Examination of a method of increasing the spectral and energy efficiency of the
nonorthogonal multifrequency spectrally efficient frequency division multiplexing (SEFDM) …

The use of special digital image processing for removal of the blur which results quite often
from a mutual relative motion of the optical sensor and object during the exposure is …

In this paper the impact of nonlinear distortions caused by nonlinear power amplifier (PA) is
evaluated for BPSK and QPSK Spectrally Efficient Frequency Division Multiplexing (SEFDM) …

Optimal signals with smoothed envelopes and increased duration are considered.
Smoothed envelopes were obtained by optimization task with restriction on the energy of …

A problem of reducing frequency bandwidth in case of multi-frequency signals is considered.
The main conditions are the minimization of additional energy losses while maintaining the …

In this article we present the approach to increase data rate for multifrequency signals. It can
be done by location more frequency subcarriers in same occupied frequency bandwidth …

Presented an improved detection algorithm for random sequences of Spectrally Efficient
Frequency Division Multiplexing (SEFDM) signals based on decision diagram. Application of …

An algorithm for coherent element-by-element detection with decision feedback is proposed
for signals with non-orthogonal subcarrier frequency spacing. The simulation results in the …

Optimal signals with increased duration, providing overcoming “Nyquist Barrier”, are
considered. Optimization task of searching envelopes of signals is presented and …

In this article we present research on joint use of nonlinear amplifier and optimal signals with
increased duration. Optimal signals provide reducing of occupied frequency bandwidth and …