Bandwidth Estimation in Network Probing Techniques Utilizing Min-Plus Algebraic Methods
Diagnosis of Anemia using Non-Invasive Anemia Detector through Parametrical Analysis
The Effectiveness of Jaya Optimization for Energy Aware Cluster Based Routing in Wireless Sensor Networks
Stress Analysis and Detection from Wearable Devices
Intrusion-Tolerant Sink Configuration: A Key to Prolonged Lifetime in Wireless Sensor Networks
Channel Estimation and It’s Techniques: A Survey
Impact of Mobility on Power Consumption in RPL
FER Performance Analysis of Adaptive MIMO with OSTBC for Wireless Communication by QPSK Modulation Technique
Implementation of Traffic Engineering Technique in MPLS Network using RSVP
Performance Evaluation of Advanced Congestion Control Mechanisms for COAP
DGS Based MIMO Microstrip Antenna for Wireless Applications
A Review on Optimized FFT/IFFT Architectures for OFDM Systems
Balanced Unequal Clustering AlgorithmFor Wireless Sensor Network
HHT and DWT Based MIMO-OFDM for Various ModulationSchemes: A Comparative Approach
Study and Comparison of Distributed Energy Efficient Clustering Protocols in Wireless Sensor Network: A Review
Diagnosis of Anemia using Non-Invasive Anemia Detector through Parametrical Analysis
SCADA or Supervisory Control And Data Acquisition is a system that allows companies to monitor and control industrial processes locally or at remote locations, gather and process real-time data, interact with devices such as sensors, valves, pumps, and motors through a human-machine interface (HMI) software, and record events into a log file. This project demonstrates a wireless SCADA system using a Raspberry Pi 3 Model B as the main unit which communicates with a Remote Terminal Unit (RTU) controlled by Arduino Nano. The graphical user interface (GUI) for central monitoring and control is hosted in the main unit while the RTU is equipped with sensors and actuators. The results indicate that the communication between the main and remote terminal units is a significant and potentially troublesome aspect of the system which must be carefully designed considering ease-of-use, latency, reliability, efficiency, and security. The study concluded that a Raspberry Pi 3 is a viable solution for implementing a wireless SCADA system together with microcontrollers and suitable communication modules.
MANETs are infrastructure less networks where each node must cooperate in the multi- hop routing process. Due to inherent characteristics such as dynamic topologies, band-width constraints, Energy constraints and distributed operation makes it a challenging area. Among the different categories of routing protocols, proactive routing protocols category is opted for the present study. In proactive routing protocols, Source Tree Adaptive Routing (STAR) with Least Overhead Routing approach (LORA) is chosen because it has less Network load when compared to Optimum Routing Approach (ORA). From the previous study of STAR routing protocol, it has a significant affect at lower mobility for all network sizes. In this paper, the most significant factor is identified to enhance the performance of defacto STAR routing protocol to support real time communication considering network size, mobility speed and Time to live (TTL) with response metrics Throughput, End-to-End Delay, Average Jitter using Taguchi Design of Experiments. At different network sizes with different lower mobility values, TTL is found as the most significant factor. We simulated the performance of STAR using QualNet simulator. According to the characteristics of a network routing protocol TTL plays a vital role. If TTL is too low, connection cannot be established and if it is too high energy consumption increases, which in turn affects the network life time. Our DOE experimental results revealed that, TTL is the most significant factor to enhance the performance of defacto STAR for MANETs to support real time communication. So, we conclude that our experimental results are strengthening the theoretical concept of the time-sensitive configurable parameters of the STAR routing protocol.
In Saturated conditions burst data can be generated for voice queue. IEEE 802.11e is not supported a large amount of burst transmission for any AC. IEEE 802.11e EDCA parameter set enables the Voice traffic to send several packets per one transmission opportunity (TXOP). If the network is saturated with all type of flows, it takes several TXOPs to complete transmission of all generated packets and this takes more time. Voice flow access the channel more times but to serve all generated packets, voice Access category (AC) needs more TXOPs. It indirectly affects the channel winning probability of other Queues. In this paper, a channel accessing method for Voice queue is proposed. If more voice packets has been generated for voice AC, the queue length will be increased. This length reaches ideal queue length, then adaptive channel access mechanism invoked. This method suspends the backoff procedure and take the channel unconditionally. So that bakoff time will be reused as TXOP instead of waiting. This method enables the voice access category to transmit more packets with in single TXOP. The simulations are conducted and results are analyzed. The results show that 91% of voice flow even at 512 Kbps has been sent over the network.
The Internet Engineering Task Force (IETF) designed the Constrained Application Protocol (CoAP) for Internet of Things (IoT) gadgets. The IoT devices with restricted radio channel limits and equipment assets are called constrained devices. Network communications in constrained devices face congestion because of their limited resources. To face the congestion CoAP uses a basic (CC) congestion control mechanism for solid transmission. Alternative CoAP CC mechanisms CoCoA and CoCoA+ are introduced by the IETF Constrained RESTful Environments (CoRE) Working Group. However, there had been limited evaluations have done on CoAP CC mechanisms. In this paper, we focus on this crucial study and perform evaluations that show how the default and alternative CC mechanisms contrast with one another. We utilize the Cooja simulation condition, which is one of the Contiki advancement toolset for simulating CoAP CC mechanisms in different network topologies and varying in different link delivery ratios in global event traffic scenario. By evaluating the generated results CoCoA+ shows better performance compare to Default CoAP and CoCoA.
To keep the authoritative officials aware about issue of pollution and pollutant in industrial area system is developed to keep track of these pollutant information which are harmful to living species. The system uses sensors to detect the pollutants which are input to the system using IoT platform when these pollutant in air and water crosses the limit. The change in pollutant level can be remotely monitored by officials to take necessary actions. This paper presents the design of a system that can efficiently measure the level of SO2, NO2, CO in Air and temperature, transparency and pH in water around industrial area and send alert message about atmospheric condition to the respective authority in real time. This remote monitoring system is developed using Arduino ATMega328P, NodeMCU and sensors to monitor the environment of industries. The methodology used finds more efficient when compared to the existing technologies. The remote monitoring system uses BLYNK App and GSM module to monitor the environmental conditions without human intervention. The system was successfully able to monitor the some compound elements of Air and Water Quality indoor and outdoor environments of industries. The system finds to be accurate and efficient compared to existing monitoring system without human intervention and also gives an idea to implement the system in other scenario.