Abstract:Because of the limited power and long propagation distance between spacecraft and Earth station, the high power efficiency is more important for space information system than others terrestrial communication system. Motivated by the potentially large gain achievable with iterative decoding, one novel coded modulation scheme based on LDPC code and FQPSK (Feher's QPSK) is designed and optimized in this paper, which can alleviate the challenge of signal power huge loss of communications path in space information … Show more
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