Retrodirective Assisted Secure Wireless Key Establishment

Yuan Ding, Junqing Zhang, Vincent Fusco

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)
498 Downloads (Pure)


In this paper a new type of architecture for secure wireless key establishment is proposed. A retrodirective array (RDA) that is configured to receive and re-transmit at different frequencies is utilized as a relay node. The RDA is able to respond in ‘real-time’, reducing the required number of time slots to two. More importantly, in this architecture equivalent reciprocal wireless channels between legitimate keying nodes can be randomly updated within one channel coherence time period, leading to greatly increased key generation rates (KGRs) in slow fading environment. The secrecy performance of this RDA assisted key generation system is evaluated under several eavesdropping strategies and it is shown that it outperforms previous relay key generation systems.
Original languageEnglish
Pages (from-to)320-334
Number of pages15
JournalIEEE Transactions on Communications
Issue number1
Early online date11 Oct 2016
Publication statusPublished - 01 Jan 2017


  • Secure Wireless Communications


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