|
|
|
|
Indoor Non-directed Optical Wireless Communications - Optimization of the Lambertian Order
|
|
|
|
|
|
|
|
نویسنده
|
Ghassemlooy Z. ,Wu D. ,Khalighi M. A. ,Tang X.
|
|
منبع
|
journal of electrical and computer engineering innovations - 2013 - دوره : 1 - شماره : 1 - صفحه:1 -9
|
|
چکیده
|
For an indoor non-directed line of sight optical wireless communication (nlos-owc) system we investigate the optimized lambertian order (olo) of light-emitting diodes (leds). we firstly derive an expression for the olo from a conventional lambertian led model. then, we analyze the indoor multi-cell nlos-owc channel characteristics including the optical power distribution and the multipath time dispersion for two cases of one-cell and four-cell configurations. furthermore, we estimate the transmission bandwidth by simulating the channel frequency response. numerical results presented show that, by using olo a significant improvement of the transmission bandwidth can be achieved for an indoor nlos-owc system, in particular, for multi-cell configurations.
|
|
کلیدواژه
|
Optimum Lambertian order ,LED ,Optical wireless Communication ,Root mean square (RMS) ,Delay spread
|
|
آدرس
|
Northumbria University, Faculty of Engineering and Environment, Optical Communications Research Group, UK, Northumbria University, Faculty of Engineering and Environment, Optical Communications Research Group, UK, Institute Fresnel, Ecole Centrale Marseille, France, Tsinghua University, Department of Electronic Engineering, China
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|