Poster: Secret key generation from CFR for OFDM TDD systems over fading channels

2014 ◽  
Author(s):  
Yuexing Peng ◽  
George C. Alexandropoulos ◽  
Peng Wang ◽  
Yonghui Li ◽  
Dac-Binh Ha
Keyword(s):  
Fading Channels ◽  
Key Generation ◽  
Secret Key ◽  
Secret Key Generation

scholarly journals Average Contiguous Duration – A Novel Metric for Characterizing Wireless Fading Channels

2021 ◽  
Author(s):  
Junaid Nawaz Syed ◽  
Muhammad Adil ◽  
Shurjeel Wyne
Keyword(s):  
Fading Channels ◽  
Physical Layer Security ◽  
Practical Significance ◽  
Key Generation ◽  
Channel Fading ◽  
Secret Key ◽  
Time Duration ◽  
Secret Key Generation ◽  
Uniform Quantization ◽  
Special Case

Abstract – We define the average contiguous duration (ACD) of the received fading signal as the average time duration during which the signal envelope contiguously remains within a bounded amplitude interval. Also, the multi-interval ACD or K-ACD function is defined as the set of ACD values for K non-overlapping amplitude-intervals whose union spans the received envelope's amplitude range. We derive closed-form expressions of the ACD for Rayleigh, Rice, and Nakagami-m fading signals, which are widely analyzed in the literature. The derived expressions hold practical significance for several signal processing applications such as non-uniform quantization of channel samples for secret key generation (SKG) in physical layer security (PLS) techniques. The well-known channel fading metric of average fade duration (AFD) is shown as a special case of the proposed ACD metric and the proposed theoretical analysis is validated by simulations.

scholarly journals Average Contiguous Duration – A Novel Metric for Characterizing Wireless Fading Channels

2021 ◽  
Author(s):  
Junaid Nawaz Syed ◽  
Muhammad Adil ◽  
Shurjeel Wyne
Keyword(s):  
Fading Channels ◽  
Physical Layer Security ◽  
Practical Significance ◽  
Key Generation ◽  
Channel Fading ◽  
Secret Key ◽  
Time Duration ◽  
Secret Key Generation ◽  
Uniform Quantization ◽  
Special Case

Abstract – We define the average contiguous duration (ACD) of the received fading signal as the average time duration during which the signal envelope contiguously remains within a bounded amplitude interval. Also, the multi-interval ACD or K-ACD function is defined as the set of ACD values for K non-overlapping amplitude-intervals whose union spans the received envelope's amplitude range. We derive closed-form expressions of the ACD for Rayleigh, Rice, and Nakagami-m fading signals, which are widely analyzed in the literature. The derived expressions hold practical significance for several signal processing applications such as non-uniform quantization of channel samples for secret key generation (SKG) in physical layer security (PLS) techniques. The well-known channel fading metric of average fade duration (AFD) is shown as a special case of the proposed ACD metric and the proposed theoretical analysis is validated by simulations.

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