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Low-density parity-check (LDPC) codes are capacity-approaching forward error correction codes that operate at signal-to-noise ratio (SNR) decoding thresholds very near to the capacity limits. Receivers designed for less optimal codes might not function smoothly at the lower values of SNR where LDPC codes can operate. In particular, an artifact of low-SNR receiver operation is the increased probability...
It is common in data transmissions that some information is more important than others. This is especially true in space communications where mission critical information or science data are high priority. In this work, we propose a simple yet constructive scheme to send high priority data reliably and efficiently using Luby transform (LT) codes. The new proposed scheme modifies the conventional LT...
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