Covert communication using a directly modulated array transmitter

Author

Shi, Hongyu ; Tennant, Alan

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK

fYear

2014

fDate

6-11 April 2014

Firstpage

352

Lastpage

354

Abstract

A Direct Antenna Modulation (DAM) scheme is configured on a 2-element array with 2-bit phase control. Such a transmitter is shown to generate constellations with two different orders simultaneously towards different transmitting angles. A possible covert communication scenario is presented in which a constellation with 16 desired signals can be generated at the intended direction, while at a second direction one with reduced number of distinct signal points is purposely generated to prevent accurate demodulation by eavesdropper. In addition, system can be configured to actively lead low-level constellation towards up to two independent pre-known eavesdropping angles.

Keywords

antenna arrays; modulation; radio transmitters; telecommunication security; 2-bit phase control; 2-element array; DAM scheme; covert communication; demodulation; direct antenna modulation; directly modulated array transmitter; eavesdropper; eavesdropping angles; low-level constellation; Antenna arrays; Arrays; Constellation diagram; Transmitting antennas; Direct Antenna Modulation (DAM); constellation; phased array;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2014 8th European Conference on

Conference_Location

The Hague

Type

conf

DOI

10.1109/EuCAP.2014.6901764

Filename

6901764