Physical layer security (PLS) has emerged as a new concept and powerful alternative that
can complement and may even replace encryption-based approaches, which entail many …

Authentication is an important issue in wireless communications because the open nature of
the wireless medium provides more security vulnerabilities. Recently, Physical-Layer …

Key generation from the randomness of wireless channels is a promising alternative to
public key cryptography for the establishment of cryptographic keys between any two users …

As an alternative to conventional wireless communication techniques that use amplitude,
frequency, and phase modulations, polarization modulation (PoM) provides an additional …

Physical layer security (PLS) in wireless communication systems has attracted extensive
research attentions in recent years. Unlike cryptography-based methods applied in upper …

We treat the quaternionic Fourier transform (QFT) applied to quaternion fields and
investigate QFT properties useful for applications. Different forms of the QFT lead us to …

The concept of physical layer security builds on the pivotal idea of turning the channel's
imperfections, such as noise and fading, into a source of security. This is established …

We study the first-and second-order asymptotics of covert communication over binary-input
discrete memoryless channels for three different covertness metrics and under maximum …

With the growing use of underwater acoustic communications (UWAC) for both industrial
and military operations, there is a need to ensure communication security. A particular …

Underwater acoustic sensor networks (UASNs) have played a vital role in many security-
sensitive applications like offshore oil exploration, tsunami forecast, and tactical …