期刊
IEEE COMMUNICATIONS LETTERS
卷 25, 期 1, 页码 59-63出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2020.3025262
关键词
Physical layer security; key generation; OFDM
资金
- TUBITAK [119E392]
Novel algorithms for secret key generation from the wireless channel in multi-carrier systems are proposed to ensure confidentiality and authentication in wireless communication systems. The proposed algorithms generate random secret bits not only from the magnitudes of OFDM subchannels, but also from the indices/positions of the subchannels corresponding to highest gains. These algorithms enhance overall key rates by providing additional dimensions for secret key generation.
In this letter, novel algorithms for secret key generation from the wireless channel in multi-carrier systems are proposed for ensuring the confidentiality and authentication in wireless communication systems. The novelty of the proposed algorithms lies in the generation of random secret bits not just from the magnitudes of orthogonal frequency division multiplexing (OFDM) subchannels as it has conventionally been done in the literature, but also from the indices/positions of the subchannels corresponding to highest gains. Thus, the proposed algorithms provide additional dimensions for enhancing overall key rates. The efficiency of the proposed algorithms is evaluated in terms of key mismatch rate (KMR) and key generation rate (KGR). Simulation results showed that the proposed algorithms can enhance the overall performance of physical layer key-based algorithms by providing extra dimensions for secret key generation.
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