Short-packet Transmission via Variable-Length Codes in the Presence of Noisy Stop Feedback
Abstract
We present an upper bound on the error probability achievable using variable-length stop feedback codes, for a fixed size of the information payload and a given constraint on the maximum latency and the average service time. Differently from the bound proposed in Polyanskiy et al. (2011), which pertains to the scenario in which the stop signal is sent over a noiseless feedback channel, our bound applies to the practically relevant setup in which the feedback link is noisy. By numerically evaluating our bound, we illustrate that, for fixed latency and reliability constraints, noise in the feedback link can cause a significant increase in the minimum average service time, to the extent that fixed-length codes without feedback may be preferable in some scenarios.
Keywords
Cite
@article{arxiv.1909.01049,
title = {Short-packet Transmission via Variable-Length Codes in the Presence of Noisy Stop Feedback},
author = {Johan Östman and Rahul Devassy and Giuseppe Durisi and Erik G. Ström},
journal= {arXiv preprint arXiv:1909.01049},
year = {2020}
}
Comments
Submitted to a Transactions on Wireless Communications