Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30184
Power Efficient OFDM Signals with Reduced Symbol's Aperiodic Autocorrelation

Authors: Ibrahim M. Hussain

Abstract:

Three new algorithms based on minimization of autocorrelation of transmitted symbols and the SLM approach which are computationally less demanding have been proposed. In the first algorithm, autocorrelation of complex data sequence is minimized to a value of 1 that results in reduction of PAPR. Second algorithm generates multiple random sequences from the sequence generated in the first algorithm with same value of autocorrelation i.e. 1. Out of these, the sequence with minimum PAPR is transmitted. Third algorithm is an extension of the second algorithm and requires minimum side information to be transmitted. Multiple sequences are generated by modifying a fixed number of complex numbers in an OFDM data sequence using only one factor. The multiple sequences represent the same data sequence and the one giving minimum PAPR is transmitted. Simulation results for a 256 subcarrier OFDM system show that significant reduction in PAPR is achieved using the proposed algorithms.

Keywords: Aperiodic autocorrelation, OFDM, PAPR, SLM, wireless communication.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1061982

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1346

References:


[1] Seung Hee Han and Jae Hong Lee, "Peak-to-average power ratio reduction of an OFDM signal by signal set expansion," in Proc. IEEE International Conference on Communications 2004 (ICC 2004), Paris, France, June 2004, vol.2, pp. 867- 871.
[2] Al-Shaikhi, A.A. and How, J., "Erasure Based PAPR Reduction Using Minimally Expanded Constellations in OFDM Systems", in proc. IEEE Global Telecommunications Conference 2007 (GLOBECOM '07), Washington DC, USA, Nov. 2007, pp. 2904-2909.
[3] Hideki Ochiai, "A novel trellis-shaping design with both peak and average power reduction for OFDM systems", IEEE Transactions on Communications, vol. 52, no. 11, pp. 1916-1926, Nov 2004.
[4] S. H. Muller and J. B. H├╝ber, "OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences," IEE Electron. Lett., vol. 33, no. 5, pp. 368-369, Feb. 1997.
[5] Cimini, L.J., Jr. and Sollenberger, N.R., "Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences," IEEE Communications Letters, vol.4, no.3, pp.86-88, March 2000.
[6] Christian Siegl and Robert F. H. Fischer, "Partial transmit sequences for peak-to-average power ratio reduction in multiantenna OFDM", EURASIP Journal on Wireless Communications and Networking, Vol. 2008, Article ID 325829, 11 pages. January, 2008.
[7] Theodoros Giannopoulos and Vassilis Paliouras, "A Low-Complexity PTS-based PAPR Reduction Technique for OFDM Signals without Transmission of Side Information", Journal of Signal Processing Systems, vol. 56, no. 2-3, pp. 141-153, September 2009.
[8] Xinchun Wu, Zhigang Mao, Jinxiang Wang, Bin Zhou, "A Novel PTS Technique with Combinative Optimization in Real Part and Imaginary Part for PAPR Reduction in OFDM Systems,", in proc. Third International Conference on Next Generation Mobile Applications, Services and Technologies 2009, Cardiff, Wales, pp.215-218, September 2009.
[9] Chin-Liang Wang and Yuan Ouyang, "Low-complexity selected mapping schemes for peak-to-average power ratio reduction in OFDM systems," IEEE Transactions on Signal Processing, vol.53, no.12, pp. 4652-4660, Dec. 2005.
[10] Suckchel Yang, and Yoan Shin, "An Adaptive SLM Scheme Based on Peak Observation for PAPR Reduction of OFDM Signals", IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E91, no. 1, pp. 422-425 January 2008.
[11] Jayalath A.D.S and Tellambura C., "SLM and PTS peak-power reduction of OFDM signals without side information," IEEE Transactions on Wireless Communications, vol.4, no.5, pp. 2006-2013, Sept. 2005.
[12] Breiling, H.; Muller-Weinfurtner, S.H.; Huber, J.B., "SLM peak-power reduction without explicit side information", IEEE Communications Letters, vol.5, no.6, pp. 239-241, Jun 2001.
[13] Jyh-Horng Wen, Shu-Hong Lee and Chu-Hsuan Cheng, "SLM-based PAPR reduction method using partial data circulation and side information insertion in OFDM systems", International Journal of Communication Systems, vol. 22, no. 1, pp. 87-100, January 2009.
[14] Mobasher, A. and Khandani, A.K., "Integer-based constellation-shaping method for PAPR reduction in OFDM systems," IEEE Transactions on Communications, vol.54, no.1, pp. 119-127, Jan. 2006.
[15] P. Van Eetvelt, G. Wade and M. Tomlinson, "Peak to Average Power Reduction for OFDM Schemes by Selective Scrambling," IEE Electronics Letters, vol. 32, no. 21, pp. 1963-1964, October 1996.
[16] H. Nikookar and R. Prasad, "Weighted multicarrier modulation for peak-to average power reduction," IEICE Trans. on Commun., vol. E83- B(8), pp. 1864-1872, Aug. 2000.
[17] Homayoun Nikookar and Knut Sverre Lidsheim, "Random phase updating algorithm for OFDM transmission with low PAPR", IEEE Transactions on Broadcasting, vol. 48, no. 2, pp. 123-128, June 2002.
[18] Abolfazl Ghassemi and T. Aaron Gulliver, "Low Autocorrelation Fractional PTS Subblocking for PAPR Reduction in OFDM Systems", in proc. Conference Communication Networks and Services Research 2008 (CNSR 2008), Halifax, NS, May 2008, pp. 41-45.
[19] C. Tellambura, "Computation of the continuous-time PAR of an OFDM signal with BPSK subcarriers," IEEE Commun. Lett., vol. 5, no. 5, pp. 185-187, May 2001.