Broadcast Channels with Heterogeneous Arrival and Decoding Deadlines: Second-Order Achievability - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2023

Broadcast Channels with Heterogeneous Arrival and Decoding Deadlines: Second-Order Achievability

Résumé

A standard assumption in the design of ultra-reliable low-latency communication systems is that the duration between message arrivals is larger than the number of channel uses before the decoding deadline. Nevertheless, this assumption fails when messages arrive rapidly and reliability constraints require that the number of channel uses exceed the time between arrivals. In this paper, we consider a broadcast setting in which a transmitter wishes to send two different messages to two receivers over Gaussian channels. Messages have different arrival times and decoding deadlines such that their transmission windows overlap. For this setting, we propose a coding scheme that exploits Marton's coding strategy. We derive rigorous bounds on the achievable rate regions. Those bounds can be easily employed in point-to-point settings with one or multiple parallel channels. In the point-to-point setting with one or multiple parallel channels, the proposed achievability scheme outperforms the Normal Approximation, especially when the number of channel uses is smaller than $200$. In the broadcast setting, our scheme agrees with Marton's strategy for sufficiently large numbers of channel uses and shows significant performance improvements over standard approaches based on time sharing for transmission of short packets.
Fichier principal
Vignette du fichier
2308.14228-2.pdf (665.34 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04360147 , version 1 (21-12-2023)

Licence

Paternité

Identifiants

Citer

Homa Nikbakht, Malcolm Egan, Jean-Marie Gorce, H. Vincent Poor. Broadcast Channels with Heterogeneous Arrival and Decoding Deadlines: Second-Order Achievability. 2023. ⟨hal-04360147⟩
15 Consultations
2 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More