Scalability of Ad Hoc Dynamic Spectrum Access Networks

Abstract :-

Dynamic Spectrum Access allows wireless users to access a wide range of spectrum which increases a node’s ability to communicate with its neighbors, and spectral efficiency through opportunistic access to licensed bands. Our study focuses on the scalability of network performance, which we define in terms of network transport capacity and end-to-end throughput per node, as the network density increases. Continue reading Scalability of Ad Hoc Dynamic Spectrum Access Networks

Model-Based Approach to Demodulation of Co-Channel MSK Signals

Abstract :-
Co-channel interference limits the capacity of cellular systems, reduces the throughput of wireless local area networks, and is the major hurdle in deployment of high altitude communication platforms. It is also a problem for systems operating in unlicensed bands such as the 2.4 GHz ISM band and for narrow band systems that have been overlaid with spread spectrum systems. Continue reading Model-Based Approach to Demodulation of Co-Channel MSK Signals

ECE Project on Car Alarm System

Abstract :-
The basic control functions for this system include monitoring inputs (such as sensors, push buttons, etc) and controlling output signals (such as sirens, lights, LEDs, etc). These functions are easily implementable in an embedded processor. 4414 Microcontroller is used in this project as it is best suited for security systems Continue reading ECE Project on Car Alarm System

Report on FM Transmitter as a Jammer with Circuit Diagram

Cell phones and radio receivers are used everywhere these days. It’s great to be able to call anyone anytime. But unfortunately, restaurants, movie theatres, concerts, shopping malls and churches all suffer from the spread of cell phones because not all cell-phone users know when to stop talking. While most of us just grumble and move on, some people are actually going to extremes to retaliate. FM Jammer can be one of the solutions to this problem. Continue reading Report on FM Transmitter as a Jammer with Circuit Diagram

Reduced-sized Antenna for Mobile Computing

Abstract :-
In the project, two categories of reduced size antennas are considered to maintain good quality communication link between mobile computers. The first category concerns planar, reduced size antennas with fixed pattern offering high cross-polar radiation level. When polarization of an incident wave is changed, such type of antenna is still able to receive it due to its cross-polar component. The investigated antennas in this category include Printed Inverted F Antenna (and its derivatives) and a Circular Slot Antenna on finite-size ground plane. The second category antennas are Adaptive Polarization and Pattern diversity antennas. Continue reading Reduced-sized Antenna for Mobile Computing

Design of Conformal Antennas for Telephone Handsets

Abstract :-
The purpose of this thesis is to design a conformal antenna for a mobile handset. The first step was to choose a suitable planar triple-band antenna capable of operating at 900MHz, 1.8GHz and 2.0GHz. The antenna that was selected for this thesis is the E-shaped planar IFA. This antenna can easily be tuned for correct frequency operation and possess a compact design. The design was created using FEKO, an electromagnetic simulation software package. Once the planar version of the antenna was simulated, the antenna was made conformal. Continue reading Design of Conformal Antennas for Telephone Handsets