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521 articles for “In channel”
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Implementation of Direct Sequence Spread Spectrum using MATLAB
Abstract: AbstractA major concern in the design of communication system is to provide secure communication. The system may be required to provide a form of secure communication in a hostile environment such that transmitted signal is not easily detected or recognized by unwanted listeners. This requirement is fulfilled by signaling techniques known collectively as spread spectrum modulation. The main advantage of spread spectrum communication system is its ability to reject interference …
Published in Journal of Communication Engineering & Systems · Vol. 4, Issue 2, 2014 · pp. 7–11 Read article
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Relative Performance of BPSK and BFSK in Underground Mine Communication Considering Multipath and Bending Losses
Abstract: AbstractWireless/Mobile signals get strongly attenuated deep inside a building/tunnel/mine. In order to study the performance parameters, underground communication channel needs to be modeled. As a first step here we have practically tried two digital modulation methods BPSK and BFSK for underground communication. Wireless link was able to support data signals. Various measurements were made up to a depth of 30 m inside the mine. Beyond 30 m as more than …
Published in Journal of Communication Engineering & Systems · Vol. 4, Issue 2, 2014 · pp. 12–17 Read article
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Performance Analysis of DWT Based OFDM System using SRRC Filter in Mobile Wimax over Fading Environment
Abstract: AbstractWavelets amid its capability to provide simultaneous information in both time and frequency domain, along with minimization of interference and improved bandwidth efficiency, is considered broadly as an efficient approach to replace fast Fourier transform (FFT) in the conventional orthogonal frequency division multiplexing (OFDM) systems. Efficient filter pulses are employed spectrally in such systems in order to mitigate the effect of inter-symbol interference (ISI) as well as satisfy the bandwidth …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 1, 2017 · pp. 1–10 Read article
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Performance Analysis of Ultra-Short Junctionless DGMOS Nanowire Transistors with High-k Gate Dielectric
Abstract: AbstractIn this report, we present a comparative analysis of ultrashort 3-D junctionless nanowire DGMOS transistors using different high-k gate dielectric by virtually fabricating the device in Visual TCAD. The ultrashort devices having channel length of 20 nm were simulated and performances like I-V characteristics, transconductance etc. were analysed. It was found that HfO2 has better steady state performances as gate dielectric owing to better control of the channel over the …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 1, 2019 · pp. 35–42 Read article
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Design Simulation and Assessment of Low PAPR FBMC System for Energy Efficient 5G Applications
Abstract: As of late, filter bank multi-transporter (FBMC) has seemed incredible enthusiasm as an option in contrast to orthogonal frequencies Division Multiplexing (OFDM). FBMC plan has extended Frequency capability and low out of band (OOB) outpourings Compared to OFDM. In any case, FBMC still experiences high positions Peak-to-average power proportion (PAPR) in OFDM frameworks. Some OFDM-based PAPR decrease innovation has been received FBMC framework. In this paper, new advancements for PAPR …
Published in Journal of Communication Engineering & Systems · Vol. 11, Issue 1, 2021 · pp. 15–21 Read article
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Improvised Diffie Hellman Key Exchange Protocol
Abstract: Protecting exchange of data over an insecure network is very crucial to maintain confidentiality. Diffie- Hellman protocol is a fundamental key exchange method and has proved to be a secure mechanism to securely exchange the cryptographic keys. Ralph Markel developed this idea, which has got its name from Whitfield Diffie and Martin Hellman. In this protocol, the recipient and transmitter generate a standard secret key and then start talking to …
Published in Journal of Communication Engineering & Systems · Vol. 11, Issue 3, 2021 · pp. 21–27 Read article
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Securities Control in Ad Hoc Network on Scatternet
Abstract: This study presents and evaluates an ad hoc network formatting algorithm. The algorithm is discussed to feature the specifications of Bluetooth under a designed purpose, a limited range device with a host and numbers of connected devices wirelessly. There are many research and analyses done till today’s date for the selection of secured devices. Proposed solutions have been evaluated utilizing the Open Web Application Security Project (OWASP). Nowadays, Bluetooth is …
Published in Journal Of Network security · Vol. 10, Issue 2, 2022 · pp. 24–29 Read article
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Social Marketing in Public Health
Abstract: Social marketing in public health is application of commercial marketing concepts, tools, resources, skills and technologies to encourage socially beneficial behavior especially among poorly or inadequately served segments of the population. It can be product- or behavior-focused. It mainly aims at changing one’s behavior to promote health and prevent diseases for benefit of individual and society as a whole. Triad of social marketing comprises of behavioral goals, segmentation and marketing …
Published in Research and Reviews: A Journal of Health Professions · Vol. 2, Issue 1, 2012 · pp. 17–27 Read article
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Fundamentals and Recent Advances in Microreactor Catalysis and Flow Chemistry
Abstract: The processing technology of chemical reactions has changed quite a bit over the last few decades. For a long time, chemists relied on batch reactors having large containers where all the starting materials are mixed, and the reaction happens in one go. While this approach works, it has several drawbacks: poor heat control, uneven mixing, safety risks, and a lot of waste. Microreactors and flow chemistry offer a much better …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 2, 2026 · pp. 07–18 Read article
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Intelligent Paradigms in Subsea Connectivity: A Comprehensive Review of Artificial Intelligence in Underwater Communications
