Spectrally efficient frequency division multiplexing (SEFDM) is a multi-carrier signal
waveform, which achieves higher spectral efficiency, relative to conventional orthogonal …

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

In this paper the research on realization of transmitter for optimal signals which provide high
spectral efficiency without significant energy losses is done. HackRF One is chosen as a …

Many modern telecommunication systems use OFDM signals, because of their high
performance in fading channels. Meanwhile, spectrum shortage is one of the most urgent …

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

This work provides comparison of polar codes and turbo codes applicated to optimal Faster-
than-Nyquist signals. The efficiency of the joint use of these coding techniques and optimal …

This thesis addresses theoretical and practical challenges of spectrally efficient frequency
division multiplexing (SEFDM) systems in both wireless and optical domains. SEFDM …

Application of optimal signals allows to solve the problem of improving spectral efficiency
with minimal energy losses. However, the major disadvantage of such signals is high peak …

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

Рассмотрены постановка и решение оптимизационных задач синтеза импульса для
многокомпонентных спектрально-эффективных сигналов с учетом заданной …