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IEEE/ICACT20260355 Question.11 Questioner: wangsy@dsp.ac.cn 2026-02-08 오후 2:24:16	IEEE/ICACT20260355 Answer.11 Answer by Auhor xueyy@dsp.ac.cn 2026-02-08 오후 2:24:16
What role does the Raptor code play in this solution? And which type of errors/packet losses does it mainly aim to address?	In the ARRCT solution, the Raptor code serves as a rateless fountain code that provides forward error correction (FEC) capability. It enables the recovery of all original data from a number of received encoded packets slightly greater than the number of source packets, without requiring retransmissions. This significantly enhances transmission reliability and packet-loss resilience. The Raptor code primarily addresses random packet losses and long-tail latency caused by the unpredictability of random routing paths and dynamic network conditions. It is particularly effective in environments with high packet loss rates and fluctuating path quality, mitigating the increase in session completion time due to packet loss and timeout retransmissions.

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