Channel Coding for Multimedia Transmission on High-Speed Flying Devices
Communication systems for high-speed flying devices, such as drones and missiles, have performances with error-floor caused by the Doppler effect, which causes inter-carrier interference (ICI) and destroys real-time data transmission. Channel coding cannot reduce error-floors, but channel coding may still achieve performance with turbo-cliff. This paper proposes a broadband communication system for high-speed flying devices using soft 4 quadrature amplitude modulation (4-QAM) modulations with the optimal threshold for practical implementation assuming that the maximum/minimum log-likelihood ratio (LLR) values of ±709. We use orthogonal frequency division multiplexing (OFDM) with low-density parity-check (LDPC) codes as the channel coding scheme and minimum mean squared error (MMSE) equalization. To reduce the computational complexity and to keep the data rate high, we use only a single pilot for the channel estimation. Computer-based simulations for several high speeds are performed to evaluate the performance of the proposed high-speed flying devices system. The bit error rate (BER) performance is evaluated based on LLR under additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels. The results confirmed that the proposed system with the optimal threshold can avoid unstable jumping error with better turbo-cliff and lower error-floor. The maximum speed the system can achieve for BER of 10−2 is 400 km/h. The results of this paper are expected to contribute significantly to the development of communication systems on flying devices.
D. Juniarto, K. Anwar, and D. Arseno, “Communication System for High Speed Flying Devices with Repetition Codes,” in Journal of Measurements, Electronics, Communication, and Systems (JMECS), January 2020.
H. Harada and R. Prasad, Simulation and Software Radio for Mobile Communications. USA: Artech House, Inc., 2002.
J. K. Arthur, T. B. T. C. Aka, and A. Acakpovi, “Comparative Analysis of Orthogonal Frequency Division Modulation and Filter Bank-Based Multicarrier Modulation,” in 2019 International Conference on Communications, Signal Processing and Networks (ICCSPN), 2019, pp. 1–10.
D. Fitriyani, K. Anwar, and D. M. Saputri, “Study on Radio Frequency Profile of Indonesia Digital Television DVB-T2 for Urban Areas.” EAI, 1 2021.
K. Sathananthan and C. Tellambura, “Probability Of Error Calculation Of OFDM Systems With Frequency Offset,” Communications, IEEE Transactions on, vol. 49, pp. 1884 – 1888, 12 2001.
H. Kim, Enhanced Mobile Broadband Communication Systems*, 2020, pp. 239–302.
C. Yang, M. Zhan, Y. Deng, M. Wang, X. H. Luo, and J. Zeng, “Error-correcting Performance Comparison for Polar Codes, LDPC Codes and Convolutional Codes in High-performance Wireless,” in 2019 6th International Conference on Information, Cybernetics, and Computational Social Systems (ICCSS), 2019, pp. 258–262.
S. A. Ghauri, M. E. U. Haq, M. Iqbal, and J. U. Rehman, “Performance Analysis of LDPC Codes on Different Channels,” in 2014 Eighth International Conference on Next Generation Mobile Apps,
Services and Technologies, 2014, pp. 235–240.
K. Arora, J. Singh, and Y. S. Randhawa, “A Survey On Channel Coding Techniques For 5G Wireless Networks,” Telecommunication Systems: Modelling, Analysis, Design and Management, vol. 73, no. 4, pp. 637–663, April 2020. [Online]. Available: https://ideas.repec.org/a/spr/telsys/v73y2020i4d10.1007 s11235-019-00630-3.html
S. Alabady and F. Al-turjman, “Low complexity Parity Check Code for Futuristic Wireless Networks Applications,” IEEE Access, vol. 6, pp. 18 398–18 407, 2018.
C. Y. Akbar Fadhlika and K. Anwar, “Downscaled LDPC Codes for Indonesia Digital Video Broadcasting Terrestrial 2nd Generation (DVB-T2),” in 2019 Symposium on Future Telecommunication Technologies (SOFTT), vol. 1, 2019, pp. 1–6.
A. Syukra, K. Anwar, and D. M. Saputri, “On the Design of Optimal Soft Demapper for 5G NR Wireless Communication Systems,” in 2020 10th Electrical Power, Electronics, Communications, Controls and Informatics Seminar (EECCIS), 2020, pp. 313–318.
GPP, “Physical Channels and Modulation,” in document 3GPP TS 38.211 version 15.7.0, October 2019, p. 14.
S. J. Johnson, Iterative Error Correction: Turbo, Low-Density Parity-Check and Repeat-Accumulate Codes. Cambridge University Press, 2009.
D. Feng, H. Xu, Q. Zhang, Q. Li, Y. Qu, and B. Bai, “Nonbinary LDPC-Coded Modulation System in High-Speed Mobile Communications,” IEEE Access, vol. 6, pp. 50 994–51 001, 2018.
M. Tomlinson, C. J. Tjhai, M. A. Ambroze, M. Ahmed, and M. Jibril, Error-Correction Coding and Decoding: Bounds, Codes, Decoders, Analysis and Applications, 1st ed. Springer Publishing Company, Incorporated, 2018.
ETSI, “Digital Video Broadcasting (DVB); Implementation Guidelines For A Second Generation Digital Terrestrial Television Broadcasting System (DVB-T2) ,” in ETSI TS 102 831 V1.2.1, 2012.
S. Islam, Hasib-Al-Rashid, and M. A. Ullah, “Soft decision multistage threshold decoding with sum-product algorithm,” in 2017 8th International Conference on Computing, Communication and Networking Technologies (ICCCNT), 2017, pp. 1–5.
A. Seraj and D. Yadav, “Evaluation of Flexible SPA Based LPDC Decoder Using Hardware Friendly Approximation Methods,” 2017, student Paper.
R. Jose and A. Pe, “Analysis of Hard Decision and Soft Decision Decoding Algorithms of LDPC codes in AWGN,” in 2015 IEEE International Advance Computing Conference (IACC), 2015, pp. 430–435.
- There are currently no refbacks.
Published by INSIGHT - Indonesian Society for Knowledge and Human Development