Post-IFFT-Modified Selected Mapping to Reduce the PAPR of an OFDM System

Orthogonal frequency-division multiplexing is now one of the most important modulation techniques due to its advantages. Despite its ability to overcome the equalization problem, multipath fading channels, and other issues, this system has a serious problem concerning the high output peaks with respect to the average power, which is called the peak-to-average power ratio (PAPR). Selected mapping (SLM), partial transmitted sequence, and amplitude clipping and filtering are some efficient methods to reduce the PAPR. In a previous work, we slid a single-phase rotation vector on the data sequence in the frequency domain to reduce the PAPR and the complexity compared to the conventional SLM. In this paper, we present a novel method that utilizes the same approach of our previous work, but it processes the data after the inverse fast Fourier transform block (time-domain operations) using a modified version of the SLM scheme, which has less computational complexity than the conventional one. The mathematical derivations and the simulation results show that the PAPR, the computational complexity, and the side information were reduced significantly by the proposed method.

[1]  Chin-Liang Wang,et al.  Novel conversion matrices for simplifying the IFFT computation of an SLM-based PAPR reduction scheme for OFDM systems , 2009, IEEE Transactions on Communications.

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

[3]  Johannes B. Huber,et al.  SLM peak-power reduction without explicit side information , 2001, IEEE Communications Letters.

[4]  R. O'Neill,et al.  Envelope variations and spectral splatter in clipped multicarrier signals , 1995, Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications.

[5]  Pieter Rombouts,et al.  Simple quadrature oscillator for BIST , 2010 .

[6]  Liang Peng,et al.  Optimality Condition for Selected Mapping in OFDM , 2006, IEEE Transactions on Signal Processing.

[7]  Lin Yang,et al.  Selective post-IFFT amplitude randomising for peak-to-average power ratio reduction in orthogonal frequency-division multiplexing-based systems , 2008, IET Commun..

[8]  Lin Yang,et al.  A Low-Complexity Time-Domain Linear Symbol Combining Technique for PAPR Reduction in OFDM Systems , 2008, IEEE Transactions on Signal Processing.

[9]  Iickho Song,et al.  Combining of Cyclically Delayed Signals: A Low-Complexity Scheme for PAPR Reduction in OFDM Systems , 2010, IEEE Transactions on Broadcasting.

[10]  Chintha Tellambura,et al.  Computation of the continuous-time PAR of an OFDM signal with BPSK subcarriers , 2001, IEEE Communications Letters.

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

[12]  S. A. Samad,et al.  Sliding the SLM-technique to Reduce the Non-Linear Distortion in OFDM Systems , 2013 .

[13]  Jizeng Wang,et al.  A New Phase Sequence for SLM in MC-CDMA System , 2007, 2007 International Conference on Wireless Communications, Networking and Mobile Computing.

[14]  Ping Wu,et al.  Peak-to-average power ratio reduction in OFDM using cyclically shifted phase sequences , 2007, IET Commun..

[15]  Hideki Ochiai,et al.  On the distribution of the peak-to-average power ratio in OFDM signals , 2001, IEEE Trans. Commun..

[16]  Yuan Ouyang,et al.  Low-complexity selected mapping schemes for peak-to-average power ratio reduction in OFDM systems , 2005 .

[17]  P. Takis Mathiopoulos,et al.  Time domain constellation shaping technique for peak-to-average power ratio reduction , 2009, IET Commun..

[18]  Ramjee Prasad,et al.  An overview of OFDM and related techniques towards development of future wireless multimedia communications , 2002, Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573).

[19]  T. Wilkinson,et al.  Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes , 1994 .

[20]  Heung-Gyoon Ryu,et al.  A new PAPR reduction scheme: SPW (subblock phase weighting) , 2002, IEEE Trans. Consumer Electron..

[21]  Mishra Madhusmita,et al.  Analysis of Peak-to-Average Power Ratio Reduction Techniques for OFDM using a New-phase Sequence , 2011 .

[22]  Chin-Liang Wang,et al.  A low-complexity peak-to-average power ratio reduction technique for OFDM systems , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[23]  Young-Chai Ko,et al.  Low-Complexity PAPR Reduction Scheme Without Side Information for OFDM Systems , 2012, IEEE Transactions on Signal Processing.

[24]  Jiyu Jin,et al.  A low complexity peak-to-average power ratio reduction method for OFDM systems , 2011, 2011 6th International ICST Conference on Communications and Networking in China (CHINACOM).

[25]  J. Tellado,et al.  Multicarrier Modulation with Low Par: Applications to DSL and Wireless , 2000 .

[26]  Ehab Farouk Badran,et al.  A Novel Semi-Blind Selected Mapping Technique for PAPR Reduction in OFDM , 2011, IEEE Signal Processing Letters.

[27]  Eonpyo Hong,et al.  Efficient phase sequence generation for SLM scheme without side information , 2011, IEICE Electron. Express.

[28]  Yue Xiao,et al.  Improved SLM for PAPR Reduction in OFDM System , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[29]  Mahamod Ismail,et al.  Reducing the power envelope fluctuation of OFDM systems using side information supported amplitude clipping approach , 2014, Int. J. Circuit Theory Appl..

[30]  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.

[31]  Lin Yang,et al.  Redundancy-free and BER-maintained selective mapping with partial phase-randomising sequences for peak-to-average power ratio reduction in OFDM systems , 2008, IET Commun..

[32]  Shaoqian Li,et al.  A Low Complexity Selected Mapping Scheme by Use of Time Domain Sequence Superposition Technique for PAPR Reduction in OFDM System , 2008, IEEE Transactions on Broadcasting.

[33]  Seok-Joong Heo,et al.  On the phase sequence set of SLM OFDM scheme for a crest factor reduction , 2006, IEEE Trans. Signal Process..

[34]  Seungwook Min,et al.  SLM-based OFDM system without side information for data recovery , 2010 .

[35]  Kazuki Maruta,et al.  Control information transmission without resource consumption for PAPR reduction of OFDM signal , 2009 .

[36]  Lin Yang,et al.  Low-complexity post-IFFT PAPR reduction technique for OFDM systems , 2006 .

[37]  J. Huber,et al.  OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences , 1997 .

[38]  Shih-Kai Lee,et al.  Fountain Codes With PAPR Constraint for Multicast Communications , 2011, IEEE Transactions on Broadcasting.

[39]  Norman C. Beaulieu,et al.  Selective Time-Domain Filtering for Reduced-Complexity PAPR Reduction in OFDM , 2009, IEEE Transactions on Vehicular Technology.

[40]  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.

[41]  Seok-Joong Heo,et al.  On the Phase Sequences for Selected Mapping OFDM System , 2004 .

[42]  Vijay Kumar Chakka,et al.  SLM based PAPR reduction of OFDM signal using new phase sequence , 2009 .

[43]  Fugee Tsung,et al.  Chart allocation strategy for serial-parallel multistage manufacturing processes , 2010 .