Adaptive Modulation Coding Method based on Minimum Packet Loss Rate in AOS Communication System

Abstract

Aiming at the problem of increasing packet loss rate and decreasing throughput caused by the characteristics of high data burst and high channel error rate in the AOS space communication system, this paper considers the factors of queue packet loss and transmission error packet loss and proposes an adaptive modulation coding method based on minimum packet loss rate in the AOS communication system. Firstly, a system packet loss objective function is established, and the modulation coding mode can be determined by solving the objective function minimum. Secondly, the modulation coding mode is dynamically adjusted according to certain rules, determined by the channel state and the queue state jointly. Finally, the system packet loss rate is reduced and the transmission performance of the system is improved. The theoretical analysis and simulation results show that compared with the SLBCCQ method, this method can reduce the system packet loss rate by up to 30%. Meanwhile, compared with the AMC algorithm, it can reduce the system packet loss rate by 41.7%.

Constellation Optimization for Phase-Shift Keying Coherent States With Displacement Receiver to Maximize Mutual Information

“…After Voyager 2 [22], Jet Propulsion Laboratory (JPL) at NASA took immense interest in QIT and its application for deep-space communication using the free-space optical channel. In last few decades, a number of treatise have been written and theories have been developed for applications such as deep-space communication, [23] channel coding and data compression, [24]- [26] cryptography and encryption, [27]- [30] and quantum internet [31]- [35] -all of them employing FSO communication channel.…”