13 research outputs found
Tight Bounds for Symmetric Divergence Measures and a New Inequality Relating -Divergences
Tight bounds for several symmetric divergence measures are introduced, given
in terms of the total variation distance. Each of these bounds is attained by a
pair of 2 or 3-element probability distributions. An application of these
bounds for lossless source coding is provided, refining and improving a certain
bound by Csisz\'ar. A new inequality relating -divergences is derived, and
its use is exemplified. The last section of this conference paper is not
included in the recent journal paper that was published in the February 2015
issue of the IEEE Trans. on Information Theory (see arXiv:1403.7164), as well
as some new paragraphs throughout the paper which are linked to new references.Comment: A final version of the conference paper at the 2015 IEEE Information
Theory Workshop, Jerusalem, Israe
A Survey on Modulation Techniques in Molecular Communication via Diffusion
This survey paper focuses on modulation aspects of molecular communication,
an emerging field focused on building biologically-inspired systems that embed
data within chemical signals. The primary challenges in designing these systems
are how to encode and modulate information onto chemical signals, and how to
design a receiver that can detect and decode the information from the corrupted
chemical signal observed at the destination. In this paper, we focus on
modulation design for molecular communication via diffusion systems. In these
systems, chemical signals are transported using diffusion, possibly assisted by
flow, from the transmitter to the receiver. This tutorial presents recent
advancements in modulation and demodulation schemes for molecular communication
via diffusion. We compare five different modulation types: concentration-based,
type-based, timing-based, spatial, and higher-order modulation techniques. The
end-to-end system designs for each modulation scheme are presented. In
addition, the key metrics used in the literature to evaluate the performance of
these techniques are also presented. Finally, we provide a numerical bit error
rate comparison of prominent modulation techniques using analytical models. We
close the tutorial with a discussion of key open issues and future research
directions for design of molecular communication via diffusion systems.Comment: Preprint of the accepted manuscript for publication in IEEE Surveys
and Tutorial