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106 articles for “bit rate”
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Comparative Analysis of Power Penalty versus Crosstalk in Optical Active Network Components like Erbium Doped Fiber Amplifier, Raman Amplifier and Semiconductor Optical Amplifier
Abstract: AbstractOptical amplifiers boost the power of optical system without optoelectronics (O-E-O) conversion. The optical amplification process is accompanied by Amplified Spontaneous Emission (ASE) noise that accumulates along the transmission line and degrades the optical signal to noise ratio (OSNR). Intensity modulation in one channel causes crosstalk in the other channel via the change of the complex refractive index in the amplifier. In this paper, authors tried to calculate and compare …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 1–10 Read article
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Effect of Crosstalk of a Proposed Optical Cross-Connect Topology in OXC Switched WDM Networks
Abstract: ABSTRACTThis paper presents an optical wavelength division multiplexed cross-connect topology, which is modified form of the existing optical cross-connect (OXC) topologies. An analytical approach is developed for the proposed topology to explore the effect of crosstalk induced in multichannel WDM networks due to OXC. Factors that affect the magnitude of crosstalk in the OXC are investigated and different parameters are optimized to reduce the total OXC-induced crosstalk. The crosstalk performance …
Published in Trends in Opto-electro & Optical Communication · Vol. 1, Issue 1-3, 2011 · pp. 8–15 Read article
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Performance Optimizing of a Simulated Model of a Fabry-Perot based Tunable Laser Operating at 1550 nm
Abstract: AbstractThe paper presents data for an optimized Fabry-Perot tunable laser, with a wavelength tuning range of 56.3 nm, with a high output power of 17.4307 dBm. Incentive for this research has been due to the cause that Fabry–Perot semiconductor laser diodes have been fine contenders as transmitters to be used in WDM optical networks. The proposed system is capable of modulating a maximum bit rate of 26.58 Gb/s, with an …
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 3, 2014 · pp. 23–31 Read article
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Designing and Implementation of Under-Water Optical Wireless Communication System
Abstract: In modern digital communication field Optical Wireless Communication is playing key role to heighten expectation of the end user. To communicate these end users through communication channel with reliable data is always challenging and unpredictable. Now a day most thrust area is wireless optical communication which is used to establish connection among various end user nodes. All the constituents like fog, dust, smoke, and rain and wind turbulence will have …
Published in Recent Trends in Fluid Mechanics · Vol. 11, Issue 2, 2024 · pp. 10–14 Read article
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Performance Analysis of IEEE 802.22 Wireless Regional Area Network with Different Modulation Schemes and Code Rates: A Review
Abstract: Abstract: The wireless regional area network (WRAN) is an IEEE 802.22 standard. It operates in the very high frequency and ultra-high frequency range. It works on the principle of cognitive radio. The basic objective of WRAN is to sense the available frequency spectrum and assign this sensed frequency to the secondary user. The performance of the network strongly depends on the wireless environment and different channel conditions. In this paper, …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 6, Issue 3, 2019 · pp. 12–17 Read article
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Analytical Performance Evaluation of Coherent Detection Optical Receiver over Direct Detection in OFDM Wireless Optical Communication System under Turbulent Condition
Abstract: AbstractWireless Optical (WO) communication networks have the ability to have high-speed and robust access. WO communication network output can be greatly affected by ambient conditions. Atmospheric turbulence is among the facts about the atmosphere which can reduce the reliability underneath clear sky. Earlier, orthogonal frequency division multiplexing (OFDM) in WO is reported for the design of a high-performance communication channel for the atmospheric network. Selecting a proper detection scheme in …
Published in Trends in Opto-electro & Optical Communication · Vol. 10, Issue 1, 2020 · pp. 14–23 Read article
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Performance Analysis of Carrier Frequency Offset (CFO) and Phase Noise in 4G Communication System
Abstract: For telecommunication services the dramatic shift in the market has been made in beginning of 21st century. In these days' communication network the key challenges is to integrate numerous serves, convey the additional data as expeditiously as doable through limited bandwidth and providing high information data rates. For 4G communication systems 3GPP introduced two features Higher Order Modulation and Multiple Input Multiple Output (MIMO) in OFDM system but one limiting …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 1, 2016 · pp. 33–46 Read article
