Optical Wireless Channel Data Scheduling Using TLBO and Wavelength Division Multiplexing

2020 ◽  
Vol 12 (1) ◽  
pp. 43-56
Author(s):  
Anjana Shukla ◽  
Vineeta Saxena
Keyword(s):  
Teacher Learning ◽  
Wavelength Division Multiplexing ◽  
Wireless Channel ◽  
Multimedia Data ◽  
Optical Wireless ◽  
Wireless Data ◽  
Wavelength Division ◽  
Data Scheduling ◽  
Proposed Model ◽  
Evaluation Parameters

Channel utilization in today's environment for handling multimedia data plays an important role. The steps of allotting resources to process can be done by taking data which helps to analyze and make important decisions at runtime. This research paper focuses on allocation of optical wireless channels using wavelength division multiplexing where two models were developed, first was channel data pre-processing as per transmission packet size while second was TLBO (Teacher Learning Based Optimization) genetic algorithm which find the correct channel with position for the input data to communicate. Here some information used for analysis was total number of channels, data size, available wavelength, etc. So, output of the TLBO process sequence was used for passing data in selected channels. Results show that proposed model OWDS (optical wireless data scheduling) has overcome various evaluation parameters on different scales as compared to previous approaches adopted by researchers.

Adaptive Transmission of Multimedia Data over UMTS

2007 ◽  
pp. 20-24
Author(s):  
A. Alexiou
Keyword(s):  
High Speed ◽  
Limited Resource ◽  
Mobile User ◽  
Wireless Channel ◽  
Multimedia Data ◽  
The Internet ◽  
Wireless Data ◽  
Multimedia Services ◽  
Internet Applications ◽  
Universal Mobile Telecommunications System

As communications technology is being developed, users’ demand for multimedia services raises. Meanwhile, the Internet has enjoyed tremendous growth in recent years. Consequently, there is a great interest in using the IP-based networks to provide multimedia services. One of the most important areas in which the issues are being debated is the development of standards for the universal mobile telecommunications system (UMTS). UMTS constitutes the third generation of cellular wireless networks which aims to provide high-speed data access along with real-time voice calls. Wireless data is one of the major boosters of wireless communications and one of the main motivations of the next-generation standards. Bandwidth is a valuable and limited resource for UMTS and every wireless network in general. Therefore, it is of extreme importance to exploit this resource in the most efficient way. Consequently, when a user experiences a streaming video, there should be enough bandwidth available at any time for any other application that the mobile user might need. In addition, when two different applications run together, the network should guarantee that there is no possibility for any of the above-mentioned applications to prevail against the other by taking all the available channel bandwidth. Since Internet applications adopt mainly TCP as the transport protocol, while streaming applications mainly use RTP, the network should guarantee that RTP does not prevail against the TCP traffic. This means that there should be enough bandwidth available in the wireless channel for the Internet applications to run properly.

Flattened gain S + C + L Band RAMAN–Thulium-Doped Tellurite Fiber Amplifier Hybrid Optical Amplifier for Super Dense Wavelength Division Multiplexing System

2019 ◽  
Vol 40 (3) ◽  
pp. 167-170 ◽  
Author(s):  
Chakresh Kumar ◽  
Rakesh Goyal
Keyword(s):  
Wavelength Division Multiplexing ◽  
Noise Figure ◽  
Power Level ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Dense Wavelength Division Multiplexing ◽  
Wavelength Division ◽  
Proposed Model ◽  
L Band ◽  
Hybrid Optical Amplifier

Abstract In this paper we have examined the performances of 180×10 Gbps super dense wavelength division multiplexing (SD-WDM) system using the RAMAN–thulium-doped tellurite fiber amplifier (TDTFA) hybrid optical amplifier (HOA) with the channel spacing of 50 GHz in S+C+L band. Accepted rating flattened gain of 39.21 dB with the noise figure less than 5 dB is archived with the dual-pumping ( power level of 500 mW at 980 nm and at 1100 nm for RAMAN optical amplifier and similar, power level of TDTF amplifier is set to 500 mW and 350 mW at 1150 nm) technique. The effect of the proposed hybrid amplifier is evaluated in terms of gain and noise figure without using any coast effective technique. The outcome from the proposed model is also compared here with the existing optical amplifier.

Analysis of 64 channels based IS-OWC system using different intereference reduction techniques

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Suraj Mahajan ◽  
Preeti Gupta ◽  
Vijay Kumar
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
High Capacity ◽  
Optical Wireless ◽  
Differential Phase Shift ◽  
Wavelength Division ◽  
Reduction Techniques ◽  
Data Rates ◽  
Shift Keying ◽  
Great Consideration

AbstractOptical wireless communication in space is attracting great consideration due to high speed, high capacity, no EMI, high security, and wide bandwidth. OWC has edge over microwave communication because in laser based communication, relay feature saves the time of the system. In this paper, different interference reduction techniques in wavelength division multiplexing based inter-satellite optical wireless system are presented at different data rates 10, 20, and 40 Gbps. Hybrid multiplexing using wide division multiplexing and time division multiplexing is proposed first and second technique proposed is polarization interleaving in IsOWC systems. Dense channel spacing system with diverse modulations is investigated further such as Chirped, differential phase shift keying, and alternate mark inversion (AMI). Q factor is the performance evaluation parameters for different distances.

Gain/noise figure spectra of average power model Raman optical amplifiers in coarse wavelength multiplexed systems

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahmoud M. A. Eid ◽  
Said Mohammed Said ◽  
Ahmed Nabih Zaki Rashed
Keyword(s):  
Wavelength Division Multiplexing ◽  
Noise Figure ◽  
Optical Amplifiers ◽  
Average Power ◽  
Power Model ◽  
Wavelength Division ◽  
Received Power ◽  
Proposed Model ◽  
Transmitted Signal ◽  
Coarse Wavelength Division Multiplexing

Abstract This work clarifies the gain/noise figure spectra of average power model Raman optical amplifiers in coarse wavelength multiplexed systems. The proposed model have a total received power of 16.306 dBm, signal gain of 21.68 dB, and noise figure of 3.802 dB at the same operation parameters of the previous model which operated at length 0.2 km at the optical fiber coarse wavelength division multiplexing (CWDM) and transmitted signal power is 20 dBm. So the updates help us to greatly improve the system.

An Improved Hybrid WDM/TDM PON Model with Enhanced Performance Using Different Modulation Formats of WDM Transmitter

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Anil Kumar ◽  
Rajneesh Randhawa
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Passive Optical Network ◽  
Modulation Formats ◽  
Eye Diagram ◽  
Fiber Networks ◽  
Wavelength Division ◽  
Optical Fiber Networks ◽  
Proposed Model ◽  
Time Division

AbstractIn this paper, we have proposed an improved hybrid passive optical network model using wavelength division multiplexing (WDM) and time division multiplexing (TDM) with 96 users in the bidirectional optical fiber networks. The performance is evaluated based on different distances and modulation formats with the help of Q factor, BER and Eye diagram. In the proposed model, the data is successfully transmitted up-to a distance of 96 km with a data rate of 10 Gbits/sec. Comparative analysis of proposed models with respect to other four models are hence put forth.

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