A Novel SLM Scheme for PAPR Reduction in OFDM Systems

Orthogonal frequency-division multiplexing (OFDM) is an attractive transmission technique for high-bit-rate communication systems. One major drawback of OFDM is the high peak-to-average power ratio (PAPR) of the transmitter's output signal. A novel selected mapping (SLM) scheme is proposed, which employs matrix transformation, cyclically shifting, and linear combining algorithm to generate new candidates. The novel scheme requires only one IFFT and gets more candidate transmission signals throughout the entire process. The complexity analysis and simulation results show that this algorithm can dramatically reduce computational complexity comparing with the conventional SLM scheme as in Hill et al., 2000; Yang et al., 2009; Wang and Ouyang, 2005; Li et al., 2010; and Heo et al., 2007 under the similar PAPR reduction performance.

[1]  Chintha Tellambura,et al.  A simplified clipping and filtering technique for PAR reduction in OFDM systems , 2005, IEEE Signal Processing Letters.

[2]  PAPR reduction of OFDM signals using autocorrelation based SLM without side information , 2008, 2008 Canadian Conference on Electrical and Computer Engineering.

[3]  Chin-Liang Wang,et al.  Low-complexity selected mapping schemes for peak-to-average power ratio reduction in OFDM systems , 2005, IEEE Transactions on Signal Processing.

[4]  T. Aaron Gulliver,et al.  PAPR Reduction of OFDM Signals Using Genetic Algorithm PTS Technique , 2008, IEICE Trans. Commun..

[5]  Charalampos Tsimenidis,et al.  Selected mapping without side information for PAPR reduction in OFDM , 2009, IEEE Transactions on Wireless Communications.

[6]  Chih-Peng Li,et al.  A Low-Complexity PAPR Reduction Scheme for SFBC MIMO-OFDM Systems , 2009, IEEE Signal Processing Letters.

[7]  L. Yang,et al.  SLM with non-unit magnitude phase factors for PAPR reduction in OFDM , 2009, 2009 International Conference on Communications, Circuits and Systems.

[8]  Jae Hong Lee,et al.  An overview of peak-to-average power ratio reduction techniques for multicarrier transmission , 2005, IEEE Wireless Communications.

[9]  Michael Faulkner,et al.  Cyclic shifting and time inversion of partial transmit sequences to reduce the peak-to-average power ratio in OFDM , 2000, 11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525).

[10]  Chin-Liang Wang,et al.  Novel Low-Complexity SLM Schemes for PAPR Reduction in OFDM Systems , 2008, IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference.

[11]  Ramjee Prasad,et al.  OFDM for Wireless Communications Systems , 2004 .