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Performance Analysis of OFDM System Using Non-conventional Transform and Non-conventional Mapping Schemes over Rayleigh Channel
Abstract: ABSTRACT High data rate wireless transmission is required to meet the rapidly increasing demands for mobile communications. Fast Fourier transform (FFT)-OFDM has drawn much attention due to its simple implementation and robustness against frequency-selective fading channels. Recently, the advantages of the discrete cosine transform (DCT)-based OFDM have come to the light. In this paper, performance of the conventional FFT-OFDM system is compared with non-conventional DCT-OFDM in terms of bit error …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 1, 2012 · pp. 13–20 Read article
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Optimal Simultaneous Power and Rate Adaption of Communication System over Inverse Gamma Shadowed Channels
Abstract: Adaptive capacity analysis to model various emerging wireless fields like vehicle to vehicle communication, cellular and off-body communication based on inverse gamma shadowed fading mathematical model is derived. The derived algebraic model for optimal simultaneous power and rate adaption (OPRA) is mathematically tractable in terms of numerical and analytical handling. A novel closed form model for OPRA is derived in terms of Digamma and Meijer’ s-G functions. This derived exact …
Published in Journal of Operating Systems Development & Trends · Vol. 6, Issue 1, 2019 · pp. 23–26 Read article
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Analysis of M-MRC Receiver over Nakagami-m Fading Channels using Wireless Information and Power Transfer System
Abstract: AbstractThe expression for the performance of Outage probability and Average bit-error rate (ABER), have been presented in this paper, considering an arbitrary branch Maximal Ratio Combining (MRC) Receiver, over Nakagami-m Fading Channels using simultaneous wireless information and power transfer (SWIPT). For the SWIPT system, a Power splitter (PS) at the receiver side has been employed, which splits the received signal into the information transmitter and the energy harvesting parts. A …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 1, 2019 · pp. 49–54 Read article
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Performance Improvement in Massive MIMO System with Channel Coding
Abstract: In this paper, we concentrate on performance for Massive Multiple Input Multiple Output (MIMO) with channel coding and without channel coding wherein the performance of Bit Error Rate (BER) of both is compared. In the test setup, the Base station is incorporated with 32 antennas along with 32 User terminals with single antenna providing a reliable communication. The coded Massive MIMO system for Channel coding adopted Low Density Parity Check …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 8, Issue 1, 2020 · pp. 19–24 Read article
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Background Service QoS in Integrated UMTS-HSDPA and WLAN Ad Hoc Networks with Various Inter-Domain Routing Protocols
Abstract: AbstractThe Next Generation Network (NGN) allows the service providers to extend the coverage and capacity of existing network towards rural and hot spots area with large variety of services. Integrated UMTS-HSDPA and WLAN Ad Hoc Networks is most eligible NGN’s under this category. The integrated network offers a large variety of services e.g. conversational, streaming, interactive, and background class. This paper focuses on asymmetric best-effort service belonging to the background …
Published in Journal of Computer Technology & Applications · Vol. 6, Issue 3, 2015 · pp. 31–59 Read article
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Design and development of an IP core for speech detection in varying noise environments
Abstract: Speech detection is a process of separating speech and silence regions from noisy speech. It is an important part in speech processing. One of the important and difficult tasks in speech detection is the detection of speech in a very low signal to noise ratio. The application of speech detector includes speech coding, where the accurate speech coding can reduce bit number low down the bit rates, and in speech …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 7, Issue 1, 2020 · pp. 19–27 Read article
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QoS Analysis of the Integrated UMTS and WLAN Network in Different Mobility Models with Prediction Algorithms Assisted Vertical Handoff using Conversational Traffic
