Performance of LDPC Codes in Multipath OFDM System
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Abstract
In fifth-generation wireless networks (5G), a significant challenge arises: delivering high-speed data transmission and extensive networking services while maintaining a low bit error rate (BER). To meet the demands of 5G services, Orthogonal Frequency Division Multiplexing (OFDM) emerges as a promising technique for ensuring high-quality communication and an FFT size of 256. Moreover, several channel coding methods have been employed to enhance BER performance. Among these methods, Quasi Cyclic- Low-Density Parity Check (QC-LDPC) has become the established standard for high-speed data transmission in 5G networks. However, implementing these coding methods in conjunction with 5G standard specifications presents various complexities and challenges. In this research, we analyze QC-LDPC in multipath fading using OFDM. The performance of QC-LDPC codes at a BER of 10-3 can be achieved with an SNR of 15 dB for OFDM with QC-LDPC codes and an SNR of 20 dB for OFDM. The inclusion of QC-LDPC coding in the OFDM system significantly improves performance by reducing the required SNR for a BER of 10-3 from 20 dB (uncoded) to 15 dB (coded), a 5 dB reduction. Channel coding with QC-LDPC also enhances system efficiency by consistently decreasing the BER across various SNR values. These results confirm that QC-LDPC coding provides better reliability and performance than the uncoded OFDM system.
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References
[2] I. A. Heider, “Improvement of Fading Channel Modeling Performance for Wireless Channel,” IJECE, vol. 8, no. 3, hlm. 1451, Jun 2018, doi: 10.11591/ijece.v8i3.pp1451-1459.
[3] M. S. Chavan, R. H. Chile, dan S. R. Sawant, “Multipath Fading Channel Modeling and Performance Comparison of Wireless Channel Models”.
[4] R. D. Wahyuningrum, K. Ni’Amah, dan S. Larasati, “Model Kanal 5G dengan Pengaruh Kelembapan pada Frekuensi 3,3 GHz dan Bandwidth 99 MHz Berbasis Convolutional Codes,” ELKOMIKA, vol. 9, no. 4, hlm. 878, Okt 2021, doi: 10.26760/elkomika.v9i4.878.
[5] G. H. Fahreja, K. Ni’amah, dan R. D. Wahyuningrum, “The Effect of Spreading Factor Value on the Number of Gateways in the LoRaWAN Network at Bandung City,” Journal of Communications, vol. 18, no. 12, 2023.
[6] R. D. Indah Permatasari dan Dikko Pramudya, “Model Kanal 5G Di Bawah Pengaruh Human Blockage Pada Frekuensi 3,5 GHz 5G Channel Model Under the Effect of Human Blockage at 3.5 GHz Frequency,” Com, Engine, Sys, Sci, vol. 7, no. 1.
[7] A. Osseiran, Ed., 5G mobile and wireless communications technology. United Kingdom : New York: Cambridge University Press, 2016.
[8] Y. Wu, P. Wang, and J. McAllister, "Programmable Dataflow Accelerators: A 5G OFDM Modulation/Demodulation Case Study," ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2020, pp. 1728-1732.
[9] K. Kleine, J. H. Reed, and A. J. Michaels, "A 256-point Analog Discrete-Time FFT," 2020 IEEE 63rd International Midwest Symposium on Circuits and Systems (MWSCAS), 2020, pp. 966-969.
[10] T. Kanesan, W. P. Ng, Z. Ghassemlooy, and C. Lu, "FFT size optimization for LTE RoF in nonlinear fibre propagation," 2012 8th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2012, pp. 1-5.
[11] E. Konguvel and M. Kannan, "A survey on FFT/IFFT processors for next generation telecommunication systems," J. Circuits Syst. Comput., vol. 27, no. 1, pp. 1830001:1-1830001:21, 2018.
[12] A. Abdulwahhab Mohammed and A. H. Abdulwahhab, "Analysis of potential 5G transmission methods concerning bit error rate," AEU - Int. J. Electron. Commun., 2024.
[13] K. C. Sekhar, R. Scholar, G. Sateesh Kumar, and P. B. T. Krishna, "Employing efficient decoding algorithms to reduce bit error rates in 5G applications and beyond," 2024 IEEE Wireless Antenna and Microwave Symposium (WAMS), pp. 1-3, 2024.
