| Title | Keyed Polar Coding for Physical-Layer Security without Channel State Information |
| Publication Type | Conference Paper |
| Year of Publication | 2021 |
| Authors | Pinto, Thyago M. S., Vilela, João P., Gomes, Marco A. C., Harrison, Willie K. |
| Conference Name | ICC 2021 - IEEE International Conference on Communications |
| Keywords | channel coding, composability, Conferences, Decoding, encoding, Metrics, pubcrawl, Receivers, Redundancy, reliability, Resiliency, security |
| Abstract | Polar codes have been shown to provide an effective mechanism for achieving physical-layer security over various wiretap channels. A majority of these schemes require channel state information (CSI) at the encoder for both intended receivers and eavesdroppers. In this paper, we consider a polar coding scheme for secrecy over a Gaussian wiretap channel when no CSI is available. We show that the availability of a shared keystream between friendly parties allows polar codes to be used for both secure and reliable communications, even when the eavesdropper knows a large fraction of the keystream. The scheme relies on a predetermined strategy for partitioning the bits to be encoded into a set of frozen bits and a set of information bits. The frozen bits are filled with bits from the keystream, and we evaluate the security gap when the cyclic redundancy check-aided successive cancellation list decoder is used at both receivers in the wiretap channel model. |
| DOI | 10.1109/ICC42927.2021.9500357 |
| Citation Key | pinto_keyed_2021 |
Keyed Polar Coding for Physical-Layer Security without Channel State Information