Satellite-based services, including 5G communications, require efficient high-speed communication technology. The Consultative Committee for Space Data System (CCSDS)recommends the 4 Dimension 8-ary Phase Shift Keying Trellis Coded Modulation (4D-8PSK-TCM) system to transmit large amounts of data at high speeds using X-Band, which is often used by Low Earth Orbit (LEO) satellites. In this paper, we explain the 4D-8PSK-TCM decoder with transmission efficiency of 2.0 bits/channel-symbol and build simulation model using MATLAB. The performance is evaluated in terms of the Bit Error Rate(BER) according to trace-back depth of the Viterbi decoder. We validate that the simulation model does not differ in BER performance from that of CCSDS. Also, we confirmed that the deeper trace-back depth of the Viterbi Decoder, the worse BER performance.
This work was supported in part by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2017M1A3A4A01037205).ACKNOWLEDGMENT This work was supported in part by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2017M1A3A4A01037205).
