Secure information sharing with mirroring null steering through untrusted relay with two antennas

Tetsuya Noguchi, Osamu Takyu, Takeo Fujii, Tomoaki Ohtsuki, Fumihito Sasamori, Shiro Handa

研究成果: Conference contribution

4 被引用数 (Scopus)


This paper proposes the novel secure information sharing among wireless nodes by the physical layer security based on multi-antenna null steering. For secure wireless communication, the secure information like the common key of cypher should be shared among nodes before data transmission. However, in wireless adhoc network, the untrusted relay node may steal the data under relay process. In the proposed sharing, a source node and two sink nodes send the information conveying signal and the artificial noises to relay station, simultaneously for avoiding decoding the information in the untrusted relay. After amplifying and forwarding relay, the two nodes do not decode the information from the received signal without removing artificial noises. The untrusted relay constructs the null steering with two antennas for removing the artificial noise. Since the channel transfer functions through which the two artificial noises are passed are common, the null points to two sink nodes can be constructed. As a result, the two nodes can remove the artificial noises. This null steering is mirroring null steering. The computer simulation shows the effect of proposed information sharing in terms of secure capacity.

ホスト出版物のタイトルRWS 2018 - Proceedings
ホスト出版物のサブタイトル2018 IEEE Radio and Wireless Symposium
出版社IEEE Computer Society
出版ステータスPublished - 2018 2 28
イベント2018 IEEE Radio and Wireless Symposium, RWS 2018 - Anaheim, United States
継続期間: 2018 1 142018 1 17


名前IEEE Radio and Wireless Symposium, RWS


Other2018 IEEE Radio and Wireless Symposium, RWS 2018
国/地域United States

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 通信


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