A physical transmission security layer for wireless multiple access communication systems

Gill R. Tsouri, Dov Wulich

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A method for securing wireless multiple access channels is proposed. The method is based on the dispersive nature of wireless channels. Specifically, on the fact the channels from distributed nodes in space to a receiver are unique to the receivers' point in space and change over time. Each node estimates the channel between itself and the receiver. It then transmits a compensated signal yielding a robust joint constellation at the receivers' point in space. The receiver decodes and separates all nodes at once from the joint constellation. An eavesdropper, placed at least a few wavelengths aside the receiver, experiences a different and unknown channel. It is shown that this impairs his decoding ability for various reasons. The method requires no extra decoding complexity at the receiver, and allows the sources to transmit independently of one another. It is applicable to systems with linear modulation and flat fading channels.

Original languageEnglish
Title of host publication15th European Signal Processing Conference, EUSIPCO 2007 - Proceedings
Pages688-692
Number of pages5
StatePublished - 1 Dec 2007
Event15th European Signal Processing Conference, EUSIPCO 2007 - Poznan, Poland
Duration: 3 Sep 20077 Sep 2007

Publication series

NameEuropean Signal Processing Conference
ISSN (Print)2219-5491

Conference

Conference15th European Signal Processing Conference, EUSIPCO 2007
Country/TerritoryPoland
CityPoznan
Period3/09/077/09/07

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