coherent optical communication systems
Challenges to coherent optical communication systems and their mitigation techniques –A Review
... Abstract: Optical communication systems often arise as the most efficient solution to transmit at high data rates and also over long ...in optical communication are focusing on ...
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Digital adaptive carrier phase estimation in multi level phase shift keying coherent optical communication systems
... over optical fibers, to constitute the great part of the national and international communication infrastructures ...speed optical fiber communication systems can be significantly ...
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Analytical investigations on carrier phase recovery in dispersion unmanaged n PSK coherent optical communication systems
... Based on Equation (9), the performance of the one-tap normalized LMS carrier phase recovery in the coherent optical fiber communication systems using different modulation formats is shown in ...
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Analytical Investigations on Carrier Phase Recovery in Dispersion-Unmanaged n-PSK Coherent Optical Communication Systems
... n-PSK coherent optical transmission systems using the one-tap normalized LMS, the block-wise average, and the Viterbi-Viterbi algorithms are investigated based on the above theoretical studies, which ...
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Phase noise influence in coherent optical DnPSK systems with DSP based dispersion compensation
... around coherent optical communication systems based on semiconductor lasers as transmitter (Tx) and local oscillator (LO) was initiated around 1980 with lab tests using two level modulation: ...
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Advanced DSP for coherent optical fiber communication
... Optical communication networks and systems have started to use artificial intelligence (AI) technologies to improve the performance, from equipment to control and ...point-to-point optical ...
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Duobinary Modulation Format in Optical Communication Systems
... duobinary coherent receiver that detect signal amplitude and phase. Optical transmission path block represents optical transmission path with parameters: the fiber length – 80 km, the optical ...
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Analysis of outage probability in coherent OFDM and Fast OFDM systems in terrestrial and underwater wireless optical communication links
... acoustic communication systems are relatively low data rates, we need to develop an optical communication system that is capable of supporting underwater wireless communication in a ...
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Bit Error Rate Performance in Coherent Optical Systems
... the optical channel conditions. Data communication systems must maintain very low bit error rates, typically between10 -12 and 10 -15 , since the consequences of a single bit error can be very ...
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Design Coding Format For Optical Fiber Communications
... an optical transmitter. In modern laser communication systems There are two type of optical light sources, such as Light emitting diode (LED) that give incoherent communication ...give ...
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Comparative Analysis of Different Modulation Techniques in Coherent Optical Communication System
... uses coherent detection and it needs a local laser and an optical phase-locked loop in the ...complete coherent detection in QAM or DPSK system, which makes the structure of the system ...
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Asymptotic analysis of V BLAST MIMO for coherent optical wireless communications in Gamma Gamma turbulence
... Abstract: This paper investigates the asymptotic BER performance of coherent optical wireless communication systems in Gamma-Gamma turbulence when applying the V-BLAST MIMO scheme. A new ...
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Multi-level Mapping for Long Haul Coherent Optical OFDM Systems
... The accuracy and efficiency of this method depend on the distribution of step sizes along fiber and on both time and frequency domain resolutions. Finding an optimal step is not easy and depends on particular ...
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DSP BASED COHERENT OPTICAL COMMUNICATION SYSTEM
... The rapidly increasing data traffic nowadays has aroused urgent demand for higher spectrum efficiency and higher capacity in optical communication systems. To further improve the system capacity, ...
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A review of communication oriented optical wireless systems
... the optical beams are blocked by objects inside the ...narrow optical beam from the transmitter to the mobile ...personal communication systems (Figure ...
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EEPN and CD study for coherent optical nPSK and nQAM systems with RF pilot based phase noise compensation
... QAM systems. The systems performance is influenced by the use of an RF pilot carrier to accomplish phase noise compensation through complex multiplication in combination with discrete filters to compensate ...
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Saturation in cascaded optical amplifier free space optical communication systems
... because communication over shorter distances naturally results in lower turbulence-free fixed path loss ...the optical signal is able to travel for longer distances at lower BER values along an OA cascade ...
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Optical wireless MIMO communication
... parallel optical wireless communication ...light systems can have better performances than the visible light systems, at the cost of more complicated designs and more ...
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A Blind Nonlinearity Compensator Using DBSCAN Clustering for Coherent Optical Transmission Systems
... Fig. 2 depicts the schematic diagram of the experimental setup of the 10 GBaud (40 Gb/s) 16-QAM coherent signal. In the transmitter-DSP, look-up-table-based pre-distortion was used to mitigate the opto-electronic ...
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Receiver implemented RF pilot tone phase noise mitigation in coherent optical nPSK and nQAM systems
... Abstract: In this paper, a novel method for extracting an RF pilot carrier signal in the coherent receiver is presented. The RF carrier is used to mitigate the phase noise influence in n-level PSK and QAM ...
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