| Title | Secure Communication Based on Reliability-Based Hybrid ARQ and LDPC Codes |
| Publication Type | Conference Paper |
| Year of Publication | 2020 |
| Authors | Wang, L., Guo, D. |
| Conference Name | 2020 Prognostics and Health Management Conference (PHM-Besançon) |
| Date Published | may |
| Keywords | additive white gaussian noise channel, additive white Gaussian noise wire-tap channel, Automatic repeat request, AWGN channels, bit-error rate, channel coding, communication system, composability, Decoding, error statistics, Gaussian approximation, hybrid ARQ, irregular LDPC codes, low-density parity-check codes, low-density parity-check codes., Metrics, network coding, parity check codes, physical-layer security, posteriori probability log-likelihood ratios, probability, pubcrawl, RB-HARQ protocol, re-transmission strategy, re-transmissions, reliability-based hybrid ARQ, reliability-based hybrid automatic repeat-request, resilience, Resiliency, secure communication, security performance, telecommunication network reliability, telecommunication security, unreliable bits, variable nodes |
| Abstract | This paper designs a re-transmission strategy to intensify the security of communication over the additive white Gaussian noise (AWGN) wire-tap channel. In this scheme, irregular low-density parity-check (LDPC) codes work with reliability-based hybrid automatic repeat-request (RB-HARQ). For irregular LDPC codes, the variable nodes have different degrees, which means miscellaneous protection for the nodes. In RB-HARQ protocol, the legitimate receiver calls for re-transmissions including the most unreliable bits at decoder's outputting. The bits' reliability can be evaluated by the average magnitude of a posteriori probability log-likelihood ratios (APP LLRs). Specifically, this scheme utilizes the bit-error rate (BER) to assess the secrecy performance. Besides, the paper gives close analyses of BER through theoretical arguments and simulations. Results of numerical example demonstrate that RB-HARQ protocol with irregular LDPC codes can hugely reinforce the security performance of the communication system. |
| DOI | 10.1109/PHM-Besancon49106.2020.00059 |
| Citation Key | wang_secure_2020 |
Secure Communication Based on Reliability-Based Hybrid ARQ and LDPC Codes