LDPC Code Design Aspects for Physical-Layer Key Reconciliation
Nazia Islam,Oana Graur,Alexandra Filip,Werner Henkel +3 more
- 01 Dec 2014
- pp 1-7
TL;DR: The main focus of this work lies in designing the code structure through density evolution for a multi-edge-type description in a physical-layer key reconciliation protocol for a reciprocal, flat fading channel between two legitimate users.
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Abstract: In this work, we investigate a physical-layer key reconciliation protocol for a reciprocal, flat fading channel between two legitimate users. We consider the scenario when the n bits of the secret key are measured independently by Alice and Bob without a transmission over the channel. Due to reciprocity, the generated keys are identical except for noise at both ends. We assume Gaussian noise and ignore non-ideal behavior of circuitry and alike. Redundancy information required to reconciliate the key is transmitted from one legitimate user to the other. LDPC codes are employed for the reconciliation procedure. The main focus of this work lies in designing the code structure through density evolution for a multi-edge-type description.
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Citations
Physical Layer Security for Next Generation Wireless Networks: Theories, Technologies, and Challenges
TL;DR: This survey introduces the fundamental theories of PHy-security, covering confidentiality and authentication, and provides an overview on the state-of-the-art works on PHY-security technologies that can provide secure communications in wireless systems, along with the discussions on challenges and their proposed solutions.
700
Vector Quantization and Clustered Key Mapping for Channel-Based Secret Key Generation
TL;DR: A general SKG procedure that utilizes sample and quantizer selection techniques to avoid the so-called cell-boundary problem and a clustered key mapping scheme that assigns each secret key to multiple quantization cells in different clusters is proposed to maintain high conditional key entropy.
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Reciprocity for Physical Layer Security with Wireless FDD and in Wireline Communications
Werner Henkel,Oana Graur,Nazia Islam,Uwe Pagel,Navdeep Manak,Onur Can +5 more
- 01 Dec 2018
TL;DR: It is shown that also Frequency-Division Duplexing yields a usable symmetry of the bidirectional channel measurements, as far as the direction of arrival is concerned.
15
A Secure Communication Scheme Based on Equivalent Interference Channel Assisted by Physical Layer Secret Keys
TL;DR: This work proposes a novel secure communication scheme based on a equivalent interference channel that achieves secure communication with a correlated eavesdropping channel and has a higher upper bound of transmission rate.
Modified decoding algorithm of LDPC codes for physical-layer key reconciliation
Ying-wei Lu,Ze-liang Zheng,Xiao-yun Hou +2 more
- 01 Nov 2017
TL;DR: The modified decoding algorithm of LDPC codes that combine traditional decoding algorithm and Offset-base decoding algorithm is proposed that can reduce the computational complexity efficiently, and improve the efficiency of key reconciliation.
3
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