Empirical Evaluation of 4 QAM and 4 PSK in OFDM-based Inter-Satellite Communication System

Abstract

Abstract Inter-satellite communication is a free-space optical technology which is used to establish communication between satellites in space. This work is focused on the transmission of 10 Gbps data over 4,000 km inter-satellite communication link by incorporating orthogonal frequency division multiplexing scheme. Moreover, a comparison of 4 quadrature amplitude modulation and 4 phase shift key encoding scheme is also presented in this work. The performance of proposed system is evaluated in terms of signal-to-noise ratio, total received power, radio-frequency spectrum and constellation diagrams.