[14] S. Cheng, “Comparative Study on 5G Communication Channel Coding Technology,” dalam Proceedings of the 3rd International Conference on Mechatronics Engineering and Information Technology (ICMEIT 2019), Dalian, China: Atlantis Press, 2019. doi: 10.2991/icmeit-19.2019.13.
[15] V. D. Bodkhe, “Implementation of FFT/IFFT Blocks for Orthogonal Frequency Division Multiplexing (OFDM),” vol. 5, 2018.
[16] S. Belhadj, A. M. Lakhdar, dan R. I. Bendjillali, “Performance comparison of channel coding schemes for 5G massive machine type communications,” IJEECS, vol. 22, no. 2, hlm. 902, Mei 2021, doi: 10.11591/ijeecs.v22.i2.pp902-908.
[17] A. Dutt, S. Bhogate, S. Roy, A. Jagarlapudi, P. Nadgeri, dan D. P. Rathod, “Error-Correcting Codes in 5G and Beyond,” International Journal of Engineering Research, vol. 10, no. 07.
[18] T. Nozaki dan M. Isaka, “LDPC Codes for Communication Systems: Coding Theoretic Perspective,” IEICE Trans. Commun., vol. E105.B, no. 8, hlm. 894–905, Agu 2022, doi: 10.1587/transcom.2021EBI0001.
[19] P. Lavanya, P. Satyanarayana, dan A. Ahmad, “Suitability of OFDM in 5G Waveform – A Review,” Orient. J. Comp. Sci. and Technol, vol. 12, no. Issue 3, hlm. 66–75, Okt 2019, doi: 10.13005/ojcst12.03.01.
[20] S. Venkatesan dan R. A. Valenzuela, “OFDM for 5G: Cyclic prefix versus zero postfix, and filtering versus windowing,” dalam 2016 IEEE International Conference on Communications (ICC), Kuala Lumpur, Malaysia: IEEE, Mei 2016, hlm. 1–5. doi: 10.1109/ICC.2016.7510757.
[21] H. Khodaiemehr dan D. Kiani, “Construction and Encoding of QC-LDPC Codes Using Group Rings.” arXiv, 1 Januari 2017. Diakses: 28 September 2023. [Daring]. Tersedia pada: http://arxiv.org/abs/1701.00210
[22] G. Kongara, C. He, L. Yang, dan J. Armstrong, “A Comparison of CP-OFDM, PCC-OFDM and UFMC for 5G Uplink Communications,” IEEE Access, vol. 7, hlm. 157574–157594, 2019, doi: 10.1109/ACCESS.2019.2949792.
[23] X. Liu, T. Xu, dan I. Darwazeh, “Coexistence of Orthogonal and Non-orthogonal Multicarrier Signals in Beyond 5G Scenarios,” dalam 2020 2nd 6G Wireless Summit (6G SUMMIT), Levi, Finland: IEEE, Mar 2020, hlm. 1–5. doi: 10.1109/6GSUMMIT49458.2020.9083780.
[24] L. Marijanovic, S. Schwarz, dan M. Rupp, “Optimal Numerology in OFDM Systems Based on Imperfect Channel Knowledge,” dalam 2018 IEEE 87th Vehicular Technology Conference (VTC Spring), Porto: IEEE, Jun 2018, hlm. 1–5. doi: 10.1109/VTCSpring.2018.8417548.
[25] S. L. Larasati, Khoirun Ni’amah, dan Zein Hanni Pradana, “Analysis of 5G Network Performance in Line-of-Sight Conditions Using 3.3 GHz Frequency at Sawahan, Surabaya,” JITU, vol. 5, no. 2, hlm. 31–40, Des 2022, doi: 10.56873/jitu.5.2.4892.
[26] P. M. Benson Mansingh, T. J. Titus, dan M. Yuvaraju, “BER ANALYSIS OF CHANNEL CODING TECHNIQUES FOR 5G NETWORKS,” IOP Conf. Ser.: Mater. Sci. Eng., vol. 932, no. 1, hlm. 012091, Sep 2020, doi: 10.1088/1757-899X/932/1/012091.