Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.11755 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913697751891968 |
|---|---|
| author | Fukada, Hiroki Iimori, Hiroki Pradhan, Chandan Malomsoky, Szabolcs Ishikawa, Naoki |
| author_facet | Fukada, Hiroki Iimori, Hiroki Pradhan, Chandan Malomsoky, Szabolcs Ishikawa, Naoki |
| contents | We propose a new covert communication scheme that operates without pre-sharing side information and channel estimation, utilizing a Gaussian-distributed Grassmann constellation for noncoherent detection. By designing constant-amplitude symbols on the Grassmann manifold and multiplying them by random variables, we generate signals that follow an arbitrary probability distribution, such as Gaussian or skew-normal distributions. The mathematical property of the manifold enables the transmitter's random variables to remain unshared with the receiver, and the elimination of pilot symbols that could compromise covertness. The proposed scheme achieved higher covertness and achievable rates compared to conventional coherent Gaussian signaling schemes, without any penalty in terms of complexity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_11755 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Covert Communications Without Pre-Sharing of Side Information and Channel Estimation Over Quasi-Static Fading Channels Fukada, Hiroki Iimori, Hiroki Pradhan, Chandan Malomsoky, Szabolcs Ishikawa, Naoki Signal Processing We propose a new covert communication scheme that operates without pre-sharing side information and channel estimation, utilizing a Gaussian-distributed Grassmann constellation for noncoherent detection. By designing constant-amplitude symbols on the Grassmann manifold and multiplying them by random variables, we generate signals that follow an arbitrary probability distribution, such as Gaussian or skew-normal distributions. The mathematical property of the manifold enables the transmitter's random variables to remain unshared with the receiver, and the elimination of pilot symbols that could compromise covertness. The proposed scheme achieved higher covertness and achievable rates compared to conventional coherent Gaussian signaling schemes, without any penalty in terms of complexity. |
| title | Covert Communications Without Pre-Sharing of Side Information and Channel Estimation Over Quasi-Static Fading Channels |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2409.11755 |