 |
| Signals and Telecommunications Journal |
| New Efficient PAPR Reduction Schemes in LTE OFDM Systems | Saleem Nokaiee, Mohammed M. Alkhawlani
University of Science and Technology, Yemen | | Abstract: Orthogonal frequency division multiplexing (OFDM) is a prominent, new multicarrier modulation technology used with most 4G wireless communication systems. It was configured with MIMO to transmit very high rates of digital information with enhanced performance and speed. However, OFDM faced high peak to average power ratio (PAPR) issue at the transmitter. In this paper, a new companding method called advanced exponential companding (AEC) is proposed to provide better PAPA and BER performance than standard exponential companding (EC) and Mu-law companding while keeping constant average power before and after companding process. In addition, a new efficient hybrid scheme that is containing Zaddoff Chu Matrix Transform (ZCT) precoding and the proposed AEC companding is developed. The new scheme lessens the signal distortion caused by AEC companding and gives a great improvement in both PAPR & BER performance in comparison with AEC in both LTE SISO-OFDM and LTE MIMO-OFDM systems. It produces high PAPR performance with slight SNR loss at 10^-3 BER against ZCT precoding with LTE MIMO-OFDM system. It offers the best results in terms of PAPR & BER against those related existing hybrid methods, namely; discrete hartley transform (DHT) precoding + Mu-law companding, Zadoff -chu matrix transform (ZCT) + Mu-law companding, Walsh Hadamard Transform (WHT) precoding + Mu-law companding, Walsh Hadamard Transform (WHT) precoding + exponential companding (EC), and discrete cosine transform (DCT) precoding + Mu-law companding for LTE SISO-OFDM system. | | Keywords: Advanced Exponential Companding (AEC), Zaddoff Chu Matrix Transform (ZCT) Precoding, Orthogonal Frequency Division Multiplexing (OFDM), Peak to Average Power Ratio (PAPR) New Efficient PAPR Reduction Schemes in LTE OFDM Systems |
| DOI:https://doi.org/10.6025/stj/2019/8/2/39-53 | | Full_Text PDF 3.91 MB Download: 505 times | References:
[1] Shu, S., Qu, D., Li, L., Jiang, T. (2015). Invertible subset QC-LDPC codes for PAPR reduction of OFDM signals, IEEE Transactions on Broadcasting, 61, 290-298.
[2] Naidu, G., Rao, D. S., Prasad, D. (2015). Improved performance of OFDM systems with reduced PAPR based on channel coding techniques, In: Electrical, Electronics, Signals, Communication and Optimization (EESCO), 2015 International Conference on, 2015, 1-6.
[3] Shiragapur, B. K., Wali, U. (2016). Peak-to-Average Power ratio reduction using coding and hybrid techniques for OFDM system, ICTACT Journal on Communication Technology, vol. 7.
[4] Bouaziz, S., Rekkal, K. (2015). A PAPR reduction for STBC MIMO-OFDM systems in 4G wireless communications using PTS scheme, In: New Technologies of Information and Communication (NTIC), 2015 First International Conference on, 2015, 1-5.
[5] Vittal, M., Naidu, K. R. (2017). A novel reduced complexity optimized PTS technique for PAPR reduction in wireless OFDM systems, Egyptian Informatics Journal, 18, 123-131.
[6] Das, J., Bansode, R. (2016). PAPR Reduction using PTS-PSO technique for 16× 16 MIMO-OFDM Systems with 16-QAM, Global Journal of Computer Science and Technology, vol. 15.
[7] Patil, P. S., Kota, P., Gaikwad, A. (2016). Study of PTS based technique to reduce PAPR in SFBC MIMO OFDM system with reduced complexity, International Journal, vol. 5.
[8] Hung, H.-L., Huang, Y.-F., Wei, C.-C., Chen, R.-C. (2016). Performance of PTS-Based Firefly Algorithm Scheme for PAPR Reduction in SFBC MIMO-OFDM Communication Systems, In: 2016 International Symposium on Computer, Consumer and Control (IS3C), 2016, 854-857.
[9] Rangaswamy, M., Ravikumar, A., Gayathri, K., Yamuna, K. (2016). An Effective Approach for Peak Average Power Ratio Reduction in Multi input Multioutput OFDM systems.
[10] Haque, S. S., Mowla, M. M., Hasan, M. M., Bain, S. K. (2015). An algorithm for PAPR reduction by SLM technique in OFDM with hadamard matrix row factor, In: Electrical Engineering and Information Communication Technology (ICEEICT), 2015 International Conference on, 2015, 1-7.
