RETRACTED ARTICLE: Free space optics communication channel with amplitude/frequency shift keying modulation technique based raised cosine line coding
Mahmoud M. A. Eid, Vishal Sorathiya, Sunil Lavadiya, Ismail A. Abd El-Aziz, Ahmed Nabih Zaki Rashed
Abstract
Abstract The objective of the study is to simulate frequency shift keying (FSK)/amplitude shift keying (ASK) modulation schemes with raised cosine line coding based free space optics channel in clear weather conditions. The max. Q and optical signal/noise ratio (OSNR) with FSO channel length variations are simulated for the previous and proposed models at DRs of 10 Gbps, and also the max. Q factor with data rate (DR) variations is demonstrated for the previous and proposed models at 10 km FSO channel length. Max. Q , min. BER, signal power (SP), noise power, and total optical power (TOP) based FSK and ASK modulation schemes are illustrated through APD receiver with FSO channel length of 10 km.