Abstract
In recent years, many peak-to-average power ratio (PAPR) reduction techniques have been proposed for orthogonal frequency division multiplexing (OFDM) signals. Among various techniques, the iterative clipping and filtering (ICAF) technique has been considered as a practical scheme, and widely used owing to its non-expansion of bandwidth, low computational complexity, and simplicity in implementation without receiver-side cooperation. However, the performance of conventional ICAF technique is degraded, because the same signals are iteratively clipped with a fixed clipping threshold (CT) in every clipping operation. In this paper, we analyze the performance of conventional ICAF technique, and then propose an adaptive ICAF scheme, which clips the signal with an adaptively modified CT in every clipping operation to achieve enhanced PAPR reduction of OFDM signals. Simulation results show that the proposed scheme significantly outperforms the conventional scheme, in PAPR reduction of OFDM signals at the same number of iterations.
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References
J. Armstrong, Peak-to-average power reduction for OFDM by repeated clipping and frequency domain filtering. Electron. Lett. 38(5), 246–247 (2002)
R.J. Baxley, G.T. Zhou, Comparing selected mapping and partial transmit sequence for PAR reduction. IEEE Trans. Broadcast. 53(4), 797–803 (2007)
H. Chen, H. Liang, PAPR reduction of OFDM signals using partial transmit sequences and Reed–Muller codes. IEEE Commun. Lett. 11(6), 528–530 (2007)
S.J. Heo, H.S. Noh, J.S. No, D.J. Shin, A modified SLM scheme with low complexity for PAPR reduction of OFDM systems. IEEE Trans. Broadcast. 53(4), 804–808 (2007)
X. Huang, J. Lu, J. Zheng, K.B. Letaief, J. Gu, Companding transform for reduction in peak-to-average power ratio of OFDM signals. IEEE Trans. Wirel. Commun. 3(6), 2030–2038 (2004)
T. Jiang, Y. Wu, An overview: peak-to-average power ratio reduction techniques for OFDM signals. IEEE Trans. Broadcast. 54(2), 257–268 (2008)
T. Jiang, Y. Yang, Y.H. Song, Exponential companding technique for PAPR reduction in OFDM systems. IEEE Trans. Broadcast. 51(2), 244–248 (2005)
T. Jiang, G. Zhu, Nonlinear companding transform for reducing peak-to-average power ratio of OFDM signals. IEEE Trans. Broadcast. 50(3), 342–346 (2004)
A.E. Jones, T.A. Wilkinson, S.K. Barton, Block coding scheme for reduction of peak-to-average envelope power ratio of multicarrier transmission systems. Electron. Lett. 30(8), 2098–2099 (1994)
S.M. Ju, S.H. Leung, Clipping on COFDM with phase on demand. IEEE Commun. Lett. 7(2), 49–51 (2003)
B.S. Krongold, D.L. Jones, PAR reduction in OFDM via active constellation extension. IEEE Trans. Broadcast. 49(3), 258–268 (2003)
Q. Liu, R.J. Baxley, X. Ma, G.T. Zhou, Error vector magnitude optimization for OFDM systems with a deterministic peak-to-average power ratio constraint. IEEE J. Sel. Top. Signal Process. 3(3), 418–429 (2009)
S.H. Muller, J.B. Huber, OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences. Electron. Lett. 33(5), 36–69 (1997)
R.V. Nee, R. Prasad, OFDM for Wireless Multimedia Communications (Artech House, Norwood, 2000)
H. Ochiai, H. Imai, Performance of the deliberate clipping with adaptive symbol selection for strictly band-limited OFDM systems. IEEE J. Sel. Areas Commun. 18(11), 2270–2277 (2002)
R. O’Neil, L.N. Lopes, Envelop variations and spectral splatter in clipped multicarrier signals, in Proc. of IEEE PIMRC’95, (1995), pp. 71–75
S.B. Slimane, Reducing the peak-to-average power ratio of OFDM signals through precoding. IEEE Trans. Veh. Technol. 56(2), 686–695 (2007)
J. Tellado, Peak to average power ratio reduction for multicarrier modulation. Ph.D. dissertation, University of Stanford, USA (1999)
L. Wang, C. Tellambura, A simplified clipping and filtering technique for PAR reduction in OFDM systems. IEEE Signal Process. Lett. 12(6), 453–456 (2005)
X. Wang, T.T. Tjhung, C.S. Ng, Reduction of peak-to-average power ratio of OFDM system using a companding technique. IEEE Trans. Wirel. Commun. 45(3), 303–307 (1999)
C.L. Wang, Q.Y. Yuan, Low-complexity selected mapping schemes for peak-to-average power ratio reduction in OFDM systems. IEEE Trans. Signal Process. 53(12), 4652–4660 (2005)
D. Wulich, L. Goldfeld, Reduction of peak factor in orthogonal multicarrier modulation by amplitude limiting and coding. IEEE Trans. Commun. 47(1), 18–21 (1999)
K. Yang, S. Chang, Peak-to-average power control in OFDM using standard arrays of linear block codes. IEEE Commun. Lett. 7(4), 174–176 (2003)
S.S. Yoo, S. Yoon, S.Y. Kim, I. Song, A novel PAPR reduction scheme for OFDM systems: selective mapping of partial tones (SMOPT). IEEE Trans. Consum. Electron. 52(1), 40–43 (2006)
G.S. Yue, X.D. Wang, A hybrid PAPR reduction scheme for coded OFDM. IEEE Trans. Wirel. Commun. 5(10), 2712–2722 (2006)
C. Zhao, Distortion-based crest factor reduction algorithms in multi-carrier transmission systems. Ph.D. dissertation, Georgia Institute of Technology, USA (2007)
Acknowledgements
The present research has been conducted by the research grant of Kwangwoon University in 2013. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2012-0001840).
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Lee, B.M., Kim, Y. An Adaptive Clipping and Filtering Technique for PAPR Reduction of OFDM Signals. Circuits Syst Signal Process 32, 1335–1349 (2013). https://doi.org/10.1007/s00034-012-9512-0
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DOI: https://doi.org/10.1007/s00034-012-9512-0