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A new frequency hopping-aided secure communication in the presence of an adversary jammer and an untrusted relay

Letafati, M ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/ICCWorkshops49005.2020.9145441
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. The Internet-of-Things (IoT) spans various applications in healthcare filed, from smart wearable or implantable sensors to remote monitoring of elderly, and medical device networking. In this paper, a jamming-resistant scheme for the healthcare IoT is proposed to provide secure and reliable data transmission in a two-hop cooperative network, where a source communicates with a destination in the presence of an untrusted relay and an active adversary. The untrusted relay is an authorized necessary helper who may wiretap the confidential information, e.g., the secret measured data of a patient, while the jammer is an external attacker who tries to interrupt the communication. Different from traditional frequency hopping spread spectrum (FHSS) techniques that require a pre-determined pattern between communicating nodes, in our proposed scheme, the source an destination enjoy the local observations of the two-hop channel exploited as the source of common randomness to generate shared secret keys, which facilitates secure communication. To obtain the shared FHSS sequence, a three-phase key generation scheme with minimum mean square error (MMSE) channel estimators is implemented. For the proposed FHSS-based scheme, we derive new closed-form expressions for characterizing the achievable secret key rate (SKR) to highlight the efficiency of our proposed scheme compared to the state-of-the-arts. Finally, several numerical examples and discussions are presented to gain engineering insights behind the studied communication scenario. © 2020 IEEE
  6. Keywords:
  7. Jamming-resiliency ; Physical layer security ; Secret key generation ; Health care ; Jamming ; Mean square error ; Secure communication ; Spread spectrum communication ; Closed-form expression ; Confidential information ; Cooperative networks ; Frequency hopping spread spectrum ; Implantable sensors ; Internet of thing (IOT) ; Minimum mean square errors (MMSE) ; Reliable data transmission ; Frequency hopping
  8. Source: 2020 IEEE International Conference on Communications Workshops, ICC Workshops 2020, 7 June 2020 through 11 June 2020 ; July , 2020
  9. URL: https://ieeexplore.ieee.org/document/9145441