Tag Archive: 'opnet manual'

Transient thermal analysis of the conical rotor motor using LPTN and Finite Volume Method

For this investigation, the conical rotor motor of total enclosed fan cooling (TEFC) with complexity geometry is taken as a typical example . The air flow between the fins caused by the centrifugal fan embedded at the ending bearing is uncertain, thus the 3D finite volume method (FVM) model is build to estimate the flow […]

PARR: Pin access planning and regular routing for self-aligned double patterning

Pin access has become one of the most difficult challenges for detailed routing in 14nm technology node and beyond, where double patterning lithography has to be used for manufacturing lower metal layers with tight pitches. Self-aligned double patterning (SADP) provides better control on the line edge roughness and overlay but it has very restrictive design […]

Overhearing Protocol Design Exploiting Inter-Cell Interference in Cooperative GreenNetworks

The conventional two-way relaying (TWR) protocol requires that the transmitter (receiver) in one direction must be the receiver (transmitter) in the other direction, an limitation precluding the application of the TWR for sophisticated realworld wireless networks. In this paper, we study a more general multi-cell system consisting of a downlink (DL) traffic in one cell and […]

Nano-patterned permalloy thin film enabled electrically tunable spiral inductor

Inductors are one of the key components and are widely used in modern RFIC and MMIC systems. With the increasing trend of working frequencies, high performance inductors are greatly demanded and indispensable in current and future communication systems. However, inductors generally take large chip area and play a limiting role in further reducing size and […]

Security–A Perpetual War: Lessons from Nature

For ages, people have sought inspiration in nature. Biomimicry has propelled inventions from Velcro tape to “cat’s eyes” retroreflective road markers. At the same time, scientists have been developing biologically inspired techniques, including genetic algorithms and neural and sensor networks. Although a first glance shows no direct connection between the Internet’s offensive and defensive techniques and […]

Proactive Relay Selection With Joint Impact of Hardware Impairment and Co-Channel Interference

In this paper, we investigate the end-to-end performance of dual-hop proactive decode-and-forward relaying networks with Nth best relay selection in the presence of two practical deleterious effects: i) hardware impairment and ii) co-channel interference. In particular, we derive new exact and asymptotic closed-form expressions for the outage probability and average channel capacity of Nth best partial and […]

Energy efficient hybrid MAC protocol for large scale wireless sensor networks

In this study, a hybrid, energy efficient MAC (Medium Access Control) protocol has been developed for usage in dense WSN (Wireless Sensor Network) applications. In the designed hybrid MAC, favorable aspects of both CSMA (Carrier Sense Multiple Access) and TDMA (Time Division Multiple Access) techniques are considered. Consequently, a MAC protocol which is more energy […]

Multi-Focus Image Fusion Based on Spatial Frequency in Discrete Cosine Transform Domain

Multi-focus image fusion in wireless visual sensor networks (WVSN) is a process of fusing two or more images to obtain a new one which contains a more accurate description of the scene than any of the individual source images. In this letter, we propose an efficient algorithm to fuse multi-focus images or videos using discrete cosine transform […]

Optimum Wirelessly Powered Relaying

This letter maximizes the achievable throughput of a relay-assisted wirelessly powered communications system, where an energy constrained source, assisted by an energy constrained relay and both powered by a dedicated power beacon (PB), communicates with a destination. Considering the time splitting approach, the source and relay first harvest energy from the PB, which is equipped […]

Efficient scheduling of sporadic tasks for real-time wireless sensor networks

Industrial automation requires hard real-time delivery of data that can be of periodic or sporadic in nature. It is challenging to ensure hard real-time delivery of periodic and sporadic data to a multi-hop away destination in a bandwidth constrained environment, such as wireless sensor networks. In this regard, research has been done for joint scheduling […]