Abstract
This letter considers a network comprising a transmitter, which employs random linear network coding to encode a message, a legitimate receiver, which can recover the message if it gathers a sufficient number of linearly independent coded packets, and an eavesdropper. Closed-form expressions for the probability of the eavesdropper intercepting enough coded packets to recover the message are derived. Transmission with and without feedback is studied. Furthermore, an optimization model that minimizes the intercept probability under delay and reliability constraints is presented. Results validate the proposed analysis and quantify the secrecy gain offered by a feedback link from the legitimate receiver.
| Original language | English |
|---|---|
| Pages (from-to) | 1762-1765 |
| Number of pages | 4 |
| Journal | IEEE Communications Letters |
| Volume | 19 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 20 Aug 2015 |
| Externally published | Yes |
Bibliographical note
© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Keywords
- Network coding
- Receivers
- Random access memory
- Delays
- Security
- Optimisation
- Reliability