Transversal GRAND for Network Coded Data

Ioannis Chatzigeorgiou

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arXiv · 2112.05854

Transversal GRAND for Network Coded Data

Ioannis Chatzigeorgiou

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Abstract

This paper considers a transmitter, which uses random linear coding (RLC) to encode data packets. The generated coded packets are broadcast to one or more receivers. A receiver can recover the data packets if it gathers a sufficient number of coded packets. We assume that the receiver does not abandon its efforts to recover the data packets if RLC decoding has been unsuccessful; instead, it employs syndrome decoding in an effort to repair erroneously received coded packets before it attempts RLC decoding again. A key assumption of most decoding techniques, including syndrome decoding, is that errors are independently and identically distributed within the received coded packets. Motivated by the `guessing random additive noise decoding' (GRAND) framework, we develop transversal GRAND: an algorithm that exploits statistical dependence in the occurrence of errors, complements RLC decoding and achieves a gain over syndrome decoding, in terms of the probability that the receiver will recover the original data packets.

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Ioannis Chatzigeorgiou. 2021-12-10. Transversal GRAND for Network Coded Data. https://arxiv.org/abs/2112.05854

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