Bøger af Sheetal Bukkawar

This book studies the capacity of hybrid wireless networks with opportunistic routing (OR). We first extend the opportunistic routing algorithm to exploit high-speed data transmissions in infrastructure network through base stations. We then develop linear programming models to calculate the end-to-end throughput bounds from multiple source nodes to single as well as multiple destination nodes. The developed models are applied to study several hybrid wireless network examples. Through case studies, we investigate several factors that have significant impacts on the hybrid wireless network capacity under opportunistic routing, such as node transmission range, density and distribution pattern of base stations (BTs), and number of wireless channels on wireless nodes and base stations. Our numerical results demonstrate that opportunistic routing could achieve much higher throughput on both ad hoc and hybrid networks than traditional unicast routing (UR). Moreover, opportunistic routing can efficiently utilize base stations and achieve significantly higher throughput gains in hybrid wireless networks than in pure ad hoc networks especially with multiple-channel base stations.

The technology is rapidly striding towards the progress of modern communication system where wireless communication technology plays a vital role.]. To realize an efficient wireless communication technology an efficient antenna is a basic essence. To realize a compact efficient antenna system several researches is going on in different corners of the world. Achieving compact design, the fractal antenna configuration has an influential advancement in the area of antenna development. In other aspect, the fractal antenna contributes multi-frequency operation which will be helpful for deploying multi-functional wireless communication terminals. The wireless communication required electrical small antenna for developing handheld mobile communication terminal with higher reliability. This book will provide an in depth knowledge about multi band fractal antenna design and its analysis.