1,246 research outputs found
Lossy Compression with Near-uniform Encoder Outputs
It is well known that lossless compression of a discrete memoryless source
with near-uniform encoder output is possible at a rate above its entropy if and
only if the encoder is randomized. This work focuses on deriving conditions for
near-uniform encoder output(s) in the Wyner-Ziv and the distributed lossy
compression problems. We show that in the Wyner-Ziv problem, near-uniform
encoder output and operation close to the WZ-rate limit is simultaneously
possible, whereas in the distributed lossy compression problem, jointly
near-uniform outputs is achievable in the interior of the distributed lossy
compression rate region if the sources share non-trivial G\'{a}cs-K\"{o}rner
common information.Comment: Submitted to the 2016 IEEE International Symposium on Information
Theory (11 Pages, 3 Figures
Strong Coordination with Polar Codes
In this paper, we design explicit codes for strong coordination in two-node
networks. Specifically, we consider a two-node network in which the action
imposed by nature is binary and uniform, and the action to coordinate is
obtained via a symmetric discrete memoryless channel. By observing that polar
codes are useful for channel resolvability over binary symmetric channels, we
prove that nested polar codes achieve a subset of the strong coordination
capacity region, and therefore provide a constructive and low complexity
solution for strong coordination.Comment: 7 pages doublespaced, presented at the 50th Annual Allerton
Conference on Communication, Control and Computing 201
- …