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Comparative analysis of the effect of narrow-band interference on cognitive radio communication systems based on synthesized four-position radio signals

Keywords:

S.N. Kirillov – Dr.Sc.(Eng.), Professor, Head of Department of Radio Control and Communications, Ryazan State Radio Engineering University
E-mail: kirillov.lab@gmail.com
A.A. Lisnichuk – Ph.D.(Eng.), Senior Research Scientist, Department of Radio Control and Communications, Ryazan State Radio Engineering University
E-mail: a.a.lisnichuk@gmail.com


The analysis of the effect of narrow-band interference on cognitive radio communication systems was carried out. In these systems, multi-criteria synthesis of radio signals is realized, taking into account the following quality indicators: noise immunity to the action of narrow-band interference and additive «white» Gaussian noise (AWGN); peak-factor (energy efficiency of signals) and the level of out-of-band radiation. To study the realized quality indicators, aggregate of synthesized signals were analyzed. A comparative analysis was carried out with existing systems which using QPSK-signals and narrow-band rejection on the receiving side. It is shown that cognitive radio communication systems based on synthesized four-position signals provide a gain on the noise immunity up to 7 dB in comparison with QPSK signals with harmonic interference rejection.

References:
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  2. Kirillov S.N., Pokrovskij P.S., Lisnichuk A.A. Mnogokriterial'ny'j sintez chety'rexpoziczionny'x radiosignalov na osnove ansamblya kodovy'x posledovatel'nostej v interesax adaptaczii radiosistem peredachi informaczii k strukturny'm pomexam // Radiotexnika. 2016. № 8. S. 117−124.
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June 24, 2020
May 29, 2020

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