round trip propagation time
Indoor Location Based on IEEE 802.11 Round-Trip Time Measurements with Two-Step NLOS Mitigation
... where P ref is the RSS measured in logarithmic units at 1 m; P is the RSS measured in logarithmic units at the actual distance and α is the path loss exponent. According to [22], for any distance under 20 m in LOS, α is ...
22
On the Geolocation Bounds for Round-Trip Time-of-Arrival and All Non-Line-of-Sight Channels
... line propagation may be severely attenuated and considered ...principles: time- of-arrival (TOA), time-difference-of-arrival (TDOA), and round-trip time-of-arrival ...
10
Accurate and Integrated Localization System for Indoor Environments Based on IEEE 802 11 Round Trip Time Measurements
... NLOS propagation paths has been considered the main drawback for localization schemes to estimate the position of a (Mobile User) MU in an indoor ...(Round-Trip Time) RTT measurements in an ...
13
Improving Efficiency to Transfer Data in Under Water Sensor Networks
... efficient time synchronization algorithms has been designed for mobile UWSNs [15] but Mobi-Sync is considered only for dense ...the time synchronization of these ...the round trip time ...
5
Practical Network-Based Techniques for Mobile Positioning in UMTS
... (round trip time) that emerged from Cell ID+TA (timing advance) developed for GSM (global system for mobile communication) [13, ...multipath propagation and by application of re- ceiver ...
15
The “round trip” theory for reconstruction of Green's functions at passive locations
... fields): Time reversal ...a time- reversed signal, i.e., one that is captured at the receiver, time-reversed, and retransmitted back to the source, can be expressed in terms of a convolution of the ...
9
Low-Altitude UAV-Based Internet of Things Services: Comprehensive Survey and Future Perspectives
... Machine-type-communications (MTC), or alternatively machine-to-machine (M2M) communications, refers to data communication among IoT devices without any human intervention [170], [171]. M2M devices cover a broad variety ...
27
Implementation of ultrasonic ranging and fire safety for blind person
... This system presents a concept to provide a smart electronic aid for blind people. The system is intended to provide overall measures artificial vision and object detection, real time assistance via global ...
6
Component Measurement using Ultrasonic Sensor
... elapsed time between the sound wave being generated and the sound wave bouncing back, it is possible to calculate the distance between the sonar sensor and the ...the time for the sound wave to return and ...
5
Confederation of Autonomous System to Reduce the Looping Problem
... each time the packet loss is measured after sending 50 ping packets each ...The time taken to find alternate path is nothing but convergence time which is tabulated for 10 experiments in the ...
5
Laser-seeding dynamics with few-cycle pulses: Maxwell-Bloch finite-difference time-domain simulations of terahertz quantum cascade lasers
... recovery time of 15 ps, and these are also shown in ...per round trip and an asymmetric pulse ...per round trip and a null in the field in each round ...
7
A middleware for pervasive situation-awareness
... the round-trip time of a situation recognition request, basically a summary of the overall performance of the system, and we show that by appropriately distributing the recognition load between ...
15
Genetic Algorithms for Scheduling and Optimization of Ore Train Networks
... Our experiments compare optimization techniques based on the four main styles. We first use a standard industry approach that is implemented in a way to give priority to the trains going towards the port. In other words, ...
12
2017_Lynn.pdf
... network time elapsed during the plan-transmission process, the time taken to complete a task with the robot, and measures of planner performance including the number of vertices and edges generated for each ...
15
Can negative electricity prices encourage inefficient electrical energy storage devices?
... The fi rst mechanism occurs when an in fl exible electricity generation mix coincides with a low demand, giving rise to a potential oversupply. This can be caused when generators decide that the cost associated with ...
16
INTELLIGENT SELF TUNING PID CONTROLLER USING HYBRID IMPROVED PARTICLE SWARM OPTIMIZATION FOR ULTRASONIC MOTOR
... the round-trip-time of a packet and causes loss of ...in round-trip-time triggers the congestion avoidance mechanism and slows the window growth which reduces the throughput ...
10
Migration from SERCOS III to TSN - Simulation Based Comparison of TDMA and CBS Transportation
... (2) Adaption of application interface: SERCOS III spans this interface over several frames, which are sent by a master and forwarded between the participants. The protocol participants read data out of these frames and ...
11
PERFORMANCE EVALUATION OF CONGESTION CONTROL PROTOCOLS TCP-RENO, VEGAS, LP, WESTWOOD IN WIRELESS NETWORK
... In this work, a comparative study on the performances of Congestion Control Protocols like TCP-Reno, TCP- Vegas, TCP-LP, and TCP-Westwood with various performance metrics can be evaluated. The performance of network can ...
9
Diagnosing Salem University Lokoja Network for Better Network Performance
... real- time) such as Voice over IP (VoIP) calls, multimedia and even non real-time applications like file transfer protocol (FTP), e-mails, etc have been ...the time, the problem of network breakdown ...
7
Optimization of Passive Optical Burst Switching Networks
... holding time distribution and their performances under asymmetrical cases and illustrated that when the approximations were used for network dimensioning, their error was ...
5