Credits: 3 (3-0-0)
Description
General introduction, optical channel modeling, background noise calculations, Modulation techniques: M-PPM, OOK, mxn PAPM, subcarrier modulation, DPPM, DHPIM, DAPPM, psd and bandwidth requirement evaluation, Detection techniques - Photon counter, PMT, coherent techniques, bit error rate evaluation in presence of atmospheric turbulence, concept of adaptive threshold, effect of turbulence and weather conditions viz., drizzle, haze fog on error performance and channel capacity, link availability.