Abstract: Underwater wireless communication (UWC) plays a critical role in ocean exploration, environmental monitoring, offshore energy operations, disaster management, and naval defense. However, the underwater environment presents significant communication challenges, including severe signal attenuation, multipath propagation, Doppler effects, limited bandwidth, high latency, and energy constraints. Recent advancements in Artificial Intelligence (AI) and Machine Learning (ML) have emerged as promising solutions to address these limitations and enhance the efficiency, reliability, and adaptability …
Published in Journal of Artificial Intelligence Research & Advances · Vol. 13, Issue 3, 2025 Read article
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Performance Enhancement of Broadband Cellular Networks Using Massive MIMO Technology
Abstract: The rapid growth of mobile data traffic driven by smartphones, Internet of Things (IoT) devices, video streaming, and cloud-based applications has placed significant pressure on existing broadband cellular networks. As the need for faster data transmission, enhanced spectrum utilization, and dependable wireless communication continues to grow, Massive Multiple-Input Multiple-Output (Massive MIMO) has become a fundamental technology for modern communication networks, particularly in 5G and future-generation wireless systems. Massive MIMO technology …
Published in Journal of Communication Engineering & Systems · Vol. 16, Issue 2, 2026 · pp. 11–18 Read article
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Image Enhancement by Correction of Cllipped Pixels: An Exemplification
Abstract: Conventional images store an extremely constrained element scope of brightness. The genuine luma in the bright region of such pictures is regularly lost because of section. At the point when section changes the R, G, B shading ratios of a pixel, shading twisting likewise happens. In this paper, we propose an algorithm to improve both the luma and chroma of the clipping pixels. Our method is in view of the …
Published in Journal of Artificial Intelligence Research & Advances · Vol. 3, Issue 1, 2016 · pp. 30–38 Read article
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Using Artificial Neural Networking in Cryptography
Abstract: Cryptography system helps in transformation of information among authenticated users where there is no involvement of any third party using that information without that information with unauthorized access. This project implements encryption and decryption using neural network cryptography using AES key. The network construction will be generated solely on the parameters used in the training algorithm and the number of hidden neurons. In neural cryptography, both the communicating networks would …
Published in Journal of Artificial Intelligence Research & Advances · Vol. 7, Issue 2, 2020 · pp. 56–61 Read article
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Two-Level HM with Dual Constellation Mapping Level 2 for DVB-H
Abstract: Hierarchical modulation (HM) technique explained in DVB-H technology serves user with different quality of video data for TV on cellular phone. This newer modulation technique has shown good spectrum utilization with availability of HDTV and SDTV video-quality reception. SDTV quality is by default quality to receive in any channel condition while HDTV quality is restricted to healthy reception condition which is indirectly wasting spectrum up to certain extent. The proposed …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 1, Issue 2, 2014 · pp. 12–18 Read article
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Analogous Multichannel Communication Recatenation Scrutiny Using ARQ Technique
Abstract: AbstractThe aim of this paper is to assess the resequencing interference and the resequencing support residency, individually. Under the suspicion that all channels have a similar program rate, yet likely unique time-invariant blunder rates, we determine the prospect creating capacity of the resequencing shield inhabitance and the chances mass capacity of the resequencing delay. From numerical and ridicule up comes about, we dissect drifts in the mean resequencing cradle ownership …
Published in Journal of Advances in Shell Programming · Vol. 4, Issue 2, 2017 · pp. 1–4 Read article
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Handover System in Mobile Communication System
Abstract: Handover is the process of providing continuous communication when the mobile node (MN) moves from one cell region to another cell region. Handoff or handover transferred the data from one channel to another channel. Both hard handover and soft handover are to transfer the control from source cell to destination cell in Code Division Multiple Access (CDMA) and Non-CDMA network.Keywords: Handover, hand off, soft handover, hard handover, CDMA, cell, base …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 2, Issue 3, 2015 · pp. 14–17 Read article
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Spectrum Sensing over Rayleigh Fading in Mutihop Cooperative Networks
Abstract: This paper presents a novel cooperative spectrum sensing for the performance analysis of the multihop system model. In this paper, the performance of cooperative spectrum sensing is investigated through intensive simulation analysis by means of energy detection over Rayleigh fading distribution in multihop scenario. The closed form expressions for end-to-end SNR PDF of multihop networks over Rayleigh fading channels with different hard fusion methods are analyzed. Based on the framework …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 3, Issue 1, 2016 · pp. 1–8 Read article
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Performance Comparison of MANET based on Data Rate and Packet Loss using Fuzzy Logic Controller
Abstract: AbstractMobile ad-hoc networks consist of mobile nodes. These nodes do not follow any particularly topology. Now days many humans are dependent on internet for their daily chores but congestion is one of the major issues, which affect the data network. Real time multimedia applications have come into existence like audio, video etc. So, the congestion problem is also increasing. Thus, in order of control congestion, various schemes have developed. In …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 4, Issue 3, 2017 · pp. 25–33 Read article
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Analysis of Prior Based Fog Removal Methods
Abstract: Fog is defined as the weather condition in which visibility becomes less than 1000 m. Fog is caused due to plenty of reasons like bad weather, pollution, drizzle etc. Images degraded by fog have poor contrast and colour allegiance. The efficiency of image-based applications highly degrades due to foggy input images. So fog removal of images is a necessary task in computer vision applications and computational photography. This paper highlights …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 5, Issue 3, 2018 · pp. 29–37 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