Wei, Z;
Masouros, C;
Sun, S;
(2022)
Physical Layer Anonymous Communications: An Anonymity Entropy Oriented Precoding Design (Invited Paper).
In:
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings.
(pp. pp. 9022-9026).
IEEE: Singapore, Singapore.
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Abstract
Different from traditional security-oriented designs, the aim of anonymizing techniques is to mask users' identities during communication, thereby providing users with unidentifiability and unlinkability. The existing anonymizing techniques are only designated at upper layers of networks, ignoring the risk of anonymity leakage at physical layer (PHY). In this paper, we address the PHY anonymity design with focus on a typical uplink scenario where the receiver is equipped with more antennas than the sender. With the increased degrees-of-freedom at the receiver side, we first propose a maximum likelihood estimation (MLE) signal trace-back detector, which only analyzes the signaling pattern of the received signal to disclose the sender's identity. Accordingly, an anonymity entropy anonymous (AEA) precoder is proposed, which manipulates the transmitted signalling pattern to counteract the receiver's trace-back detector and meanwhile to guarantee high receive signal-to-interference-plus-noise ratio for communication. More importantly, more data streams can be multiplexed than the number of transmit antennas, which is particularly suitable for the strong receiver configuration. Simulation demonstrates that the proposed AEA precoder can simultaneously provide high anonymity and communication performance.
| Type: | Proceedings paper |
|---|---|
| Title: | Physical Layer Anonymous Communications: An Anonymity Entropy Oriented Precoding Design (Invited Paper) |
| Event: | ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) |
| Dates: | 23 May 2022 - 27 May 2022 |
| ISBN-13: | 9781665405409 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICASSP43922.2022.9746100 |
| Publisher version: | https://doi.org/10.1109/ICASSP43922.2022.9746100 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Multiplexing, Maximum likelihood estimation, Transmitting antennas, Receiving antennas, Detectors, Interference, Physical layer |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10157874 |
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