NDLI: A MIMO Precoding Based Physical Layer Security Technique for Key Exchange Encryption

Content Provider	IEEE Xplore Digital Library
Author	Taha, H. Alsusa, E.
Copyright Year	2015
Description	Author affiliation: Microwave & Commun. Syst. (MACS) Group, Univ. of Manchester, Manchester, UK (Taha, H.; Alsusa, E.)
Abstract	Secret key establishment is considered to be one of the main challenging issues in cryptography. Many security algorithms are implemented in practice using complicated mathematical methods to exchange secret keys, but those methods are not desirable in power limited terminals such as cellular and sensor networks. In this paper, we propose a physical layer method for exchanging secret key bits in precoding based multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. The proposed method uniquely relates the key bits to the indices of the precoding matrix used for MIMO channel precoding. The basic idea of the technique is to utilize a MIMO-OFDM precoding codebook. Comparative analysis with respect to the average number of mismatch bits, named key error rate (KER), shows an interesting lead for the new method relative to existing work. In addition, it will be shown that the proposed technique requires lower computation per byte per secret key.
Starting Page	1
Ending Page	5
File Size	298550
Page Count	5
File Format	PDF
ISBN	9781479980888
DOI	10.1109/VTCSpring.2015.7145622
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-11
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Receivers Indexes Wireless communication Transmitters Security OFDM
Content Type	Text
Resource Type	Article

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