Title :
Another application for trellis shaping: PAR reduction for DMT (OFDM)
Author :
Henkel, Werner ; Wagner, Björn
Author_Institution :
Telecommun. Res. Centre, Vienna, Austria
fDate :
9/1/2000 12:00:00 AM
Abstract :
A bound for the possible reduction of the peak-to-average ratio (PAR) dependent on the rate as well as possible practical procedures are presented. The idea of trellis shaping, originally used to minimize average transmit power in single-carrier systems, is applied to the problem of PAR reduction in multicarrier transmission. Its impact, as a function of code rate, as well as design practicability is considered using metrics in both the time and frequency domains
Keywords :
OFDM modulation; convolutional codes; error statistics; frequency-domain analysis; time-domain analysis; trellis coded modulation; DMT; OFDM; PAR reduction; code rate; design practicability; frequency domain analysis; metrics; multicarrier transmission; peak-to-average ratio; time domain analysis; trellis shaping; Discrete Fourier transforms; Fourier transforms; Frequency domain analysis; Gaussian noise; Noise level; OFDM modulation; Peak to average power ratio; Quadrature amplitude modulation; Signal to noise ratio; Time domain analysis;
Journal_Title :
Communications, IEEE Transactions on
