A.V. Arkhipov1, A.M. Fominykh2, D.A. Romanov3, N.A. Vorobev4, P.V. Luferchik5, A.A. Komarov6, I.S. Povetkin7

1–7 JSC SPE «Radiosvyaz» (Krasnoyarsk, Russia)

1 arkhipov_av@krtz.su, 2,3 dsp@krtz.su, 4 vorobev_na@krtz.su, 5 lpv@krtz.su, 6 komarov_aa@krtz.su, 7 povetkin_is@krtz.su

Portable satellite communication stations are currently in high demand due to their mobility. One of the key parameters of portable stations is their battery life. Increasing battery life requirements for portable satellite communication stations is a pressing issue and necessitates improving the energy efficiency of the equipment. Improving the energy efficiency of modem equipment in communication systems is achieved using more efficient signal-code structures. The object of this paper is to develop a signal-code structure based on polar coding and open-quad phase shift keying (OQPSK). A model of a low-bit-rate satellite communication system with polar coding was constructed, and the energy efficiency of polar coding was determined to be approximately 1,7 dB relative to convolutional coding. During the consideration of frame synchronization, formulas were derived for calculating energy losses and frame duration, applicable to various packet structures. A method for estimating the synchronization time for a specific frame structure was developed and results were obtained. The implementation of a clock and phase synchronization scheme in a system with OQPSK modulation is discussed compared to QPSK modulation. A Gardner clock synchronization scheme combined with a phase-locked loop is proposed. Using a signal-code design with higher energy efficiency reduces the power consumption of the modem equipment, which in turn contributes to a longer battery life for the portable communication station.

Arkhipov A.V., Fominykh A.M., Romanov D.A., Vorobev N.A., Luferchik P.V., Komarov A.A., Povetkin I.S. Design of a modulation and coding scheme for energy-efficient satellite communication stations. Achievements of modern radioelectronics. 2026. V. 80. № 2.
P. 117–127. DOI: https://doi.org/10.18127/j20700784-202602-13 [in Russian]

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