Feedback Halves the Dispersion for Some Two-User Broadcast Channels with Common Message
Paper in proceedings, 2017

We investigate the maximum coding rate achievable on a two-user broadcast channel for the case where a common- message is transmitted using fixed-blocklength codes with feed- back. Specifically, we focus on a family of broadcast channels com- posed of two antisymmetric Z-channels. For this setup, we obtain matching upper and lower bounds on the dispersion term in the asymptotic expansion of the maximum coding rate. These bounds reveal that the dispersion is halved compared to the no-feedback case.


Kasper F Trillingsgaard

Aalborg University

Wei Yang

Princeton University

Giuseppe Durisi

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Petar Popovski

Aalborg University

IEEE International Symposium on Information Theory - Proceedings

21578095 (ISSN)

196-200 8006517

SWIFT : short-packet wireless information theory

Swedish Research Council (VR), 2017-01-01 -- 2020-12-31.

Areas of Advance

Information and Communication Technology

Subject Categories

Communication Systems

Electrical Engineering, Electronic Engineering, Information Engineering



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1/9/2020 9