2020 IEEE International Symposium
on Information Theory
21-26 June 2020 • Los Angeles, California, USA
| Paper ID | S.12.4 | ||
| Paper Title | Second-Order Achievable Rates for a Block Fading Gaussian Multiple Access Channel | ||
| Authors | Deekshith P K, Vinod Sharma, Indian Institute of Science, India | ||
| Session | S.12: Second-order Analysis | ||
| Presentation | Lecture | ||
| Track | Shannon Theory | ||
| Manuscript | Click here to download the manuscript | ||
| Virtual Presentation | Click here to watch in the Virtual Symposium | ||
| Abstract | In this work, we consider a Gaussian multiple access channel (GMAC) subject to block fading that is independent across users. We derive inner bounds on the capacity region for a given finite codeword length and non-vanishing average probability of error. We assume perfect channel state information (CSI) at the receiver (CSIR) and no CSI at the transmitters. The bounds are derived subject to a peak power constraint on the transmitted codewords. Our inner bounds are derived using Gaussian codebooks. These bounds characterize deviation from the ergodic capacity region upto second-order. Using numerical examples, we illustrate the back-off from the boundary of the ergodic capacity region. | ||
Plan Ahead
2021 IEEE International Symposium on Information Theory
11-16 July 2021 | Melbourne, Victoria, Australia
