Joint influence of heterogeneous stochastic factors on bit-error rate of ground-to-ground free-space laser communication systems

2007 ◽  
Vol 270 (2) ◽  
pp. 121-127 ◽  
Author(s):  
E. Ferdinandov ◽  
B. Pachedjieva ◽  
B. Bonev ◽  
Sl. Saparev
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Free Space ◽  
Communication Systems ◽  
Laser Communication ◽  
Joint Influence

Effects of fog on the bit-error rate of a free-space laser communication system

1999 ◽  
Vol 38 (3) ◽  
pp. 424 ◽  
Author(s):  
Brian R. Strickland ◽  
Michael J. Lavan ◽  
Eric Woodbridge ◽  
Victor Chan
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Communication System ◽  
Free Space ◽  
Laser Communication

scholarly journals Performance Analysis of a Free Space Optics Link with Multiple Transmitters/Receivers

2012 ◽  
Vol 13 (1) ◽  
Author(s):  
Nur Haedzerin Md Noor ◽  
Ahmed Wathik Naji ◽  
Wajdi Al-Khateeb
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Free Space ◽  
Communication Systems ◽  
Theoretical Calculations ◽  
Power Level ◽  
Free Space Optics ◽  
Eye Diagram ◽  
Space Optics ◽  
Received Power

ABSTRACT:  Multiple transmitters/receivers (TX/RX) are used to improve the quality of Free Space Optics (FSO) communication systems. With the current needs of this technology for longer distance communication, the qualitative analysis of the system has become essential. In this work, the received power level (PR) and bit error rate (BER) are considered to influence the FSO link performance. The relationship between the two parameters are investigated and analysed. Furthermore, the received power for various numbers of TXs and RXs are experimentally measured and compared with the values obtained from theoretical calculations. The first part of the work deals with the theoretical calculation and simulation designs of multiple laser beams based on the commercial FSO used in actual sites. The second part describes the practical work and analysis of the system’s performance.ABSTRAK: Pemancar/penerima berganda (TX/RX) digunakan bagi meningkatkan kualiti sistem komunikasi Ruang Optik Bebas (FSO). Analisis kualitatif ke atas sistemnya adalah penting bagi keperluan semasa teknologi ini untuk jarak jauh. Di dalam kajian ini, aras kuasa penerima (PR) dan kadar ralat bit (BER) telah diambilkira bagi menentukan prestasi rangkaian FSO. Hubungan di antara kedua-dua parameter telah dikaji dan dianalisis. Seterusnya, kuasa penerima untuk pelbagai nombor TXs dan RXs diukur secara eksperimen dan dibandingkan dengan nilai teori yang dikira. Bahagian pertama skop kajian berkaitan dengan pengiraan teori dan rekabentuk simulasi sinaran laser berdasarkan FSO komersial di lapangan. Bahagian kedua kajian adalah kerja lapangan dan analisis prestasi sistem.KEY WORDS:  Free Space Optics (FSO) link; Multiple TX/RX FSO; bit error rate (BER); eye diagram.

scholarly journals Blind Detection for Serial Relays in Free Space Optical Communication Systems

2018 ◽  
Vol 8 (11) ◽  
pp. 2074 ◽  
Author(s):  
Mohamed Elbawab ◽  
Mohamed Abaza ◽  
Moustafa H. Aly
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Free Space ◽  
Communication Systems ◽  
Signal To Noise Ratio ◽  
Blind Detection ◽  
Free Space Optical ◽  
Observation Window ◽  
Space Optical Communication ◽  
Average Bit Error Rate

Free-space optical (FSO) communication systems have attracted considerable research interest owing to its high transmission rates and its efficient solution for the last mile problem. Atmospheric turbulence degrades the performance of FSO systems. To estimate the received signal, Channel State Information (CSI) or blind detection is used. The blind detection estimates the received signal without the need for pilot signals which reduce the throughput and increase the complexity of the signal. In this paper, we have proposed a relay technique which utilizes the blind detection method for FSO communications. This proposed technique would improve the performance of the FSO system compared to the direct link method. It is observed that the proposed method achieves a signal-to-noise ratio (SNR) close to the SNR reported by CSI method maintaining the same average bit error rate, provided that only a small observation window is employed. Moreover, Monte Carlo simulation results are further provided to demonstrate the validity of the derived approximated average bit error rate.

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