the ultimate rate at which information can be transmitted over a

communication channel with an error probability that will vanish if we

allow the blocklength to get infinitely large. While this result is of

tremendous theoretical importance, the reality of practical systems

looks quite different: no communication system will tolerate an

infinite delay caused by an extremely large blocklength. On the other

hand, it is not necessary to have an error probability that is exactly

zero either, a small, but finite value will suffice.

Therefore, the question arises what can be done in a practical

scheme. In particular, what is the maximal rate at which information

can be transmitted over a communication channel for a given fixed

maximum blocklength (i.e., a fixed maximum delay) if we allow a

certain maximal probability of error? In this project, we have started

to study these questions.

blocklengths, good codes, probability of error.

-||- _|_ _|_ / __|__ Stefan M. Moser

[-] --__|__ /__\ /__ Senior Researcher & Lecturer, ETH Zurich, Switzerland

_|_ -- --|- _ / / Adj. Professor, National Chiao Tung University (NCTU), Taiwan

/ \ [] \| |_| / \/ Web: http://moser-isi.ethz.ch/

Last modified: Sat Jun 6 22:42:04 UTC+8 2009