---- dataentry seminar ----
date_dt : 2007-06-04
title : LT codes over Piecewise Stationary Channels
speaker : Bertrand Ndzana Ndzana
affiliation :  Algo - EPFL
time : 16h15-17h15
room : BC129
table : seminars
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template:datatemplates:seminar
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==== abstract ====
Many communication channels models explicitly allow for sudden changes in the
 channel state during a transmission period. An abruptly changing channel model 
may be used to describe any system that experiences sudden, and persistent, burs
t of interference or degradation, such as a mobile wireless channel, an optical 
CDMA channel, or a military communication channel in the presence of jamming. In
 this talk, we present three LT codes based algorithms for estimation and increm
ental decoding over piecewise memoryless stationary channels (PSMC) with a bound
ed number of abrupt changes in channel statistics. In particular, as a class of 
PSMC, we consider binary symmetric channels with a crossover probability that ch
anges a bounded number of times with no repetitions in the statistics.