TY - GEN
T1 - Polarization and randomness extraction
AU - Abbe, Emmanuel
PY - 2011
Y1 - 2011
N2 - This paper explores a connection between randomness extraction and channel (source) coding problems. It is explained how efficient extractors can be used to define efficient coding schemes and reciprocally, a new deterministic extractor based on a polar coding scheme is proposed. Since the source model used in extractors for computer science (cryptography) do not assume i.i.d. or known distributions, a generalized polarization phenomenon for sources with block memory and unknown distributions is developed. It is shown that in this setting, the min-entropy (as usual in extractors) rather than Shannon entropy can be efficiently extracted. The derived polar coding results also apply to compound channels with memory.
AB - This paper explores a connection between randomness extraction and channel (source) coding problems. It is explained how efficient extractors can be used to define efficient coding schemes and reciprocally, a new deterministic extractor based on a polar coding scheme is proposed. Since the source model used in extractors for computer science (cryptography) do not assume i.i.d. or known distributions, a generalized polarization phenomenon for sources with block memory and unknown distributions is developed. It is shown that in this setting, the min-entropy (as usual in extractors) rather than Shannon entropy can be efficiently extracted. The derived polar coding results also apply to compound channels with memory.
UR - http://www.scopus.com/inward/record.url?scp=80054808786&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80054808786&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2011.6033870
DO - 10.1109/ISIT.2011.6033870
M3 - Conference contribution
AN - SCOPUS:80054808786
SN - 9781457705953
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 184
EP - 188
BT - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
T2 - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
Y2 - 31 July 2011 through 5 August 2011
ER -