PERFORMANCE ASSESSMENT OF THROUGHPUT IN A 5G SYSTEM

(Received: 20-May-2020, Revised: 11-Jul.-2020 and 28-Jul.-2020 , Accepted: 3-Aug.-2020)
This paper discusses the throughput of a fifth generation (5G) new radio (NR) system. The main goal of this research is to provide and develop a pathway for improving the throughput in the 5G system by investigating and controlling certain effective factors. The studied factors in this paper are the used modulation technique, the used subcarrier spacing in the default Clustered Delay Line (CDL) channel and the existence of a reflector in a custom CDL channel profile. It is found that the performance of the throughput is improved for larger subcarrier spacing and lower-order modulation technique. The existence and position of the reflector located between the transmitter and the receiver will be investigated relative to throughput performance in detail. Both fixed and changeable locations of the reflectors are considered in order to reach an optimal value of throughput. The results show that the existence of the reflector achieves a better throughput value compared to the one with no reflector. In the presence of a reflector and at a subcarrier spacing of 30 kHz, the throughput can reach 100% of throughput at 0 dB of signal to noise ratio (SNR) compared with only 40% at 0 dB for no-reflector case.

[1] Tutorialspoint.com, "5G–Challenges," Tutorialspoint Online Education, [Online], Available: https://www.tutorialspoint.com/5g/5g_challenges.

[2] P. Trakadas et al., "Hybrid Clouds for Data-intensive, 5G-enabled IoT Applications: An Overview, Key Issues and Relevant Architecture, " Sensors (MDPI), vol. 19, no. 16, p. 3591, August 2019.

[3] P. K. Gkonis, P. Trakadas and D. I Kaklamani, "A Comprehensive Study on Simulation Techniques for 5G Networks: State-of-the-Art Results, Analysis and Future Challenges," Electronics, vol. 9, no.3, p. 468, March 2020. 

[4] C. Nast, "5G Is Coming and It's Fortified with Fiber," [Online], Available: https://www.wired.com/story/5g-is-coming-fortified-with-fiber/. [5] A. C. Situmorang, D. Gunawan and V. G. Anggraini, "5G Trials on 28 GHz Band in Indonesia," Proc. of the 28th Wireless and Optical Communications Conference (WOCC), pp. 1-5, DOI: 10.1109/WOCC.2019.8770687, Beijing, China, 2019.

[6] W. Khawaja, O. Ozdemir, Y. Yapici, F. Erden and I. Guvenc, "Coverage Enhancement for NLOS mmWave Links Using Passive Reflectors," IEEE Open Journal of the Communications Society, vol. 1, pp. 263-281, 2020, DOI: 10.1109/OJCOMS.2020.2969751, 2019.

[7] O. Ozdemir, F. Erden, I. Guvenc, T. Yekan and T. Zarian, "28 GHz mmWave Channel Measurements: A Comparison of Horn and Phased Array Antennas and Coverage Enhancement Using Passive and Active Repeaters, " arXiv:2002.00121, [Online], Available: https://arxiv.org/abs/2002.00121, February 2020.

[8] ETSI.org, "TS 38.101-1: NR; User Equipment (UE) Radio Transmission and Reception; Part 1: Range 1 Standalone," [Online], Available: https://www.etsi.org/deliver/etsi_ts/138100_138199/13810101/15.03. 00_60/ts_13810101v150300p.pdf.

[9] 3gpp.org, "Detailed Configuration of F-OFDM and W-OFDM for LLS Evaluation," 3GPP RAN WG1 #86, Spreadtrum Communications, R1-166999, [Online], Available: https://www.3gpp.org/DynaReport/TDocExMtg--R1-86--31663.htm, August 2016.

[10] 3GPP TS 38.214. NR, "Physical Layer Procedures for Data, Part 5: Physical Downlink Shared Channel Related Procedures (Release 15)," 3gpp Technical Specification Group Radio Access Network, [Online], Available: ttps://www.etsi.org/deliver/etsi_ts/138200_138299/138214/15.02.00_60/ts_138214v150200p.pdf, 2018.

[11] 3GPP TS 38.211. NR, "Physical Channels and Modulation, Part 4: Frame Structure and Physical Resources (Release 15)," 3rd Generation Partnership Project; Technical Specification Group Radio Access Network," [Online], Available: https://www.etsi.org/deliver/etsi_ts/138200_138299/138211/15.02.00_60/ ts_138211v150200p.pdf, 2018.

[12] 3GPP TS 38.901, "Study on Channel Model for Frequencies from 0.5 to 100 GHz, Part 7: Channel Model(s) for 0.5-100 GHz (Release 14)," 3rd Generation Partnership Project; Technical Specification Group Radio Access Network, [Online], Available: https://www.etsi.org/deliver/etsi_tr/138900_138999/138901/14.00.00_60/tr_138901v140000p.pdf, 2017.

[13] M. Kerker, Electromagnetic Waves in the Scattering of Light and Other Electromagnetic Radiation, New York, NY, USA: Academic Press, Ch. 2, pp. 8–26, 1969.

[14] S. N. Ghosh, Energy Flow and Boundary Conditions, in Book: Electromagnetic Theory and Wave Propagation, 2nd Ed., New York, NY, USA: CRC Press, Ch. 3, pp. 37–38, 2002.

[15] A. Ghosh and R. Ratasuk, Essentials of LTE and LTE-A, Cambridge, Cambridge University Press, 2011.

[16] S. Le Goff, A. Glavieux and C. Berrou, "Turbo-codes and High Spectral Efficiency Modulation," Proceedings of International Conference on Communications (ICC/SUPERCOMM'94), vol. 2, pp. 645-649, DOI: 10.1109/ICC.1994.368804, New Orleans, LA, USA, 1994.

[17] S. M. Saraireh and A. M. Matarneh,"Higher Level Security Approach for Data Communication System Based on AES Cryptography and DWT Steganography," Jordanian Journal of Computers and Information Technology (JJCIT), vol. 2, no. 3, pp. 179-193, December 2016.