Joint SVD-GSVD precoding technique and secrecy capacity lower bound for the MIMO relay wire-tap channel

Marouen Jilani, Tomoaki Ohtsuki

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

We consider a problem of secure communications for the communication system consisting of multiple outputs for a source and a relay and multiple inputs for the relay, a destination and an eavesdropper. For the above-mentioned communication system, we establish a lower bound on the secrecy capacity at which secure communications between the source and the destination are attainable. We make use of the singular value decomposition (SVD) and its generalization to decompose the whole system into parallel independent channels. At the source, the generalized singular value decomposition (GSVD) is performed to simultaneously diagonalize the channel matrices of the relay and the destination and independently code across the resulting parallel channels. At the relay, the SVD is performed to beamform the signal towards the destination. The scalar case of what we are considering in this paper has been investigated in previous literature, to prove that the introduction of a fourth party, the relay, in the wire-tap channel facilitates secure wireless communications. Our simulation results are in line with the scalar case's and prove to be successful in achieving secrecy capacity where the conventional model failed, i.e. when no relay is introduced and the eavesdropper's channel incurs as little noise as the legitimate receiver.

本文言語English
ホスト出版物のタイトルIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
DOI
出版ステータスPublished - 2012 8月 20
イベントIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
継続期間: 2012 5月 62012 6月 9

出版物シリーズ

名前IEEE Vehicular Technology Conference
ISSN(印刷版)1550-2252

Other

OtherIEEE 75th Vehicular Technology Conference, VTC Spring 2012
国/地域Japan
CityYokohama
Period12/5/612/6/9

ASJC Scopus subject areas

  • 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
  • 応用数学

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