Performance analysis of a 2D double hard-limited OCDMA system over FSO link under strong turbulence for defense applications

Carneiro, Vítor Gouvêa Andrezo; Rodrigues, Gilberto Kirk; Giraldi, Maria Thereza Miranda Rocco

doi:10.1109/milcom.2012.6415644

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…The fibers are not emitted the transmitted signals without tampering while the copper cable dose, this fiber property preventing the drawing of transmitted signal. The non-linear behavior of optical fiber is its major weakness [11][12][13][14][15][16][17][18][19][20]. This nonlinearity is a directly proportional with the power of the signal been transmitted through the fiber optic.…”

Section: Introductionmentioning

confidence: 99%

Transmitting audio via fiber optics under nonlinear effects and optimized tuning parameters based on Co-simulation of matlab and optisystemTM

Al-hayder¹,

Abd²,

Alkhafaji³

2020

IJECE

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Limitations of conventional wires such as copper wires are causing dispersion and distortion of the message signal for long distances communication especially for the wide bandwidths. The ability of fiber optic to overcome this problem is making it a dominant transmission medium. Despite of this major positive attribute of optic fibers, there is still a downside for using the fiber optic communication; that is the nonlinearity problem especially at the very high frequency bandwidth. For the first time, a desigen of an audio signal is suggested and executed in MatLab with an integration with OptiSystemTM software to discuss and solve this issu. The audio signal is then transmitted in different shapes of modulation signals (NRZ, RZ & RC) for different distances (100 km & 75 km) via a fiber optic media to be received in a receiving part of the simulated system. Three tests are used to do so. The first is the Quality-factor (Q-Factor) against the received power, second test is eye diagram performance and finally is the measuring of the amplitude of output (received) signal for each modulation signal shape using the Oscilloscope Visualizer. The NZR modulation signal was found to be the best one of the three used signals’ types in all three tests. The Q-factor for NRZ pulse shape (=12) was higher than that for RZ (=10) and RC (=8) for a 100 km distance at the same received power level.

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Section: Introductionmentioning

confidence: 99%

Transmitting audio via fiber optics under nonlinear effects and optimized tuning parameters based on Co-simulation of matlab and optisystemTM

Al-hayder¹,

Abd²,

Alkhafaji³

2020

IJECE

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“…TheFSO optical systems are starting to be nowadays accepted in the private or military marketplace as a normal solution to replace an expensive fiber optic to be based solutions. To reduce the cost-effective between the fiber optic infrastructure and end users, the communication technology of FSO was produced by [3]. Moreover, FSO links are a modern emerging optical technology which has been found their applications in long-haul and short links for communications same as "Wireless Local Area Network (WLAN)", and "Local Area Network (LAN)".…”

Section: Introductionmentioning

confidence: 99%

Establishment Network by Using FSO Link Based on MD Code for Hybrid SCM-SAC-OCDMA Wireless System

Fayadh

Wali

Bonneya

2018

IJECE

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<p>Since the wireless systems are working under nature environments and influenced by turbulence, weather in Iraq that leads to extended amount of fading signal, dissipation or attenuation. Basic “hybrid Subcarrier Multiplying Spectral Amplitude Coding (SCM-SAC) of Optical Code Division Multiple Access (OCDMA)" indoor or outdoor optical system depends on generally “Multi-Diagonal (MD)" security code by using optical space known as “Free Space Optic (FSO)" that was proposed in this work. It is found that the mention hybrid wireless systems can be used in operating mesh networks. The main proposed idea of hybrid optical technique was analyzed and simulated by normally taking into simulation account that the directly effecting by rain and haze attenuations. In addition, there are mention and description for atmospheric effects, FSO mesh network, modulation scheme, simulation, and the data security. From simulation results, the hybrid system using MD code produces reduced “bit-error rate (BER)" at heavy storm rain to distance or range of 500 m and at drizzle rain up to 2500 m range. And also investigates the performance of using the proposed system with radio over fiber (RoF) for UWB signals through indoor propagation in building applications of wireless channel.</p>

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Long Range Cost-Effective WDM-FSO System Using Hybrid Optical Amplifiers

Dayal

Singh

Kaur

2017

Wireless Pers Commun

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Performance analysis of a 2D double hard-limited OCDMA system over FSO link under strong turbulence for defense applications

Cited by 7 publications

References 19 publications

Transmitting audio via fiber optics under nonlinear effects and optimized tuning parameters based on Co-simulation of matlab and optisystemTM

Transmitting audio via fiber optics under nonlinear effects and optimized tuning parameters based on Co-simulation of matlab and optisystemTM

Establishment Network by Using FSO Link Based on MD Code for Hybrid SCM-SAC-OCDMA Wireless System

Long Range Cost-Effective WDM-FSO System Using Hybrid Optical Amplifiers

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