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ESTIMATION THE NOISE IMMUNITY OF CONTINUOUS PHASE MODULATION SIGNALS WITH FULL RESPONSE BASED SIMULATION MODEL
Andrey I. Azarov,
Military Academy of the Strategic Missile Forces named after Peter the Great, Balashikha, Russia, azarofff1985@yandex.ru
Evgenyi V. Budarin,
West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, Kaliningrad, Russia, zhenyoker@yandex.ru
Abstract
The problem of spectral load of communication channels is now becoming urgent, which determines the efforts of the world’s leading tech communication companies to search for perspective signals. These signals must ensure compliance with international standards governing the use of frequency bands and the permissible level of out-of-band emissions and the required noise immunity of information transmission. The article deals with the noise immunity of continuous phase modulation signals research. A preliminary estimation is carried out by calculating the Euclidean distances between signals. The estimates of the noise immunity were obtained experimentally. The results of simulation are presented for fixed value of the signal to noise ratio for signals. Modulation indices and phase pulse were taken into account. The results of the study make it possible to emphasize the modulation indices for CPM FR signals, having more noise immunity then the known BPSK and MSK signals. Increasing the noise immunity becomes possible due to intersymbol phase communication. These signals are received according to the Viterbi algorithm. The results of the study show the values of the modulation indices to be of practical interest.
Keywords: noise immunity, continuous phase modulation signals with full response, Euclidean distances, modulation index, bit error probability.
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Information about authors:
Andrey I. Azarov, Cand. Sci. (Engineering) researcher Military Academy of the Strategic Missile Forces named after Peter the Great, Balashikha, Russia.
Evgenyi V. Budarin, engineer of the West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, Kaliningrad, Russia