A low complexity partial transmit sequence scheme by use of dummy signals for PAPR reduction in OFDM systems

In this paper a novel technique for reducing the peak to average power ratio (PAPR) in OFDM systems by using the combination of the dummy sequence insertion (DSI) and partial transmit sequence (PTS) is proposed. In DSI increasing the number of dummy sequence decrease the transmission efficiency (TE) and in PTS the complexity increases when the number of subblock increases. Unlike the conventional PTS which needs several inverse fast fourier transform (IFFT) operations, the proposed DSI-PTS technique requires half IFFT operations only, while the PAPR performance is even better. So, it can remarkably reduce the computational complexity. Simulation results are examined with IEEE 802.16-2004 standard. By applying the DSI-PTS method about 0.5 dB reduction in PAPR at complementary cumulative distribution function (CCDF) of 0.01% is achieved compared to the conventional PTS while the complexity is reduced.

[1]  Yun-Ming Siu,et al.  PAPR reduction of an OFDM signal by use of PTS with low computational complexity , 2006, IEEE Transactions on Broadcasting.

[2]  Monthippa Uthansakul,et al.  Fast Dummy Sequence Insertion method for PAPR reduction in WiMAX systems , 2009, 2009 Asia Pacific Microwave Conference.

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

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

[5]  Sabira Khatun,et al.  Digital perdistortion technique for compensating memory effects of power amplifiers in wideband applications , 2009 .

[6]  Lei Cao,et al.  Comparison of compand-filter schemes for reducing PAPR in OFDM , 2006, IEEE Wireless Communications and Networking Conference, 2006. WCNC 2006..

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

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

[9]  Xianwei Zhou,et al.  PTS-clipping method to reduce the PAPR in ROF-OFDM system , 2009, IEEE Transactions on Consumer Electronics.

[10]  Hyoung-Kyu Song,et al.  A New PAPR Reduction Technique of OFDM System with Nonlinear High Power Amplifier , 2007, IEEE Transactions on Consumer Electronics.

[11]  Heung-Gyoon Ryu,et al.  Dummy sequence insertion (DSI) for PAPR reduction in the OFDM communication system , 2004, IEEE Transactions on Consumer Electronics.

[12]  Xiaodong Li,et al.  Effects of clipping and filtering on the performance of OFDM , 1998, IEEE Communications Letters.

[13]  Alexander M. Haimovich,et al.  Iterative estimation and cancellation of clipping noise for OFDM signals , 2003, IEEE Communications Letters.

[14]  Nelson Sollenberger,et al.  Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences , 2000, IEEE Communications Letters.

[15]  Jeong Goo Kim,et al.  A novel subblock partition scheme for partial transmit sequence OFDM , 1999, IEEE Trans. Broadcast..

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