes to the case of Q-ary information vectors and Q-PSK modulation. In addition we describe reduced-complexity methods of decoding, which simulations show to lose only fractions of a dB compared to the maximum-likelihood method
Keywords :
Hadamard transforms; OFDM modulation; Reed-Muller codes; computational complexity; maximum likelihood decoding; quadrature phase shift keying; OFDM; OFDM transmission; Q-PSK modulation; Q-ary information vectors; efficient decoding method; fast Hadamard transform decoding; first order Reed-Muller codes; maximum likelihood soft decision decoding; peak power limiting codes; peak-to-mean power ratio limiting codes; reduced-complexity methods; simulations; Block codes; Frequency conversion; Frequency modulation; Information processing; Laboratories; Limiting; Maximum likelihood decoding; Modulation coding; OFDM; Signal processing;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686123
