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A Linear Transform Approach for PAPR Reduction in OFDM Signals by PTS using Segmented and Iterative Phase Weighting Factors

P. Harish, M. Palanivelan, Dr. Sheila Anand


Orthogonal Frequency Division Multiplexing (OFDM) is one of the attractive technology for wireless communications with Multi-Carrier Modulation (MCM) technique offers a considerable multipath delay spread tolerance, high spectral efficiency, immunity to the frequency selective fading channels and power efficiency. High Peak-to-Average Power Ratio (PAPR) of the transmit signal is a major drawback of multicarrier transmission such as OFDM. Partial Transmit Sequence (PTS) is one of the commonly used schemes to reduce the PAPR. Conventional Partial Transmit Sequence (C-PTS) requires an exhaustive searching over all combinations of the given phase factors, which results in exponential increase to the computational complexity with the number of sub blocks. In this paper, we aim to obtain the desirable PAPR reduction with the low computational and phase search complexity. PTS based phase weighting techniques with low computational complexity, named Segmented Phase Weighting (SPW) and Iterative Phase Weighting (IPW), are proposed. On applying one of the linear transformation techniques called circular time shift to the candidate sequences obtained by SPW and IPW method, high PAPR reduction can be obtained. This system will slightly increase the computational complexity but greater reduction in PAPR. At the receiver, by utilizing the natural diversity of phase constellation for different candidates, the detector can successfully recover the original signal without Side Information (SI). PAPR reduction performance of both proposed schemes are analyzed, the simulation results show that the proposed Circular Time Shifted- Segmented Phase Weighting (CTS-SPW) and Circular Time Shifted- Iterative Phase Weighting (CTS-IPW) schemes achieve better PAPR reduction compared to the C-PTS scheme.


Iterative Phase Weighting (IPW), Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Segmented Phase Weighting (SPW).

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L. Yang, K.K. Soo, S. Q. Li and Y.M. Siu, “PAPR Reduction Using

Low Complexity PTS to Construct of OFDM Signals Without Side

Information,” IEEE Trans. Broadcasting, vol. 57, no. 2, pp. 284-290, Jun

Jun Hou, Jianhua Ge and Jing Li, “Peak-to-Average Power Ratio

Reduction of OFDM Signals Using PTS Scheme With Low

Computational Complexity,” IEEE Trans. Broadcasting, vol. 57, no. 1,

pp. 143-148, Mar. 2011.

Miin-Jong Hao and Chiu-Hsiung Lai, “Precoding for PAPR Reduction

of OFDM Signals With Minimum Error Probability,” IEEE Trans.

Broadcast, vol.56, no. 1, pp. 120-128, Mar. 2010.

M.F. Nainey and F. Marvasti, “Selected Mapping Algorithm for PAPR

Reduction of Space-Frequency Coded OFDM Systems Without Side

Information,” IEEE Trans. Vehicular Technology, vol. 60, no. 3, pp.

-1216, Mar. 2011.

C. P. Li, S. H. Wang, and C. L. Wang, “Novel low-complexity SLM

schemes for PAPR reduction in OFDM systems,” IEEE Trans. Signal

Process, vol.58, no. 5, pp. 2916–2921, May 2010.

N. Taspinar, A. Kalinli, M. Yildirim, “Partial Transmit Sequences for

PAPR Reduction Using Parallel Tabu Search Algorithm in OFDM

Systems,” IEEE Communication Letters, vol. 15, no.9, pp. 974-976,


T. Jiang and Y. Wu, “An overview: peak-to-average power ratio

reduction techniques for OFDM signals,” IEEE Trans. Broadcast, vol.

, no. 2, pp. 257–268, Jun. 2008.

Jung-Chieh Chen, “Partial transmit sequences for PAPR reduction of

OFDM signals with stochastic optimization techniques,” IEEE Trans.

Consumer Electronics, vol. 56, no. 3, pp. 1229-1234, Aug. 2010.

P. Varahram and B.M. Ali, “Partial transmit scheme with new phase

sequence for PAPR reduction in OFDM systems,” IEEE Trans.

Consumer Electronics, vol. 57, no. 2, pp. 366-371, May. 2011.

J. C. Chen, “Application of quantum-inspired evolutionary algorithm to

reduce PAPR of an OFDM signal using partial transmit sequences

technique,” IEEE Trans. Broadcast, vol.56, no.1, pp. 110–113,


S. Gazor and R. Ali Hemmati, “Tone Reservation for OFDM Systems

by maximizing Signal-to-Distortion Ratio,” IEEE Trans. Wireless

Communications, vol. 11, no. 2, pp. 762-770, Feb. 2012.

D.-W. Lim, H.-S. Noh, H.-B. Jeon, J.-S. No, and D.-J. Shin, “Multistage

TR scheme for PAPR reduction in OFDM signals,” IEEE Trans.

Broadcast, vol.55, no.2, pp.300–304, Jun. 2009.

Y. Wang and Z. Luo, “Optimized Iterative Clipping and Filtering for

PAPR Reduction of OFDM Signals,” IEEE Trans. Communications,

vol. 59, no. 1, pp. 33-37, Jan. 2011.

J. Hou, J. H. Ge, and J. Li, “Trapezoidal companding scheme for peak-to-average power ratio reduction of OFDM signals,” Electron.Lett., vol.45, no. 25, pp. 1349–1351, Dec. 2009.

Jun Hou, Jianhua Ge, Dewei Zhai and Jing Li, “Peak-to-Average Power Ratio Reduction of OFDM Signals With Nonlinear Companding Scheme,” IEEE Trans. Broadcast, vol.56, no. 2, pp. 258-262, Jun. 2010.

Sulaiman A. Aburakhia, Ehab F. Badran and Darwish A. E. Mohamed, “Linear Companding Transform for the Reduction of Peak-to-Average Power Ratio of OFDM signals,” IEEE Trans. Broadcast, vol. 55, no. 1, pp. 155-160, Mar. 2009.

M. F. Naeiny, A. J. Jahromi, F. Marvasti, “Metric based symbol predistortion for peak power reduction of space frequency coded OFDM systems,” IEEE Trans. Consumer electronics, vol. 56, n0. 3, pp. 1643-1651, Aug 2010.

Eonpyo Hong and Dongsoo Har, “Peak-to-Average Power Ratio Reduction in OFDM Systems Using All-Pass Filters,” IEEE Trans. Broadcasting, vol. 56, no.1, pp. 114-119, Mar. 2010.

Xiadong Zhu, Tao Jiang and Guangxi Zhu, “Novel Schemes Based on Greedy Algorithm for PAPR Reduction in OFDM Systems,” IEEE Trans. Consumer Electronics, vol. 54, no. 3, pp. 1048-1052, Aug. 2008.

Cai Li, Tao Jiang, Yang Zhou and Hibo Li, “A Novel Constellation Reshaping Method for PAPR Reduction of OFDM signals,” IEEE Trans. Signal Processing, vol. 59, no. 6, pp. 2710-2719, Jun. 2011.

Lingyin Wang and Ju Liu, “PAPR Reduction of OFDM Signals by PTS With Grouping and Recursive Phase Weighting Methods,” IEEE Trans. Broadcasting, vol.57, no. 2, Jun. 2011.


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