Wireless Optical Communication Systems

The use of optical free-space emissions to provide indoor wireless communications has been studied extensively since the pioneering work of Gfeller and Bapst in 1979 [1]. These studies have been invariably interdisciplinary involving such far flung areas such as optics design‚ indoor propagation studies‚ electronics design‚ communications systems design among others. The focus of this text is on the design of communications systems for indoor wireless optical channels. Signalling techniques developed for wired fibre optic networks are seldom efficient since they do not consider the bandwidth restricted nature of the wireless optical channel. Additionally‚ the elegant design methodologies developed for electrical channels are not directly applicable due to the amplitude constraints of the optical intensity channel. This text is devoted to presenting optical intensity signalling techniques which are spectrally efficient‚ i.e.‚ techniques which exploit careful pulse design or spatial degrees of freedom to improve data rates on wireless optical channels.

Từ khóa: Wireless Optical Communication Systems, wireless communications, electronics design, communications systems, hệ thống thông tin, kỹ thuật viễn thông, công nghệ truyền thông