Title :
A Novel PAPR Reduction Scheme for SC-OFDM with Frequency Domain Multiplexed Pilots
Author :
Hasegawa, Fumihiro ; Okazaki, Akihiro ; Kubo, Hiroshi ; Castelain, Damien ; Mottier, David
Author_Institution :
Inf. Technol. R & D Center, Mitsubishi Electr. Corp., Kamakura, Japan
fDate :
9/1/2012 12:00:00 AM
Abstract :
In this letter, a novel data-pilot multiplexing scheme with reduced peak to average power ratio (PAPR) is introduced for single carrier (SC)-orthogonal frequency division multiplexing (OFDM) systems. In the proposed scheme, phases of SCOFDM symbols are rotated adaptively such that PAPR is reduced and circular shifts are introduced in the time domain (TD). To index the amount of phase rotation applied at the transmitter, a sequence of pilot symbols, which is unique for each phase rotation angle, is chosen from a predetermined set and multiplexed with the phase rotated SC-OFDM symbols in the frequency domain. Simulation results indicate that the proposed method can reduce the PAPR dramatically, and yield superior bit error rate (BER) performance compared to conventional methods.
Keywords :
error statistics; frequency division multiplexing; PAPR reduction scheme; SC-OFDM; bit error rate; data-pilot multiplexing; frequency domain multiplexed pilots; peak-to-average power ratio; single carrier orthogonal frequency division multiplexing; Bit error rate; Discrete Fourier transforms; Neodymium; Partial transmit sequences; Peak to average power ratio; Transmitters; PAPR; SC-FDE; SC-OFDM; adaptive techniques;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2012.061912.120474