Polar Codes on Compound Channels

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Event details

Date 16.07.2019
Hour 10:1512:15
Speaker Reka Inovan
Location
Category Conferences - Seminars
EDIC candidacy exam
Exam president: Prof. Michael Gastpar
Thesis advisor: Prof. Emre Telatar
Co-examiner: Dr. Nicolas Macris

Abstract
Although  polar  codes  have  been  shown  to  achieve capacity for binary memoryless channel given a complete channel model,  its  performance  under  channel  uncertainties  is  largely not  known.  In  this  proposal,  we  will  discuss  the  theoretical framework  for  channel  coding  under  some  form  of  channel uncertainties  and  how  polar  codes  fit  into  this  framework.  The first  paper  [1]  will  discuss  one  of  the  framework  for  derivingachievability  results  on  this  problem.  The  second  paper  [2]  will provide  a  counter-example  to  the  long-standing  converse  result,hence  leaving  the  question  of  converse  as  once  again  an  open question.  The  third  paper  [3]  will  discuss  a  method  to  boundthe  compound  capacity  of  polar  codes.  Finally,  we  will  present several  future  research  direction  which  will  extend  the  method given  in  [3]  to  obtain  a  stronger  bound.

Background papers
Channel capacity for a given decoding metric, by I. Csiszar and P. Narayan, 1995.
A Counter-Example to the Mismatched Decoding Converse for Binary-Input Discrete Memoryless Channels, by - J. Scarlett, A. Somekh-Baruch, A. Martinez and A. Guillén i Fàbregas, 2015.
The compound capacity of polar codes, by S. H. Hassani, S. B. Korada and R. Urbanke, 2009.


 

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