ABSTRACT
As in all communication systems, to design, implement and operate efficient and high-quality transmission links, it is essential that the characteristics of the propagation channel are well understood. Characterisation of an optical wireless communication channel is performed by means of the channel impulse response, which is then used to analyze and combat the effects of channel-induced interference and distortions. In this chapter, a number of propagation models are considered (ceiling bounce, Hayasaka-Ito, and spherical) for both line-of-sight and non-line-of-sight types of link configurations, which are applicable to both outdoor and indoor environments. Also introduced in this chapter are artificial light sources and their models. Detailed outdoor channel models considering the atmospheric conditions (i.e., fog and turbulence) are investigated in this chapter, too. Supporting Matlab codes are also presented in Chapter 3.
