Matlab based performance replication in high altitude platforms (HAPs) communication system

This thesis considers the examination by simulation of a digital narrow-band communication system for a scenario which consists of a High-Altitude aeronautical/spacecraft Platform (HAP) and fixed/mobile terrestrial transceivers. The aeronautical channel is modeled considering geometrical (angle of elevation vs. horizontal distance of the terrestrial reflectors) and statistical arguments and under these circumstances a serial concatenated coded digital transmission is investigated for several assumptions related to radio-electric coverage areas. Different flaws which can affect the signal strength are investigated in this particular case. We have considered specific modulation type (Differential Phase Shift Keying Model) and three basic channel types to model the aeronautical channel. Specific Bit Error Rate and Signal to Noise ratio per bit are considered to evaluate channel performance. The results indicate a good viability for the communication system proposed and analyzed.