The authors of this article focus on solving the PAPR problem of FBMC System using improved harmony search optimization methods adopting the hybrid clipping partial transmit sequence concept
The filter bank multicarrier (FBMC) with offset quadrature amplitude modulation (OQAM) is studied by researchers as a key enabler for 5th-generation air interface. Some critical disadvantages which are associated with the FBMC/OQAM system are self-interference, high complexity and high peak to average power ratio (PAPR). This paper concentrates on solving the problem of PAPR which faces the FBMC/OQAM system. Firstly, Harmony Search(HS) optimization is applied to partial transmit sequence (PTS) and Clipping(C) methods to provide the optimal clipping level and optimal phase factor sets and hence a significant PAPR reduction can be achieved. Secondly, using HS optimization of hybrid (PTS) with clipping (HS-hybrid-CPTS) which is used for the PAPR reduction in FBMC/OQAM system. Finally, introducing the enhanced HS (EHS) optimization with few parameters by adjusting the pitch adjustment rate (PAR) and bandwidth of adjustment to be updated dynamically for the hybrid scheme. The enhanced HS optimization improves the convergence and accuracy of the proposed methods to produce lower PAPR. Simulation results show that the efficiency of (EHS) optimization of the hybrid methods between clipping and PTS (EHS hybrid C-PTS) provides better performance of reducing PAPR than that of hybrid clipping PTS (HS hybrid C-PTS) by a percentage of 14%-24%, and better than the two traditional methods by a percentage of 47%-62%. The bit error rate (BER) performance and power spectral density (PSD) of the proposed methods are calculated.
Keywords: FBMC/ OQAM; EHS hybrid C-PTS; PAPR; CCDF; BER.
1. TAŞPINAR, N., et al., PAPR reduction using artificial bee colony algorithm in OFDM systems. Turkish Journal of Electrical Engineering & Computer Sciences, 2011. 19(1): p. 47-58.
2. Gouda, M. and M. Hussien. Partial transmit sequence PAPR reduction method for LTE OFDM systems. in 2013 4th International Conference on Intelligent Systems, Modelling and Simulation. 2013. IEEE.
3. Jiang, T. and Y. Wu, An overview: Peak-to-average power ratio reduction techniques for OFDM signals. IEEE Transactions on broadcasting, 2008. 54(2): p. 257-268.
4. Han, S.H. and J.H. Lee, An overview of peak-to-average power ratio reduction techniques for multicarrier transmission. IEEE wireless communications, 2005. 12(2): p. 56-65.
5. Van Nee, R. and A. De Wild. Reducing the peak-to-average power ratio of OFDM. in Vehicular technology conference, 1998. VTC 98. 48th IEEE. 1998. IEEE.
6. Wang, X., T.T. Tjhung, and C. Ng, Reduction of peak-to-average power ratio of OFDM system using a companding technique. IEEE Transactions on broadcasting, 1999. 45(3): p. 303-307.
7. Park, M., et al. PAPR reduction in OFDM transmission using Hadamard transform. in Communications, 2000. ICC 2000. 2000 IEEE International Conference on. 2000. IEEE.
8. Moharem, M., HYBRID TR-ACE AND SW-TR PAPR REDUCTION TECHNIQUES USING IN FBMC 5G SYSTEMS http://www.medjec.com/papers%20archive/index.html. 2017. Volume 13, No. 1, January 2017 ISSN: 1744-2400: p. 19-30.
9. Moharam, M.H., Gouda, M. and El Hennawy, H.M, Hybrid clipping-PTS using enhanced PSO with Cauchy mutation to reduce PAPR of FBMC 5G systems. Int. J. Systems, Control and Communications, 2019. 10(2): p. forthcoming article
10. Lee, K.S. and Z.W. Geem, A new meta-heuristic algorithm for continuous engineering optimization: harmony search theory and practice. Computer methods in applied mechanics and engineering, 2005. 194(36-38): p. 3902-3933.
11. Amini, P., R. Kempter, and B. Farhang-Boroujeny. A comparison of alternative filterbank multicarrier methods for cognitive radio systems. in Proc. of the SDR Technical Conference and Product Exposition. 2006.
12. Kollár, Z. and P. Horváth, PAPR reduction of FBMC by clipping and its iterative compensation. Journal of Computer Networks and Communications, 2012. 2012.
13. Ochiai, H. and H. Imai, On the distribution of the peak-to-average power ratio in OFDM signals. IEEE transactions on communications, 2001. 49(2): p. 282-289.
14. Prasad, R., OFDM for wireless communications systems. 2004: Artech House.
15. Bulusu, S.S.K.C., Performance Analysis and PAPR Reduction Techniques for Filter-Bank based Multi-Carrier Systems with Non-Linear Power Amplifiers. 2016, Conservatoire national des arts et metiers-CNAM.
16. Zhou, Y., et al., Peak-to-average power ratio reduction for OFDM/OQAM signals via alternative-signal method. IEEE Transactions on Vehicular Technology, 2014. 63(1): p. 494-499.
17. Gouda, M., K.A. Shehata, and M. Hussien, PAPR reduction performance for LTE OFDM systems with different techniques. Signal, 2013. 4: p. 6.
18. Wang, H., et al., Hybrid PAPR Reduction Scheme for FBMC/OQAM Systems Based on Multi Data Block PTS and TR Methods. IEEE Access, 2016. 4(99): p. 4761-4768.
19. Bellanger, M., et al., FBMC physical layer: a primer. PHYDYAS, January, 2010. 25(4): p. 7-10.
20. Farhang-Boroujeny, B., OFDM versus filter bank multicarrier. IEEE signal processing magazine, 2011. 28(3): p. 92-112.
