Presentation 2021-01-21
A Study on Secret Key Agreement Scheme by Vector Quantization of Correlated MIMO Channel Matrix
Tomoyuki Higashide, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In the wireless communication, secret key agreement schemes on physical layer attracts attentions for protecting communications from eavesdropping. Most of secret key agreement schemes generate keys by scalar quantization. However, secret keys generated by scalar quantization occur key disagreement in higher probability than these by vector quantization. A general quantizer selection scheme selects a quantizer with minimum key disagreement between two authorized stations. An eaves-dropper is able to generate keys with this quantizer more easily. This paper assumed correlated MIMO channel, and proposed the quantizer utilizing correlation between authorized stations as key information and the quantizer selection scheme taking key entropies leak to eavesdroppers into consideration. This scheme that reduces information leaks to eavesdropper maintaining key disagreement probability between authorized stations.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Secret key agreement scheme / Physical layer security / correlated MIMO / Vector quantization
Paper # IT2020-69,SIP2020-47,RCS2020-160
Date of Issue 2021-01-14 (IT, SIP, RCS)

Conference Information
Committee SIP / IT / RCS
Conference Date 2021/1/21(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Kazunori Hayashi(Kyoto Univ.) / Tadashi Wadayama(Nagoya Inst. of Tech.) / Eiji Okamoto(Nagoya Inst. of Tech.)
Vice Chair Yukihiro Bandou(NTT) / Toshihisa Tanaka(Tokyo Univ. Agri.&Tech.) / Tetsuya Kojima(Tokyo Kosen) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba)
Secretary Yukihiro Bandou(Hosei Univ.) / Toshihisa Tanaka(Waseda Univ.) / Tetsuya Kojima(Yamaguchi Univ.) / Fumiaki Maehara(Saga Univ.) / Toshihiko Nishimura(Kyushu Univ.) / Tomoya Tandai(NEC)
Assistant Yuichi Tanaka(Tokyo Univ. Agri.&Tech.) / Takahiro Ohta(Senshu Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO)

Paper Information
Registration To Technical Committee on Signal Processing / Technical Committee on Information Theory / Technical Committee on Radio Communication Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study on Secret Key Agreement Scheme by Vector Quantization of Correlated MIMO Channel Matrix
Sub Title (in English)
Keyword(1) Secret key agreement scheme
Keyword(2) Physical layer security
Keyword(3) correlated MIMO
Keyword(4) Vector quantization
1st Author's Name Tomoyuki Higashide
1st Author's Affiliation Doushisha University(Doushisha Univ.)
2nd Author's Name Shinsuke Ibi
2nd Author's Affiliation Doushisha University(Doushisha Univ.)
3rd Author's Name Takumi Takahashi
3rd Author's Affiliation Osaka University(Osaka Univ.)
4th Author's Name Hisato Iwai
4th Author's Affiliation Doushisha University(Doushisha Univ.)
Date 2021-01-21
Paper # IT2020-69,SIP2020-47,RCS2020-160
Volume (vol) vol.120
Number (no) IT-320,SIP-321,RCS-322
Page pp.pp.34-39(IT), pp.34-39(SIP), pp.34-39(RCS),
#Pages 6
Date of Issue 2021-01-14 (IT, SIP, RCS)