Comparative Study on Low-Rate Forward Error Correction Codes in Downlink Satellite-to-Ground Laser Communications
نویسندگان
چکیده
In high-speed satellite-to-ground laser communications, it has been shown that the Markov-based erasure channel model is well suited for the downlink experiment results. In that model, since the average erasure rate is relatively high, a low-rate error correction code is needed. In this paper, we focus on the application of low rate systematic Luby transform (SLT) code and show that the performance of SLT code is better than low-density generator matrix (LDGM) code in the downlink satellite-to-ground laser channel when using a short interleaver. Keywordssatellite-to-ground laser communications; LT codes; LDGM codes; forward error correction; interleaver.
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