"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 2, 2018

contents             full text in Russian (pdf)   

Simulation modeling of telecommunication systems of high-speed data transmission by atmospheric radio channel in a clean atmosphere with the help of millimeter waves in integrated digital communication systems
 

G. A. Andreev 1
, M. N. Andrianov 2, D. A. Korbakov 1, V. N. Pozhidayev 1


 1 Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Mokhovaya 11-7, Moscow 125009, Russia

2 Astro Space Center of Lebedev Physical Institute of Russian Academy of Sciences, Profsoyuznaya 84/32, Moscow, 117997, Russia 

 

The paper is received on February 15, 2018

 

Abstract. An algorithm for intermittent communication in channels with lognormal fading is proposed, which reduces the probability of erroneous reception. It is established that the use of intermittent communication reduces the probability of erroneous reception of signals. The gain in noise immunity increases with the dispersion of the communication channel and the average value of the signal-to-noise ratio. The algorithm effectively operates in the time duplex mode, when the envelopes of the signals of both directions are correlated. By the level of the received signals, the relative level of signals at the opposite end of the radio link is calculated and due to this, it is possible to determine the moments of switching on and off of its transmitter.

Data is only transmitted when the signal levels are higher than the specified threshold level at the receiver input. It has been established that if this level is chosen to be a multiple of the mean value, then the radio link utilization factor and data rate are fixed, while they depend only on the variance of lognormal fluctuations. Varying the threshold level, you can implement at least two-criteria optimization of data transfer. Increasing the threshold level increases the noise immunity of the transmission, but reduces the speed and vice versa. It is established that the gain from the application of the intermittent communication algorithm increases with the increase in the dispersion and the signal level. The intermittent communication algorithm will be reliable for any probability density of the signal envelope fluctuations, for example in millimeter-wave if dispersion more than unit, then probably density is not lognormal. In this case, the histogram of the probability density, then the variance, the mean value and the mean square are determined and a decision is made to select the threshold level according criteria the error probability and the data rate.

Key words: millimeter waves, telecommunication systems, communication systems, wireless Internet, an anti-noise signal.

References

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For citation:

G.A.Andreev,  M.N.Andrianov, D.A.Korbakov, V.N.Pozhidayev. Simulation modeling of telecommunication systems of high-speed data transmission by atmospheric radio channel in a clean atmosphere with the help of millimeter waves in integrated digital communication systems. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 2. Available at http://jre.cplire.ru/jre/feb18/8/text.pdf.