Journal of Radio Electronics. eISSN 1684-1719. 2023. №11
ContentsFull text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2023.11.2
APPLICATION OF SDR TECHNOLOGY
TO INCREASE INTERFERENCE IMMUNITY:
EXPERIMENTAL STUDY OF THE CHANNEL
WITH OFDM MODULATION IN GNU RADIO
S.YU. Ganigin, A.S. Nechaev, V.V. Kiyashchenko, M.M. Golubeva, E.S. Zhuravleva
Samara State Technical University,
443001, Russian Federation, Samara, Molodogvardeiskaya str., 244
The paper was received August 1, 2023
Abstract. The article presents a comprehensive analysis of multiplexing techniques, with a specific focus on OFDM. OFDM is a transmission method that employs multiple carriers to achieve high data transfer rates. The article provides a thorough explanation of the fundamental concepts, as well as an in-depth discussion on the various applications, technologies, and modulations associated with OFDM. The primary objective of the study is to investigate the implementation of an OFDM communication system using SDR technology. This involves simulating a radio channel to emulate real-world conditions and evaluating the system's performance in terms of packet reception over an actual radio channel. The use of SDR offers several advantages, such as flexibility, adaptability, and cost-effectiveness. Throughout the research, a detailed analysis of the benefits and limitations of OFDM and SDR is conducted, and potential solutions to overcome the identified drawbacks are proposed. The selection of this research direction is motivated by the significant advantages offered by OFDM and SDR, particularly in terms of channel capacity and cost-efficiency. To validate the theoretical concepts and evaluate the practical implementation, a prototype of the OFDM communication system is developed using GNU Radio, an open-source software platform known for its versatility and extensive capabilities. By examining the performance and feasibility of the OFDM communication system implemented with SDR technology, the study aims to provide valuable insights into the advantages, challenges, and potential enhancements in utilizing OFDM and SDR for multiplexing applications.
Key words: OFDM, SDR, multiplexing, frequency division, noise immunity, channel capacity.
Financing: The research was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation within the framework of the state task (theme no. AAAAA12-2110800012-0).
Corresponding author: Zhuravleva Elena Sergeevna, es_job@list.ru
References
1. Kusaikin D. Simply about the complex: OFDM modulation: [Electronic resource]. URL: https://nag.ru/material/30600 (Accessed: 05/30/2023)
2. The use of OFDM signals (orthogonal frequency division multiplexing, which uses a large number of closely spaced orthogonal subcarriers) in wireless communication: [Electronic resource]. URL: https://hub.exponenta.ru/post/ispolzovanie-signalov-ofdm-multipleksirovanie-s-ortogonalnym-chastotnym-razdeleniem-kanalov-kotoraya-ispolzuet-bolshoe-kolichestvo-blizko-raspolozhennykh-ortogonalnykh-podnesushchikh-v-bespro (Accessed: 05/30/2023)
3. OFDM – digital modulation technology in WiMax and LTE networks: [Electronic resource]. URL: https://habr.com/ru/company/yota/blog/119319/ (Accessed: 05/30/2023)
4. Kovalev V.V., Seletskaya O.YU., Pokamestov D.A. Formation and processing of OFDM signals // Young scientist. – 2016. – no. 14. – p. 151-154.
5. Shorin O.A., Bokk G.O. Equalizer for correction of multi-Doppler distortions of OFDM signals in LTE and McWILL networks // Collection of materials (abstracts). – 2016. – P. 4.
6. Kot M.A., Katts A.A., Gorbina E.V. Use of OFDM modulation, EUROPEAN RESEARCH. – 2016. – p. 111-114.
7. Okhrimenko V. Narrowband PLC technology: OFDM modulation // Time of Electronics. – 2010. – no. 9. – P. 42.
8. Yuz'kiv R.R. et. al. Investigation of the recovery efficiency of partial duration QAM symbols in an OFDM signal, Computer Optics. – 2020. – T. 44. – No. 1. – p. 60-66.
9. Mamchev G.V. Fundamentals of radio communication and television. – 2006.
10. Quispe J.L., Ruiz J.T., Meloni L. An SDR implementation of an OFDM transmitter and receiver in GNU Radio. – 2017.
11. Anjana C. et al. An experimental study on channel estimation and synchronization to reduce error rate in OFDM using GNU radio //Procedia Computer Science. – 2015. – Т. 46. – С. 1056-1063.
12. GNU Radio Wiki: [Electronic resource]. URL: https://wiki.gnuradio.org/ (Accessed: 05/30/2023)
13. Making a modem: transmitting digital data over the air using OFDM and GNU Radio: [Electronic resource]. URL: https://habr.com/en/post/497638/ (Accessed: 05/30/2023)
For citation:
Ganigin S.YU., Nechaev A.S., Kiyashchenko V.V., Golubeva M.M., Zhuravleva E.S. Application of SDR technology to increase interference immunity: experimental study of the channel with OFDM modulation in GNU RADIO. // Journal of Radio Electronics. – 2023. – №. 11. https://doi.org/10.30898/1684-1719.2023.11.2 (In Russian)