Title :
Trellis shaped coded OFDM systems with high power efficiency
Author_Institution :
Yokohama Nat. Univ., Japan
fDate :
29 June-4 July 2003
Abstract :
A new trellis shaping design is proposed for the coded OFDM systems. We derive the branch metric based on the autocorrelation of transmit sequence. By minimizing the sidelobe components of the autocorrelation, the proposed trellis shaping can reduce both peak-to-average power ratio and average power of the band-limited QAM-OFDM signals. Computational reduction for metric calculation is also proposed.
Keywords :
OFDM modulation; quadrature amplitude modulation; trellis codes; band-limited QAM-OFDM signals; metric calculation computational reduction; peak-to-average power ratio; power efficiency; sidelobe components; transmit sequence autocorrelation; trellis shaped coded OFDM systems; Autocorrelation; Baseband; Constellation diagram; Convolutional codes; Dynamic range; Equations; OFDM; Peak to average power ratio; Power amplifiers; Quadrature amplitude modulation;
Conference_Titel :
Information Theory, 2003. Proceedings. IEEE International Symposium on
Print_ISBN :
0-7803-7728-1
DOI :
10.1109/ISIT.2003.1228020
