This article describes joint use of two improving spectral efficiency algorithms for multi-
frequency signals: SEFDM (Spectrally Efficient Frequency Division Multiplexing) technology …

This paper presents the study of 5G coding schemes application to Faster than Nyquist
transmission with optimal signals. Comparison of LDPC and Polar coding performance with …

The signals used in telecommunication systems have a high peak-to-average power ratio.
To increase the efficiency of power amplifiers of such signals, an envelope tracking method …

Numerous works are dedicated to Faster-than-Nyquist (FTN) signaling providing symbol rate
higher than “Nyquist limit” without energy losses. It is necessary to use infinite pulses or …

Telemedicine is a promising direction in the development of medical technologies for the
interaction of patients with doctors at a distance. In this paper, we consider the use of …

Authors research application of multi-frequency signals in modem based on soft-defined
radio NI USRP-2920. Main goal of this work is to compare receiving multi-frequency signals …

When amplifying signals with a high peak-to-average power ratio, the envelope tracking
method is widely used to increase the efficiency of power amplifiers. When designing a …

The modification of Tone Reservation method has been used to reduce peak-to-average
power ratio (PAPR) of multicarrier signals with non-orthogonal frequency spacing (Spectrally …

The paper addresses a comparison of computational complexity of time domain and
frequency domain equalizers for non-orthogonal multicarrier (SEFDM, Spectrally Efficient …

Simulation modeling of information transmission using spectrally efficient multi-frequency
signals with an amplifier and a limiter on transmission was held. The possibility of increasing …