Title :
Partitioned-SLM Scheme with Low Complexity for PAPR Reduction of OFDM Signals
Author :
Yang, Suckchel ; Shin, Yoan
Author_Institution :
Sch. of Electron. Eng., Soongsil Univ., Seoul
Abstract :
In this paper, we propose P-SLM (partitioned-selective mapping) scheme with low complexity for PAPR (peak-to-average power ratio) reduction of OFDM (orthogonal frequency division multiplexing) signals. In the proposed scheme, a symbol sequence in frequency domain is partitioned into several sub-blocks, and each sub-block is multiplied by different phase sequences whose length and number are shorter and smaller than those used in the conventional SLM. Then, among statistically independent sequences in time domain generated after the IFFT (inverse fast Fourier transform) for the phase rotated sub-blocks, the sub-block combination with the lowest PAPR is selected and transmitted. Simulation results reveal that the proposed P-SLM scheme can remarkably reduce the number of IFFT calculation and multiplication than the conventional SLM without loss of PAPR reduction performance
Keywords :
OFDM modulation; fast Fourier transforms; radio networks; OFDM signals; PAPR reduction; inverse fast Fourier transform; orthogonal frequency division multiplexing; partitioned-SLM scheme; partitioned-selective mapping scheme; peak-to-average power ratio; phase sequences; symbol sequence; Bandwidth; Fast Fourier transforms; Frequency domain analysis; OFDM modulation; Peak to average power ratio; Performance loss; Phase shift keying; Quadrature amplitude modulation; RF signals; Transmitters;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
1-4244-0329-4
Electronic_ISBN :
1-4244-0330-8
DOI :
10.1109/PIMRC.2006.254363
