scholarly journals Radio Contact Establishment Out of Iraqi Boarder using Nicosia Ionosonde Real data

2018 ◽  
Vol 14 (2) ◽  
pp. 103-107
Author(s):  
Ahmed Hassan
Keyword(s):  
Communication Systems ◽  
Real Data ◽  
Optical Fiber Communication ◽  
Experimental Results ◽  
Radio Station ◽  
Advanced Technology ◽  
Radio Communication ◽  
Fiber Communication ◽  
Radio Contact ◽  
Communication Path

Although the advanced technology in satellites and optical fiber communication systems exists now a day, but the researches in HF sky wave propagation for Mesopotamia (Iraq) area is suffered from shortage. In this paper, the novelty is that the communication path from Baghdad to any distance out of Iraqi border had been predicted, calculated and measured experimentally by using real data (Ionogram) supplemented by Nicosia Ionosound station 1000Km from Baghdad and a radio station model TS-130SE as a transmitter. The Predicted results generated by using MATLAB and NTIA/ITS software package like VOACAP. Radio communication using TS-130SE with 36 countries had been done experimentally. A comparison between the theoretical and experimental results was done. The experimental results were in the range of the predicated results which emphasis proposed method Presented in this paper.

Novel Manchester-Based Multilevel Signaling for High-Speed Optical Communication Systems

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Festus Idowu Oluwajobi ◽  
Nguyen Dong-Nhat ◽  
Amin Malekmohammadi
Keyword(s):  
Communication Systems ◽  
High Speed ◽  
Chromatic Dispersion ◽  
Optical Fiber Communication ◽  
Pulse Amplitude ◽  
Calculation Model ◽  
Fiber Communication ◽  
Receiver Sensitivity ◽  
Communication Links ◽  
Dispersion Tolerance

AbstractIn this paper, the performance of a novel multilevel signaling based on Manchester code namely four-level Manchester Coding (4-MC) technique is investigated for next generation high-speed optical fiber communication links. The performance of 4-MC is studied and compared with conventional Manchester modulation and four-level pulse amplitude modulation (4-PAM) formats in terms of receiver sensitivity, spectral efficiency and dispersion tolerance at the bit rate of 40 Gb/s. The bit error rate (BER) calculation model for the proposed multilevel scheme has also been developed. The calculated receiver sensitivity and the chromatic dispersion tolerance at the BER of 10–9 of the proposed scheme are −22 dBm and 67.5 ps/nm, respectively. It is observed that, 4-MC scheme is superior in comparison to 4-PAM by 3.5 dB in terms of receiver sensitivity in back-to-back scenario. Therefore, the proposed scheme can be considered as an alternative to current 4-PAM system.

Long-haul coherent optical fiber communication systems using optical amplifiers

1991 ◽  
Vol 9 (2) ◽  
pp. 251-260 ◽  
Author(s):  
S. Ryu ◽  
S. Yamamoto ◽  
H. Taga ◽  
N. Edagawa ◽  
Y. Yoshida ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Communication Systems ◽  
Optical Amplifiers ◽  
Optical Fiber Communication ◽  
Fiber Communication

Analysis of Compensation for Inter-Mode Nonlinear Phase Modulation in Few-Mode Optical Fiber Communication Systems

2019 ◽  
Vol 39 (12) ◽  
pp. 1206006
Author(s):  
王瑜浩 Wang Yuhao ◽  
武保剑 Wu Baojian ◽  
万峰 Wan Feng ◽  
文峰 Wen Feng
Keyword(s):  
Optical Fiber ◽  
Phase Modulation ◽  
Communication Systems ◽  
Optical Fiber Communication ◽  
Fiber Communication ◽  
Nonlinear Phase
Sign in / Sign up

Export Citation Format

Share Document