Technical Program

Paper Detail

Paper Title Error Exponents of Parallel Two-way Discrete Memoryless Channels using Variable Length Coding
Paper IdentifierTH3.R8.3
Authors Kenneth Palacio-Baus, Meysam Asadi, Natasha Devroye, University of Illinois at Chicago, United States
Session Coding for Feedback Channels
Location Conseil, Level 5
Session Time Thursday, 11 July, 14:30 - 16:10
Presentation Time Thursday, 11 July, 15:10 - 15:30
Manuscript  Click here to download the manuscript
Abstract Achievable error exponents for two-way parallel discrete memoryless channels (DMC) using variable block length coding (VLC) are presented. First, Forney’s erasure decoding error exponent is shown to be achievable for both directions simultaneously. Next, for some rate-pairs, it is shown that the error exponent of the direction with a smaller capacity may be further increased by allocating feedback resources to it in the other direction, at the price of a decreased error exponent for the other terminal. The presented two-way communication scheme builds upon Draper-Sahai’s one-way DMC achievability scheme with noisy feedback under VLC. Both achievable error exponent regions demonstrate that the use of VLC and interaction between the terminals may benefit both directions’ error exponents over fixed block length and feedback free transmission.