Analysis and comparison of clipping techniques for OFDM/OQAM peak-to-average power ratio reduction

Orthogonal frequency division multiplexing with offset Quadrature amplitude modulation technique has drawn significant interest in recent years. However, most of the existing Peak-to-Average Ratio (PAPR) reduction schemes cannot be used in the OFDM/OQAM system directly. In this paper, a modified scheme called overlapped segmental approach is implemented with Deep-clipping (DC), Heavy side-Clipping (HC), Classical-Clipping (CC) and Smooth-Clipping (SC) for reducing the PAPR problem specifically in the OFDM/OQAM system. The effectiveness of these techniques are analysed in terms of PAPR-reduction, and Bit Error Rate (BER) degradation. From the analysis and simulation results, Deep Clipping method seems to be the best of the four methods, because of its flexibility in PAPR reduction and BER.

[1]  Pierre Siohan,et al.  Analysis and design of OFDM/OQAM systems based on filterbank theory , 2002, IEEE Trans. Signal Process..

[2]  Svante Signell,et al.  Classic OFDM Systems and Pulse Shaping OFDM/OQAM Systems , 2007 .

[3]  Shang-Kang Deng,et al.  Recursive Clipping and Filtering With Bounded Distortion for PAPR Reduction , 2007, IEEE Transactions on Communications.

[4]  Helmut Bölcskei,et al.  Orthogonal Frequency Division Multiplexing Based on Offset QAM , 2003 .

[5]  Hui Zheng,et al.  A Parallel Combinatory OFDM System with Weighted Phase Subcarriers , 2012, KSII Trans. Internet Inf. Syst..

[6]  Byung-Ho Rhee,et al.  A Low Complexity PTS Technique using Threshold for PAPR Reduction in OFDM Systems , 2012, KSII Trans. Internet Inf. Syst..

[7]  Maurice Bellanger,et al.  Physical layer for future broadband radio systems , 2010, 2010 IEEE Radio and Wireless Symposium (RWS).

[8]  P. Siohan,et al.  Analysis of the Peak-To-Average Power Ratio for OFDM/OQAM , 2006, 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications.

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

[10]  Raviv Raich,et al.  On the benefits of deliberately introduced baseband nonlinearities in communication systems , 2004, 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing.

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

[12]  Chintha Tellambura,et al.  Coding to reduce both PAR and PICR of an OFDM signal , 2002, IEEE Communications Letters.

[13]  Douglas L. Jones,et al.  An active-set approach for OFDM PAR reduction via tone reservation , 2004, IEEE Transactions on Signal Processing.

[14]  M. Okada,et al.  PAR reduction for OFDM signals based on deep Clipping , 2008, 2008 3rd International Symposium on Communications, Control and Signal Processing.

[15]  Zhen He,et al.  Overlapped Segmental Clipping for the PAPR Reduction of the OFDM-OQAM system , 2014, KSII Trans. Internet Inf. Syst..

[16]  Nuan van der Neut,et al.  PAPR reduction in FBMC using an ACE-based linear programming optimization , 2014, EURASIP J. Adv. Signal Process..

[17]  L. Varga,et al.  Clipping-Based Iterative PAPR-Reduction Techniques for FBMC , 2012 .

[18]  Xianbin Wang,et al.  Reduction of peak-to-average power ratio of OFDM system using a companding technique , 1999, IEEE Trans. Broadcast..