Abstract
In deep space exploration, spacecrafts need to deliver large volume of time-insensitive scientific data to deep space station. However, power supply of spacecrafts is only from the solar energy and battery. That is to say, these spacecrafts are energy-limited. In order to reduce energy consumption, prolong the life of spacecrafts and send more data, the transmission protocol must be efficient and low-energy-waste. To achieve the aim, this paper proposes a network-coding-based mutually cooperative transmission protocol (NMCTP). Compared with the known protocols, i.e., COPE protocol and repeating transmission protocol, NMCTP can achieve higher diversity gain, and lower system outage probability.
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