G-OFDM Variants Evaluation for Transmitter and Receiver Implementation

N.M.A.E.D. Wirastuti, J.M. Noras

Abstract


Orthogonal Frequency Division Multiplexing (OFDM) is chosen as a multiplexing technique and broadly used in today’s radiocommunication environments to overcome spectrum insufficiency. In current OFDM applications, the IDFT/DFT algorithms are used for modulation and demodulation, efficiently implemented using the IFFT/FTT. The IFFT and FFT are some of the main components of OFDM systems, requiring intensive computation, especially for a high number of sub-channels. Reducing the computational burden of the IFFT/FFT would offer an advantage in reducing the total OFDM system complexity.  In this proposed system, the idea of implementing the very fast Fourier transform (VFFT) in OFDM (later, it is called G-OFDM) is based on a trade-off between performance and complexity. The implementation complexity of G-OFDM is lower than OFDM. However, there is a performance cost. G-OFDM has been studied both analytically and in simulation over the AWGN channel. In particular, performance is marred by the non-uniformity of SNR among sub-carriers. In this study, it was proposed two G-OFDM variants called G1-OFDM and G2-OFDM. G1-OFM is the least complex among all G-OFDM scenarios but gives the worst performance, while G2-OFDM gives the best performance but is the most complex. The results show that the performance of G-OFDM and its variants can be improved through the application of different values of n-quantization levels. In other words, using n-quantization levels, we can decrease the processing loss of the G system.

Keywords


Fast fourier transform; OFDM; AWGN channel; very fast fourier transform.

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References


R. Nissel, S. Schwarz and M. Rupp, "Filter Bank Multicarrier Modulation Schemes for Future Mobile Communications," in IEEE Journal on Selected Areas in Communications, vol. 35, no. 8, pp. 1768-1782, Aug. 2017, doi: 10.1109/JSAC.2017.2710022.

J. Choi, "On the Error Rate Analysis of Coded OFDM Over Multipath Fading Channels," in IEEE Wireless Communications Letters, vol. 8, no. 2, pp. 536-539, April 2019, doi: 10.1109/LWC.2018.2878820.

NMAED Wirastuti, CCW Emehel,” Handover Scenarios for Mobile WiMAX and Wireless LAN Heterogeneous Network”, Indonesian Journal of Electrical Engineering and Computer Science vol. 12, no. 8, 2014.

G. Bournaka, M. Ummenhofer, D. Cristallini, J. Palmer and A. Summers, "Experimental Study for Transmitter Imperfections in DVB-T Based Passive Radar," in IEEE Transactions on Aerospace and Electronic Systems, vol. 54, no. 3, pp. 1341-1354, June 2018, doi: 10.1109/TAES.2017.2785518.

A. Makki, A. Siddig, M. M. Saad, C. J. Bleakley and J. R. Cavallaro, "High-resolution time of arrival estimation for OFDM-based transceivers," in Electronics Letters, vol. 51, no. 3, pp. 294-296, 5 2 2015, doi: 10.1049/el.2014.3677.

S. R. Band, M. S. Dorle and S. S. Dorle, "BER performance of WIMAX system using wavelet packet modulation technique," 2016 World Conference on Futuristic Trends in Research and Innovation for Social Welfare (Startup Conclave), Coimbatore, 2016, pp. 1-5, doi: 10.1109/STARTUP.2016.7583917.

N. Sharma, I. Deb, A. Jain and B. Bhattacharyya, "Physical Layer Performance Analysis of MIMO-WiMAX on Simulink," 2018 International Conference on Communication and Signal Processing (ICCSP), Chennai, 2018, pp. 979-983, doi: 10.1109/ICCSP.2018.8524293.

I. Lazov, "Entropy Analysis of Broadband Wireless Access Systems," in IEEE Systems Journal, vol. 11, no. 4, pp. 2366-2373, Dec. 2017, doi: 10.1109/JSYST.2015.2456941.

I W Widhiada, I N Budiarsa, I M Widiyarta and T Coglitore,” Comparison of PID and fuzzy logic to control the motions of robotic prosthetic limbs”, IOP Conference Series: Materials Science and Engineering, Volume 673, Broad Exposure to Science and Technology 2019 (BEST2019), Bali, Indonesia, doi:10.1088/1757-899X/673/1/012109.

W. Widhiada, T. G. T. Nindhia, and I. N. Budiarsa , “Design of The Bionic Robot Hand with Electromyography Smart Sensor based on MATLAB/Simulink”, International Journal of Mechanical Engineering and Robotics Research Vol. 9, No. 8, August 2020, pp.1122-1127, doi: 10.18178/ijmerr.9.8.1122-1127.

Y. A. Al-Jawhar, K. N. Ramli, A. Mustapha, S. A. Mostafa, N. S. Mohd Shah and M. A. Taher, "Reducing PAPR With Low Complexity for 4G and 5G Waveform Designs," in IEEE Access, vol. 7, pp. 97673-97688, 2019, doi: 10.1109/ACCESS.2019.2930121.

I. Selinis, K. Katsaros, M. Allayioti, S. Vahid and R. Tafazolli, "The Race to 5G Era; LTE and Wi-Fi," in IEEE Access, vol. 6, pp. 56598-56636, 2018, doi: 10.1109/ACCESS.2018.2867729.

