Presentation 2017-07-14
Polar Codes Achieving Strong Secrecy for Broadcast Channel with Confidential Messages
Takahiro Fujita, Hideki Yagi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Polar codes, invented by Arikan, achieve the capacity of the discrete memoryless channel with low computational and space complexity. The idea of polar codes has been extended to various coding problems. In this paper, we propose a construction of polar codes for the broadcast channel with confidential messages (BC-CM) where one transmitter sends independent confidential messages to two respective receivers. In particular, we introduce the idea of polar codes by Sasoglu and Vardy that achieve strong secrecy for the degraded wiretap channel into the chaining construction of polar codes by Wei and Ulukus that achieve weak secrecy for BC-CM. We show that proposed polar codes achieve strong secrecy and the best-known achievable rate region.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) broadcast channel / confidential message / polar codes / strong secrecy / achievable rate region
Paper # IT2017-28
Date of Issue 2017-07-06 (IT)

Conference Information
Committee IT
Conference Date 2017/7/13(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Chiba University
Topics (in Japanese) (See Japanese page)
Topics (in English) freshman session, general
Chair Masayoshi Ohashi(Fukuoka Univ.)
Vice Chair Jun Muramatsu(NTT)
Secretary Jun Muramatsu(Yokohama College of Commerce)
Assistant Sigeaki Kuzuoka(wakayama univ.)

Paper Information
Registration To Technical Committee on Information Theory
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Polar Codes Achieving Strong Secrecy for Broadcast Channel with Confidential Messages
Sub Title (in English)
Keyword(1) broadcast channel
Keyword(2) confidential message
Keyword(3) polar codes
Keyword(4) strong secrecy
Keyword(5) achievable rate region
1st Author's Name Takahiro Fujita
1st Author's Affiliation The University of Electro-Communications(UEC)
2nd Author's Name Hideki Yagi
2nd Author's Affiliation The University of Electro-Communications(UEC)
Date 2017-07-14
Paper # IT2017-28
Volume (vol) vol.117
Number (no) IT-120
Page pp.pp.67-72(IT),
#Pages 6
Date of Issue 2017-07-06 (IT)