Secure index and data symbol modulation for OFDM-IM

Lee, Yonggu, Jo, Hanseong, Ko, Youngwook and Choi, Jinho 2017, Secure index and data symbol modulation for OFDM-IM, IEEE access, vol. 5, pp. 24959-24974, doi: 10.1109/ACCESS.2017.2768540.

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Title Secure index and data symbol modulation for OFDM-IM
Author(s) Lee, Yonggu
Jo, Hanseong
Ko, Youngwook
Choi, JinhoORCID iD for Choi, Jinho
Journal name IEEE access
Volume number 5
Start page 24959
End page 24974
Total pages 16
Publisher Institute of Electrical and Electronics Engineers
Place of publication Piscataway, N.J.
Publication date 2017
ISSN 2169-3536
Keyword(s) Orthogonal frequency division multiplexing
index modulation
data symbol modulation
physical layer security
Science & Technology
Computer Science, Information Systems
Engineering, Electrical & Electronic
Computer Science
Summary In this paper, we propose a secure index and data symbol modulation scheme for orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems. By exploiting the notion of the channel reciprocity in time division duplexing mode over wireless channels for shared channel state information as a secret key, we investigate randomized mapping rules for index modulation as well as data symbol modulation. Due to the randomized mapping rules for index and data symbol modulation in OFDM-IM, an eavesdropper is not able to correctly decide message bits even though active subcarriers and their symbols are correctly estimated. In particular, we exploit a characteristic of OFDM-IM which uses a fraction of subcarriers for transmissions to enhance security of data symbol modulation. In addition, to design a set of mapping rules for data symbol modulation, we investigate both a random-selection-based set and a bit-mismatch-based set. Through the analysis and simulation results, we demonstrate that the proposed scheme based on the randomized mapping rules for index modulation and data symbol modulation has a better performance than an existing scheme (modified for OFDM-IM) in terms of bit error rate (BER) and successful attack probability. In particular, we can show that the BER at an eavesdropper is much higher if the bit-mismatch-based set of mapping rules is used.
Language eng
DOI 10.1109/ACCESS.2017.2768540
Indigenous content off
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2017, IEEE
Free to Read? Yes
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