Low Complexity SLM Technique with an Interleaver-Butterfly Ensemble for PAPR Reduction of Power Limited OFDM System

Selected mapping (SLM) is considered as a practical probabilistic PAPR reduction method for OFDM systems. A problem of this technique is its high computational complexity due to multiple inverse Fourier transform. We suggest a decimation in frequency IFFT scheme together with an interleaver-butterfly ensemble to generate multiple candidates. Orthogonality in the frequency domain is kept and better PAPR reduction performance is achieved without additional complex multiplication. Moreover, we obtain a better error rate over both the AWGN channel and the frequency selective fading channel.

[1]  R. Bäuml,et al.  Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping , 1996 .

[2]  J.B. Huber,et al.  A comparison of peak power reduction schemes for OFDM , 1997, GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record.

[3]  John G. Proakis,et al.  Digital Communications , 1983 .

[4]  C. Tellambura,et al.  A blind SLM receiver for PAR-reduced OFDM , 2002, Proceedings IEEE 56th Vehicular Technology Conference.

[5]  Dong-Soo Har,et al.  Merged SLM scheme for PAPR reduction of OFDM system with low complexity , 2009, 2009 IEEE Sarnoff Symposium.

[6]  Hideki Ochiai,et al.  Performance of the deliberate clipping with adaptive symbol selection for strictly band-limited OFDM systems , 2000, IEEE Journal on Selected Areas in Communications.

[7]  Dae-Woon Lim,et al.  A new SLM OFDM scheme with low complexity for PAPR reduction , 2005, IEEE Signal Processing Letters.

[8]  T. Aaron Gulliver,et al.  Fractional Selective Mapping Using Decimation in Time IFFT/FFT , 2008, 2008 IEEE Wireless Communications and Networking Conference.

[9]  Chintha Tellambura,et al.  Peak-to-average power ratio reduction of an OFDM signal using data permutation with embedded side information , 2001, ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196).