21. Kaiming, L., et al., PAPR reduction for FBMC-OQAM systems using P-PTS scheme. The Journal of China Universities of Posts and Telecommunications, 2015. 22(6): p. 78-85.
22. Kollar, Z., L. Varga, and K. Czimer. Clipping-based iterative PAPR-reduction techniques for FBMC. in OFDM 2012, 17th International OFDM Workshop 2012 (InOWo'12); Proceedings of. 2012. VDE.
23. Ren, S., et al., Sparse PTS scheme based on TR schemes for PAPR reduction in FBMC-OQAM systems. IET Communications, 2018. 12(14): p. 1722-1727.
24. Salehinejad, H. and S. Talebi, PAPR reduction of OFDM signals by novel global harmony search in PTS scheme. International Journal of Digital Multimedia Broadcasting, 2012. 2012.
25. Gao, J., et al., A PAPR reduction algorithm based on harmony research for OFDM systems. Procedia Engineering, 2011. 15: p. 2665-2669.
26. Ameli, K., A. Alfi, and M. Aghaebrahimi, A fuzzy discrete harmony search algorithm applied to annual cost reduction in radial distribution systems. Engineering Optimization, 2016. 48(9): p. 1529-1549.
27. Omran, M.G. and M. Mahdavi, Global-best harmony search. Applied mathematics and computation, 2008. 198(2): p. 643-656.
28. Kalivarapu, J., S. Jain, and S. Bag, An improved harmony search algorithm with dynamically varying bandwidth. Engineering Optimization, 2016. 48(7): p. 1091-1108.
29. Kermani, E.M. and S. Aflaki, PAPR Reduction of OFDM Signals: A Global Harmony Search Approach. International Journal of Research in Wireless Systems, 2013. 2(2).
30. Geem, Z.W., J.H. Kim, and G.V. Loganathan, A new heuristic optimization algorithm: harmony search. simulation, 2001. 76(2): p. 60-68.
31. Lee, K.S. and Z.W. Geem, A new structural optimization method based on the harmony search algorithm. Computers & structures, 2004. 82(9-10): p. 781-798.
32. Geem, Z.W., Music-inspired harmony search algorithm: theory and applications. Vol. 191. 2009: Springer.
33. Hasançebi, O., et al., Performance evaluation of metaheuristic search techniques in the optimum design of real size pin jointed structures. Computers & structures, 2009. 87(5-6): p. 284-302.
34. Saka, M., Optimum design of steel sway frames to BS5950 using harmony search algorithm. Journal of Constructional Steel Research, 2009. 65(1): p. 36-43.
35. Mahdavi, M., M. Fesanghary, and E. Damangir, An improved harmony search algorithm for solving optimization problems. Applied mathematics and computation, 2007. 188(2): p. 1567-1579.
36. Gouda, M.E., et al., USRP Implementation of PTS Technique for PAPR Reduction in OFDM Using LABVIEW.
37. Na, Dongjun, and Kwonhue Choi. "Low papr fbmc." IEEE Transactions on Wireless Communications 17.1 (2017): 182-193.
38. Moharam, Mohamed H., Mamdouh Gouda, and Hadia Elhennawy. "Enhanced Linear Equalization using PSO in FBMC MIMO Systems." Journal of Engineering Science & Technology Review 12.3 (2019).
39. Shaheen, Imad A., et al. "Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform." ICT Express 5.1 (2019): 41-46.
He received the B.S. with an honor's degree in the department of Electronics and Communication, Faculty of Engineering, Misr University for science and technology, Giza, Egypt, in 2009. Mohamed joined Misr University for science and technology (MUST) in the department of Electronics and Communication Engineering in 2009 as a demonstrator. He received M.Sc. degree from Arab Academy For science and technology and maritime (AASTMT) in 2013. He did his M.Sc. in PAPR problem solved in the LTE system. Also, he received Ph.D. degrees from the Ain shams university, Electronics and communication engineering in 2019. His research interests include design and analysis of the Physical layer in all 5G waveform candidates and its application in the wireless communication system.Mohamad has received a six-month scholarship from the Erasmus+ for his Ph.D. in Lucian Blaga Sibiu, Romania. Mohamad has been served as a reviewer for many IEEE conferences, and IEEE transactions on Communications and IEEE Journal in selected areas in Communication (JSAC).
He received the B.Sc. degree in electrical engineering from the Military Technical College, Cairo Egypt in 1981. He received the M.Sc. degree in electrical engineering from the Military Technical College, Cairo, Egypt in 1985. He received the Ph.D. degree in electrical engineering from the UK in 1998. Currently, he is an Assoc. Professor at Misr University for Science and Technology.
She received her B.Sc. and M.Sc. degrees from the Ain Shams University, Cairo, Egypt, in 1972 and 1976, respectively, and the Ph.D. degree from the Technische Uni- versitat Braunschweig, Germany, in 1982. In 1982, she returned to Egypt and joined the Electronics and Communications Engineering Department, Ain Shams University, as an Assistant Professor. She was nominated as an Associate Professor in 1987 and then a Professor in 1992. In 2004, she was appointed as the Vice-Dean for graduate studies and research. In 2005, she was appointed as the Dean of the Faculty of Engineering, Ain Shams University. She has focused her research on microwave circuit design, antennas, microwave communication, and recently wireless communication. She has been the Head of the Microwave Research Laboratory since 1982. She has published more than 100 journal and conference papers and supervised over 50 Ph.D. and M.Sc. students. Professor El Hennawy was the Editor-in-Chief of the Scientific Bulletin of the Faculty of Engineering, Ain Shams University, from August 2004 to August 2005 and is a member of the Industrial Communication Committee in the National Telecommunication Regulatory Authority (NTRA), Educational Engineering Committee in the Ministry of Higher Education, and Space Technology Committee in the Academy of Scientific Research.