About the capacity of OFDM modems in radio channels with signal jamps
- Authors: Lozhkin L.1, Tyazhev A.1
-
Affiliations:
- Povolzhskiy State University of Telecommunications and Informatics
- Issue: Vol 23, No 1 (2020)
- Pages: 100-105
- Section: Articles
- URL: https://journals.ssau.ru/pwp/article/view/7820
- DOI: https://doi.org/10.18469/1810-3189.2020.23.1.100-105
- ID: 7820
Cite item
Full Text
Abstract
The article analyzes the bandwidth of OFDM modems in radio channels with signal fading caused by multipath propagation of waves from a transmitter to a receiver. It is shown that the transmission rate of digital stream B or the throughput of OFDM modems in radio channels with signal fading increases with an increase in the number of OFDM modem subcarriers equal to the number of processing points of the FFT processor, with an increase in the number of signal modulation positions of each modem subcarrier and with a decrease in the duration of signal wounds. In this case, the processing time by the FFT processor of the entire set of points equal to the number of subcarriers in OFDM modems should be less than the symbol duration on each modem subcarrier.
About the authors
L.D. Lozhkin
Povolzhskiy State University of Telecommunications and Informatics
Author for correspondence.
Email: leon.lozhkin@yandex.ru
A.I. Tyazhev
Povolzhskiy State University of Telecommunications and Informatics
Email: tyagev@psati.ru
References
- Balashov V.A., Vorobienko P.P., Ljahovetskij L.M. Transmission Systems Harmonic Orthogonal Signals. Moscow: Ekotrenz, 2012, 226 p. (In Russ.)Vishnevskij V., Portnoj S., Shahnovich I. Encyclopedia Wimax. Path to 4G. Moscow: Tehnosfera, 2009, 470 p. (In Russ.)Tjazhev A.I. Optimization of Digital Detectors in the Receivers on the Minimum Computational Cost. Samara: Izdatel’stvo PIIRS, 1994, 256 p. (In Russ.)Tjazhev A.I., Mishin D.V. Comparative evaluation of computational costs when implementing OFDM digital modems based on DRGs and FFT. Prilozhenie k zhurnalu Infokommunikatsionnye tehnologii, 2011, no. 8, pp. 32–38. (In Russ.)Uidrou B., Stirnz S. Adaptive Signal Processing. Moscow: Radio i svjaz’, 1989, 440 p. (In Russ.)Sergienko A.B. Digital Signal Processing. Saint Petersburg: Piter, 2006, 751 p. (In Russ.)Karjakin V.L. Digital TV: educ. book. for high schools. Moscow: Solon-Press, 2013, 448 p. (In Russ.)