[11] Taspinar, N., Yildir1m, M. (2015). A Novel Parallel Artificial Bee Colony Algorithm and Its PAPR Reduction Performance Using SLM Scheme in OFDM and MIMO-OFDM Systems, IEEE Communications Letters, 19, 1830-1833.
[12] Sohn, I. (2016). New SLM scheme to reduce the PAPR of OFDM signals using a genetic algorithm, ICT Express, 2, 63-66.
[13] Tören, M., Çiflikli, C. (2016). Comparison of Reduction Methods for Peak-to-Average-Power-Ratio (PAPR) in MIMO-OFDM Systems with a New Approach, Acta Physica Polonica A, 130, 417-421.
[14] Poudel, B., Mishra, B. (2016). Performance Analysis of PAPR Reduction in 4 × 4 Spatially Multiplexed MIMO-OFDM System using SLM and Optimum-PTS Techniques, Journal of Telecommunications System and Management, 5, 2167-0919.100012, 2016.
[15] Gamage, H., Rajatheva, N., Latva-aho, M. (2016). High PAPR Sequence Scrambling for Reducing OFDM Peak-to-Average Power Ratio, in European Wireless 2016; 22th European Wireless Conference, 2016, 1-5.
[16] Chakraborty, M. K. (2015). Reduction of Peak Power Average Ratio in OFDM System Using Clipping.
[17] Singh, S., Kumar, A. (2016). Performance Analysis of Adaptive Clipping Technique for Reduction of PAPR in Alamouti Coded MIMO-OFDM Systems, Procedia Computer Science, 93, 609-616.
[18] Vangala, S., Sundru, A. (2016). Adaptive Clipping Active Constellation Extension for PAPR Reduction of OFDM/OQAM System, Procedia Computer Science, 93, 617-623.
[19] Kota, P., Gaikwad, A., Patil, B. (2015). BER analysis of PAPR reduction techniques in SFBC OFDM system: A review, in 2015 International Conference on Information Processing (ICIP), 2015, 108-113.
[20] Shafter, E., Rao, R. K. (2016). A Comparison between SLM, PTS, and CF Schemes for the Reduction of PAPR of OFDM System with CPM Mappers, IAENG International Journal of Computer Science, 43.
[21] Jamadar, M. N., Patil, S. (2015). Performance Improvement in MIMO-OFDM System by Papr Reduction, International Journal for Innovative Research in Science and Technology, 2, 14-22.
[22] Ramaswamy, T., Reddy, K. C. (2016). Low Complexity Iterative Piece-Wise Companding Transform for Reduction of PAPR in MIMO OFDM Systems, Indian Journal of Science and Technology, 9.
[23] Das, M., Ray, M. K., Lokhande, A., Salunke, D. (2016). A PAPR Reduction of OFDM Signal by using Nonlinear Companding Transform, International Journal of Engineering Science, 2893.
[24] AL-Hashmi, Z. S. H. (2015). An Overview : Peak to Average Power Ratio (PAPR) in OFDM system using some new PAPR techniques (with matlab code), Engineering, (October 3).
[25] Bindu, B. A. H., Chandrika, O. M. (2016). Combined DCT and Companding for PAPR Reduction in OFDM Signals, International Journal for Innovative Research in Science and Technology, 2, 730-735.
[26] Rao, M. N., Naveen, V. J., Kishore, K. K. (2016). Performance analysis of Piecewise linear Companding with various precoders for PAPR Reduction of OFDM Signals.
[27] Ajay, T., Krishna, K. M. (2016). A Hybrid technique for PAPR Reduction of OFDM using DHT Precoding with Piecewise Linear Companding, 1 (8).
[28] Ghahremani, R., Shayesteh, M. G. (2014). BER performance improvement and PAPR reduction in OFDM systems based on combined DHT and μ - Law companding, In: Electrical Engineering (ICEE), 2014 22nd Iranian Conference on, 2014, 1483-1487.
[29] Virdi, J., Kumar, S. (2013). PAPR Reduction Based on Precoding Techniques with Companding in OFDM Systems, International Journal of Scientific & Engineering Research, 4, 1064-1070.
[30] Elmaroud, B., Faqihi, A., Abbad, M., Aboutajdine, D. (2014). PAPR reduction of FBMC signals by combining exponential companding and hadamard transforms, In: Networks, Computers and Communications, the 2014 International Symposium on, 2014, 1-4. |
|
|
|
|
|
|
Author Rights 
