TECHNOLOGY OF MODULATION BY SYNTHESIZED DIGITAL METHOD OF CARRIER IN ANALOGUE SIGNAL TRANSMISSION SYSTEMS

2018 ◽  
Author(s):  
A. N. Salauyou ◽  
M. U. Ehunou
Keyword(s):  
Signal Transmission ◽  
Digital Method ◽  
Transmission Systems ◽  
Analogue Signal

scholarly journals Possibilities for Advanced Encoding Techniques at Signal Transmission in the Optical Transmission Medium

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Filip Čertík ◽  
Rastislav Róka
Keyword(s):  
Optical Fiber ◽  
Simulation Model ◽  
Optical Transmission ◽  
Signal Transmission ◽  
Optical Signal ◽  
Negative Effects ◽  
Transmission Systems ◽  
High Data ◽  
Modulation Techniques ◽  
Optical Transmission Systems

This paper presents a possible simulation of negative effects in the optical transmission medium and an analysis for the utilization of different signal processing techniques at the optical signal transmission. An attention is focused on the high data rate signal transmission in the optical fiber influenced by linear and nonlinear environmental effects presented by the prepared simulation model. The analysis includes possible utilization of OOK, BPSK, DBPSK, BFSK, QPSK, DQPSK, 8PSK, and 16QAM modulation techniques together with RS, BCH, and LDPC encoding techniques for the signal transmission in the optical fiber. Moreover, the prepared simulation model is compared with real optical transmission systems. In the final part, a comparison of the selected modulation techniques with different encoding techniques and their implementation in real transmission systems is shown.

scholarly journals DIGITAL ANTENNA ARRAYS SIMULATION

2021 ◽  
Vol 6 (3(36)) ◽  
pp. 13-17
Author(s):  
Yuriy Borisovich Nechaev ◽  
Ilya Vladimirovich Peshkov ◽  
Natalia Alexandrovna Fortunova ◽  
Irina Nikolaevna Zaitseva
Keyword(s):  
Simulation Model ◽  
Antenna Array ◽  
Antenna Arrays ◽  
Signal Transmission ◽  
Transmission Systems ◽  
Digital Radio ◽  
Initial Information ◽  
Information Signal ◽  
Broadband Signal ◽  
Radio Systems

The article describes a simulation model of a digital antenna array, which can be used in broadband signal transmission systems under the influence of broadband interference. The initial information signal has a speed of 19200 bit / s for the I and Q stream. It is proved that the signal level after applying the diagramming of a digital antenna array is four times higher than the signal level without its use, which confirms the advantage of digital radio systems.

Errata: Stability of Linear Signal Transmission Systems

SIAM Review ◽  
1963 ◽  
Vol 5 (3) ◽  
pp. 273-273
Author(s):  
T. F. Bridgland, Jr.
Keyword(s):  
Signal Transmission ◽  
Transmission Systems ◽  
Linear Signal
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