Effect of Misalignment Error on Secrecy Outage Capacity of FSO Communication Links

2019 ◽  
Author(s):  
Ruben Boluda-Ruiz ◽  
Khalid Qaraqe
Keyword(s):  
Outage Capacity ◽  
Communication Links ◽  
Secrecy Outage ◽  
Misalignment Error

scholarly journals Secrecy Outage Capacity of Fading Channels

2013 ◽  
Vol 59 (9) ◽  
pp. 5379-5397 ◽  
Author(s):  
Onur Gungor ◽  
Jian Tan ◽  
Can Emre Koksal ◽  
Hesham El-Gamal ◽  
Ness B. Shroff
Keyword(s):  
Fading Channels ◽  
Outage Capacity ◽  
Secrecy Outage

scholarly journals Secrecy outage capacity of fading channels

2012 ◽  
Author(s):  
Onur Gungor ◽  
Jian Tan ◽  
Can Emre Koksal ◽  
Hesham El-Gamal ◽  
Ness B. Shroff
Keyword(s):  
Fading Channels ◽  
Outage Capacity ◽  
Secrecy Outage

ESTIMATION OF RAIN FADE DURATIONS ON COMMUNICATION LINKS AT Ka BAND IN EQUATORIAL AND TROPICAL REGIONS

2020 ◽  
Vol 79 (2) ◽  
pp. 129-141
Author(s):  
M. E. Sanyaolu ◽  
Oluropo F. Dairo ◽  
A. A. Willoughby ◽  
L. B. Kolawole
Keyword(s):  
Ka Band ◽  
Tropical Regions ◽  
Communication Links

Optical data signals in fiber optic communication links with fading

2019 ◽  
pp. 94-104
Author(s):  
I. Juwiler ◽  
I. Bronfman ◽  
N. Blaunstein
Keyword(s):  
Spectral Efficiency ◽  
Fiber Optic ◽  
Fiber Optic Cable ◽  
Optical Signals ◽  
Dispersion Properties ◽  
Optical Cable ◽  
Time Dispersion ◽  
Communication Links ◽  
Fiber Optic Communication ◽  
Optic Communication

Introduction: This article is based on the recent research work in the field of two subjects: signal data parameters in fiber optic communication links, and dispersive properties of optical signals caused by non-homogeneous material phenomena and multimode propagation of optical signals in such kinds of wired links.Purpose: Studying multimode dispersion by analyzing the propagation of guiding optical waves along a fiber optic cable with various refractive index profiles of the inner optical cable (core) relative to the outer cladding, as well as dispersion properties of a fiber optic cable due to inhomogeneous nature of the cladding along the cable, for two types of signal code sequences transmitted via the cable: return-to-zero and non-return-to-zero ones.Methods: Dispersion properties of multimode propagation inside a fiber optic cable are analyzed with an advanced 3D model of optical wave propagation in a given guiding structure. The effects of multimodal dispersion and material dispersion causing the optical signal delay spread along the cable were investigated analytically and numerically.Results: Time dispersion properties were obtained and graphically illustrated for two kinds of fiber optic structures with different refractive index profiles. The dispersion was caused by multimode (e.g. multi-ray) propagation and by the inhomogeneous nature of the material along the cable. Their effect on the capacity and spectral efficiency of a data signal stream passing through such a guiding optical structure is illustrated for arbitrary refractive indices of the inner (core) and outer (cladding) elements of the optical cable. A new methodology is introduced for finding and evaluating the effects of time dispersion of optical signals propagating in fiber optic structures of various kinds. An algorithm is proposed for estimating the spectral efficiency loss measured in bits per second per Hertz per each kilometer along the cable, for arbitrary presentation of the code signals in the data stream, non-return-to zero or return-to-zero ones. All practical tests are illustrated by MATLAB utility.

A DUAL MODULATION PULSE POSITION MODULATION APPROACH IN 130NM CMOS TECHNOLOGY FOR TIME BASED SERIAL COMMUNICATION LINKS

2020 ◽  
Vol 38 (2) ◽  
pp. 97-106
Author(s):  
Mostafa Salah Rashdan ◽  
Nesma M. Sobhy ◽  
Ahmed El-Sawy
Keyword(s):  
Serial Communication ◽  
Cmos Technology ◽  
Pulse Position Modulation ◽  
Communication Links
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