Adaptive active constellation extension for PAPR reduction in OFDM systems

Multicarrier modulations like OFDM suffer from large Peak-to-Average-Power Ratio (PAPR) which causes challenges to the RF front-end. Large PAPR lead to inefficient use of High Power Amplifiers (HPAs) or decreases the system performance. A large number of PAPR reduction methods have been proposed in literature like coding, clipping, tone reservation, tone injection, symbol phase manipulation and constellation adjustment. Active constellation extension (ACE) is a simple method that extends the outer constellation points away such that the minimum distance between the constellation points is not reduced. In this paper adaptive ACE for higher order constellation is simulated. The results are conduced by the power spectral density plots, CCDF and BER plots.

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

[2]  Cristina Ciochina-Duchesne,et al.  An Analysis of OFDM Peak Power Reduction Techniques for WiMAX Systems , 2006, 2006 IEEE International Conference on Communications.

[3]  Douglas L. Jones,et al.  PAR reduction in OFDM via active constellation extension , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[4]  Douglas L. Jones,et al.  PAR reduction in OFDM via active constellation extension , 2003, IEEE Trans. Broadcast..

[5]  Chintha Tellambura,et al.  An Adaptive-Scaling Algorithm for OFDM PAR Reduction Using Active Constellation Extension , 2006, IEEE Vehicular Technology Conference.

[6]  Tao Jiang,et al.  An Overview: Peak-to-Average Power Ratio Reduction Techniques for OFDM Signals , 2008, IEEE Transactions on Broadcasting.

[7]  Chintha Tellambura,et al.  PAR reduction of an OFDM signal using partial transmit sequences , 2001, IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211).

[8]  Chintha Tellambura,et al.  Improved phase factor computation for the PAR reduction of an OFDM signal using PTS , 2001, IEEE Communications Letters.

[9]  Ramjee Prasad,et al.  OFDM for Wireless Multimedia Communications , 1999 .

[10]  Jeffrey G. Andrews,et al.  Adaptive active constellation extension algorithm for peak-to-average ratio reduction in OFDM , 2010, IEEE Communications Letters.

[11]  Z.-Q. Luo,et al.  Optimized Iterative Clipping and Filtering for PAPR Reduction of OFDM Signals , 2011, IEEE Transactions on Communications.

[12]  Jose Tellado-Mourelo,et al.  Peak to average power reduction for multicarrier modulation , 1999 .

[13]  Seung Hee Han,et al.  An overview of peak-to-average power ratio reduction techniques for multicarrier transmission , 2005, IEEE Wireless Communications.