Optical Wireless Communications IR for Wireless Connectivity

Over the last three decades, interest in Infrared (IR) technology as a
medium to convey information has grown considerably. This is reflected
by the increasing number of devices such as laptops, PDAs, and mobile
phones that incorporate optical wireless transceivers and also by the
increasing number of optical wireless links available for indoor and
outdoor use. The popularity of IR is based on the advantages it has over
radio including unregulated bandwidth, immunity to radio interference,
and inherent security. Optical Wireless Communications examines some of
the most important features of optical wireless communication systems.
It considers the benefits and limitations of IR as a medium conveying
information wirelessly and compares the advantages and disadvantages of
infrared to microwave and other radio systems. It also details the
evolution of IR communication systems and describes atmospheric and
other types of data transmission limitations. The book presents design
fundamentals of optical concentrators, as well as a review of some of
the most important receiver optical front-ends (containing imaging or
non-imaging concentrators and optical filters), including an explanation
of the different sources of infrared noise and an introduction to eye
safety. It also describes optical wireless transmitter and receiver
design issues, typical modulation, coding, and multiple access
techniques, and introduces IrDA protocols and wireless IR networking.

Download :
http://w16.easy-share.com/1700292752.html