Reliability of Microwave Digital Communication Links in the Presence of Atmospheric Noise of Local Origin

1974 ◽  
Author(s):  
P.J. Joglekar ◽  
P. Ramakrishna Rao
Keyword(s):  
Digital Communication ◽  
Atmospheric Noise ◽  
Local Origin ◽  
Communication Links

Development of Nonlinear Filtering Algorithms of Digital Half-Tone Images

2013 ◽  
pp. 278-304 ◽  
Author(s):  
E. P. Petrov ◽  
I. S. Trubin ◽  
E. V. Medvedeva ◽  
S. M. Smolskiy
Keyword(s):  
Discrete Time ◽  
Gaussian Noise ◽  
Nonlinear Filtering ◽  
Noise Immunity ◽  
Digital Communication ◽  
Additive White Gaussian Noise ◽  
Markovian Process ◽  
Radio Receiver ◽  
Filtering Algorithm ◽  
Communication Links

This chapter is devoted to solving the problem of algorithms and structures investigations for Radio Receiver Devices (RRD) with the aim of the nonlinear filtering of Digital Half-Tone Images (DHTI) representing the discrete-time and discrete-value random Markovian process with a number of states greater than two. At that, it is assumed that each value of the DHTI element is represented by the binary g-bit number, whose bits are transmitted via digital communication links in the presence of Additive White Gaussian Noise (AWGN). The authors present the qualitative analysis of the optimal DHTI filtering algorithm. The noise immunity of the optimal radio receiver device for the DHTI filtering with varying quantization and dimension levels is investigated.

scholarly journals Wireless to optical phase mapping in a seamless digital wireless-photonic link

2021 ◽  
Author(s):  
Niloy Ghosh ◽  
Sarang Pendharker
Keyword(s):  
Optimum Design ◽  
Communication Systems ◽  
Digital Communication ◽  
Linear Mapping ◽  
Design Guidelines ◽  
Optical Phase ◽  
Communication Links ◽  
Optical Domain ◽  
Digital Symbol ◽  
Wireless Band

This paper investigates the seamless mapping of wireless mmWave phase-levels to the optical phase-levels in a seamless digital mmWave-to-photonic converter. We report a non-linear mapping of phase-levels from the wireless to the optical domain which results in digital symbol degeneracy. Our work provides various optimum design guidelines to make such seamless converters practically feasible in digital communication links. The latency and the design complexity of such a seamless converter are expected to be appreciably lower than those of a conventional converter, thereby making it more suitable for 6G communication systems. Although the wireless operating frequency considered in this paper belongs to the mmWave band, all the contributions presented are equally applicable and relevant in the THz wireless band as well.

Atmosphere characterization for simulation of the two optimal wireless terahertz digital communication links

2013 ◽  
Vol 38 (17) ◽  
pp. 3437 ◽  
Author(s):  
Mahboubeh Mandehgar ◽  
Yihong Yang ◽  
D. Grischkowsky
Keyword(s):  
Digital Communication ◽  
Communication Links

scholarly journals Wireless to optical phase mapping in a seamless digital wireless-photonic link

2021 ◽  
Author(s):  
Niloy Ghosh ◽  
Sarang Pendharker
Keyword(s):  
Optimum Design ◽  
Communication Systems ◽  
Digital Communication ◽  
Linear Mapping ◽  
Design Guidelines ◽  
Optical Phase ◽  
Communication Links ◽  
Optical Domain ◽  
Digital Symbol ◽  
Wireless Band

This paper investigates the seamless mapping of wireless mmWave phase-levels to the optical phase-levels in a seamless digital mmWave-to-photonic converter. We report a non-linear mapping of phase-levels from the wireless to the optical domain which results in digital symbol degeneracy. Our work provides various optimum design guidelines to make such seamless converters practically feasible in digital communication links. The latency and the design complexity of such a seamless converter are expected to be appreciably lower than those of a conventional converter, thereby making it more suitable for 6G communication systems. Although the wireless operating frequency considered in this paper belongs to the mmWave band, all the contributions presented are equally applicable and relevant in the THz wireless band as well.

Theoretical sources of the Great White Brotherhood

1997 ◽  
pp. 20-32
Author(s):  
Valeriy Grynko
Keyword(s):  
Complex Processes ◽  
Local Origin ◽  
Favorable Conditions

Complex processes that accompany the formation and development of Ukrainian statehood have created favorable conditions for the spread of neo-religious churches, currents and trends. Most of them are mentally rooted, are spread predominantly owing to the activity of foreign missionaries. Therefore, given the local origin and social resonance, the Great White Brotherhood's phenomenon, whose propagation of faith was carried out and had some success in most of the post-Soviet countries, needs special attention.

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