1 - 6 of 6 Chapters
[This chapter provides a brief introduction of security issues that may arise in wireless communication systems and describe physical layer techniques that can be used to address these issues. Different notions of physical layer secrecy are introduced, including keyless transmission of...
[This chapter provides a brief overview of information-theoretic physical layer secrecy, including the fundamental limits and the key aspects that may affect the secrecy performance. The measure of secrecy as well as the notions of secrecy capacity and secrecy outage probability are introduced....
[This chapter reviews various secrecy-enhancing signal processing techniques for data transmission in multi-antenna wireless systems. In particular, secrecy beamforming and precoding schemes are introduced as effective schemes to exploit the spatial degrees of freedom in multiple-input...
[This chapter describes the use of the secrecy beamforming and precoding techniques in multiantenna wireless relay systems. Here, the multiple antennas at the relays may provide additional spatial degrees of freedom that can be further utilized to enhance secrecy. However, the extra...
[This chapter provides an overview of the so-called discriminatory channel estimation (DCE) scheme, that is, a training and channel estimation scheme utilized to enhance physical layer secrecy in the channel estimation phase. Instead of focusing on the data transmission, as done in most works...
[This chapter provides a brief survey of recent developments and applications of physical-layer secrecy techniques in modern wireless systems, such as cognitive radios, orthogonal frequency-division multiplexing (OFDM) systems, wireless ad hoc and multihop networks, and cellular networks. Some...
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