Experiment of Digital Directional Modulation Transmitters

Yuan Ding, Vincent Fusco

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Abstract

A digital directional modulation (DM) transmitter structure is proposed from a practical implementation point of view in this paper. This digital DM architecture is built with the help of several off-the-shelf physical layer wireless experiment platform hardware boards. When compared with previous analogue DM transmitter architectures, the digital means offers more precise and fast control on the updates of the array excitations. More importantly, it is an ideal physical arrangement to implement the most universal DM synthesis algorithm, i.e., the orthogonal vector approach. The practical issues in digital DM system calibrations are described and solved. The bit error rates (BERs) are measured via real-time data transmissions to illustrate the DM advantages, in terms of secrecy performance, over conventional non-DM beam-steering transmitters.
Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalForum for Electromagnetic Research Methods and Application Technologies
Volume11
Publication statusPublished - 2015

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