Abstract: The selection of suitable handoff prediction algorithms in next generation heterogeneous networks is based on seamless mobility. The effect of different mobility models on quality of service (QoS) of the integrated universal mobile telecommunications system (UMTS) and wireless local area network (WLAN) can be observed by handoff prediction algorithms. The aim of this work is to analyze QoS of the integrated UMTS and WLAN network in the file-based mobility model …
Published in Journal of Web Engineering & Technology · Vol. 3, Issue 1, 2016 · pp. 7–19 Read article
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A Comprehensive Review on Comparative Study of Different Techniques of Dispersion Compensation
Abstract: AbstractOptical fiber communication (OFC) provides high bit rate data communication. There are various types of impairments and signal degradation mechanisms which are involved with this highspeed communication system. In case of long distance communication, the most prominent impairment is dispersion. Dispersion affects the information signal very badly when it travels along a long distance. There are different techniques available to compensate dispersion. In this paper, the various methods of dispersion …
Published in Recent Trends in Parallel Computing · Vol. 4, Issue 3, 2017 · pp. 1–8 Read article
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Design and Performance Comparison of Secure Routing Protocol in Integrated UMTS and WLAN Ad Hoc Networks
Abstract: The impact of routing attack on the Integrated Universal Mobile Telecommunications System (UMTS) and Wireless Local Area Network (WLAN) ad hoc network can be minimized by choosing a suitable secure routing protocol. This paper introduces a new secure inter-domain routing protocol SNAuth_SPERIPv2 and its performance comparison with other secure routing protocols for Constant Bit-Rate (CBR) voice conversational traffic. Keywords: Integrated UMTS and WLAN Ad Hoc network, Scalability, QoS, Routing, Security, …
Published in Journal Of Network security · Vol. 4, Issue 3, 2016 · pp. 28–41 Read article
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Performance Analysis of Mobility over the Integrated UMTS and WLAN Network in different Mobility Models with Vertical Handoff Prediction Algorithms using Streaming Service
Abstract: The seamless mobility is the final goal of any heterogeneous network. It can be achieved by selecting a suitable vertical handoff prediction algorithm, which can perform well in different mobility models. This paper presents comparative performance of mobility over the integrated universal mobile telecommunications system (UMTS) and wireless local area network (WLAN) in different mobility models (the file-based mobility model and the random waypoint mobility model) with vertical handoff prediction …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 1, 2016 · pp. 35–47 Read article
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Comparative Performance Analysis of Inter-Domain Routing in Integrated UMTS and WLAN Ad Hoc Networks with CBR Conversational Traffic Class on Various Routing Protocols
Abstract: Integration of Universal Mobile Telecommunication System (UMTS) and Wireless Local Area Network (WLAN) Ad Hoc Networks is to increase services for mobile host and improve coverage of UMTS Networks. Inter-Domain routing is new challenge for Integrated UMTS and WLAN Ad Hoc Networks due to multiple base stations and gateways. This paper presents a comparative performance analysis for Inter-domain routing in Integrated UMTS and WLAN Ad Hoc Networks with symmetric Constant-Bit-Rate …
Published in Current Trends in Information Technology · Vol. 5, Issue 3, 2015 · pp. 21–34 Read article
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Evaluation of Effect of Seeds and Downloaders on the Performance of BitTorrent Network using Markov Chain Modeling
Abstract: AbstractIn this paper, we are using existing Markov chain model to study the effect of count of seeds and downloaders on transition rates, which is an important parameter in Markov chain modeling. As of now, many analytical modeling techniques are used to evaluate the performance of BitTorrent network and Markov chain model is found to be an effective, accurate and extendible one. Many researchers have studied BitTorrent networks to evaluate …
Published in Journal of Communication Engineering & Systems · Vol. 6, Issue 1, 2016 · pp. 30–37 Read article
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Performance Evaluation of Adaptive MIMO-OFDM System Model for Wireless Networks
Abstract: Enormous growth of wireless technologies and research trends in networking has developed many useful applications. Wireless networks with various protocols and standards are huge in demand because of the expansion of internet of things (IoT). All wireless networks demand for high data rate, low energy consumption, higher throughput, more reliability, better quality of services (QoS) and quality of information (QoI). This paper presents multiple in multiple out (MIMO) orthogonal frequency …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 1, 2017 · pp. 17–23 Read article