Feedback Halves the Dispersion for Some Two-User Broadcast Channels with Common Message
Paper in proceeding, 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.
Author
Kasper F Trillingsgaard
Aalborg University
Wei Yang
Princeton University
Giuseppe Durisi
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Petar Popovski
Aalborg University
IEEE International Symposium on Information Theory - Proceedings
21578095 (ISSN)
196-200 8006517SWIFT : short-packet wireless information theory
Swedish Research Council (VR) (2016-03293), 2017-01-01 -- 2020-12-31.
Areas of Advance
Information and Communication Technology
Subject Categories
Communication Systems
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/ISIT.2017.8006517