Common-message broadcast channels with feedback in the nonasymptotic regime: Full feedback
Artikel i vetenskaplig tidskrift, 2018

We investigate the maximum coding rate achievable on a two-user broadcast channel for the case where a common message is transmitted with feedback using either fixed-blocklength codes or variable-length codes. For the fixed-blocklength-code setup, we establish nonasymptotic converse and achievability bounds. An asymptotic analysis of these bounds reveals that feedback improves the second-order term compared to the no-feedback case. In particular, for a certain class of antisymmetric broadcast channels, we show that the dispersion is halved. For the variable-length-code setup, we demonstrate that the channel dispersion is zero.

finite blocklength regime

variable-length coding

Broadcast channel with common-message

channel dispersion

full feedback


Kasper Fløe Trillingsgaard

Aalborg Universitet

Wei Yang

Qualcomm Technologies

Giuseppe Durisi

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Petar Popovski

Aalborg Universitet

IEEE Transactions on Information Theory

0018-9448 (ISSN)

Vol. 64 12 7719-7741 8456630







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