K. Jallouli, M. Mazouzi, A. B. Ahmed, A. Monemi and S. Hasnaoui, "Multicore MIMO-OFDM LTE Optimizing," 2018 International Conference on Internet of Things, Embedded Systems and Communications (IINTEC), Hamammet, Tunisia, 2018, pp. 166-170, doi: 10.1109/IINTEC.2018.8695290.

N. M. A. E. D. Wirastuti, Ni Putu Lintang Anggitiadewi, Nyoman Pramaita, “Pulse shaping methods for inter carrier interference reduction in OFDM system”, Telkomnika, vol. 18, no. 5, pp. 2276-2283, 2020, doi: http://dx.doi.org/10.12928/telkomnika.v18i5.13840.

S. J. Shepherd et al., "A Lower Complexity Discrete Fourier Transform", Mathematics Today, vol. 39, no. 5, pp. 150-156, October 2003.

S. J. Shepherd et al., "The Very Fast Fourier Transform  A Tool for Science in the 21st Century, ICTAA Conference, 2004.

D. L. Rani, M. Bharathi and N. Padmaja, "Performance Comparison of FFT, DCT, DWT and DDDWT-OFDM in Rayleigh Channel," 2019 International Conference on Smart Systems and Inventive Technology (ICSSIT), Tirunelveli, India, 2019, pp. 392-394, doi: 10.1109/ICSSIT46314.2019.8987953.

Mannan and A. Habib, "Adaptive processing of image using DWT and FFT OFDM in AWGN and Rayleigh channel," in 2017 International Conference on Communication, Computing and Digital Systems (C-CODE), Islamabad, 2017, pp. 346-350, doi: 10.1109/CCODE.2017.7918955.

J. Lee and H. Ryu, "Design and Comparison of Discrete Wavelet Transform Based OFDM (DWT-OFDM) System," in 2018 Tenth International Conference on Ubiquitous and Future Networks (ICUFN), Prague, 2018, pp. 881-885, doi: 10.1109/ICUFN.2018.8437028.

M. S. Sheela, T. P. Surekha, and K. R. Arjun, "Analysis of BER in OFDM using Wavelet and FFT based Method," in 2017 International Conference on Current Trends in Computer, Electrical, Electronics and Communication (CTCEEC), Mysore, 2017, pp. 473-476, doi: 10.1109/CTCEEC.2017.8455191.

S. Baig, H. Muhammad Asif, T. Umer, S. Mumtaz, M. Shafiq, and J. Choi, "High Data Rate Discrete Wavelet Transform-Based PLC-VLC Design for 5G Communication Systems," IEEE Access, vol. 6, pp. 52490-52499, 2018, doi: 10.1109/ACCESS.2018.2870138.

Ni Made Ary Esta Dewi Wirastuti, Ida Bagus Dharma Dhyaksa, “Transformasi Wavelet dengan Teknik Clipping Filtering untuk Mereduksi PAPR pada OFDM”, Jurnal Teknik Elektro Vol. 12 No. 1 7 Januari - Juni 2020.

M. Chafii, J. P. Coon and D. A. Hedges, "DCT-OFDM With Index Modulation," in IEEE Communications Letters, vol. 21, no. 7, pp. 1489-1492, July 2017, doi: 10.1109/LCOMM.2017.2682843.

C. He, A. Cao, L. Xiao, L. Zhang, P. Xiao and K. Nikitopoulos, "Enhanced DCT-OFDM System With Index Modulation," in IEEE Transactions on Vehicular Technology, vol. 68, no. 5, pp. 5134-5138, May 2019, doi: 10.1109/TVT.2019.2893684.

Zhenlei Zhou, Bangjiang Lin, Xuan Tang, Sushank Chaudhary, Chun Lin, and Haiguang Zhang "Performance comparison of DFT-OFDM, DCT-OFDM, and DWT-OFDM for visible light communications", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104822 (14 February 2019); https://doi.org/10.1117/12.2522838.

Z. A. Abbas, N. B. Sulaiman, N. A. M. Yunus, W. Z. Wan Hasan and M. K. Ahmed, "An FPGA implementation and performance analysis between Radix-2 and Radix-4 of 4096 point FFT," 2018 IEEE 5th International Conference on Smart Instrumentation, Measurement and Application (ICSIMA), Songkla, Thailand, 2018, pp. 1-4, doi: 10.1109/ICSIMA.2018.8688777.

M. Patrikar and V. Tehre, "Design and power measurement of different points FFT using Radix-2 algorithm for FPGA implementation," 2017 International conference of Electronics, Communication and Aerospace Technology (ICECA), Coimbatore, 2017, pp. 190-195, doi: 10.1109/ICECA.2017.8203669.

P. P. Vinchurkar, S. V. Rathkanthiwar and S. M. Kakde, "HDL Implementation of DFT Architectures Using Winograd Fast Fourier Transform Algorithm," 2015 Fifth International Conference on Communication Systems and Network Technologies, Gwalior, 2015, pp. 397-401, doi: 10.1109/CSNT.2015.147.

N. M. A. E. D. Wirastuti, J. M. Noras and S. M. R. Jones, "Evaluation of the very fast fourier transform applied to OFDM," 2005 The 2nd IEE/EURASIP Conference on DSPenabledRadio (Ref. No. 2005/11086), London, UK, 2005, pp. 12-12/6, doi: 10.1049/ic:20050382.




DOI: http://dx.doi.org/10.18517/ijaseit.11.4.14783

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