Time-modulated OFDM Directional Modulation Transmitters

Yuan Ding; Vincent Fusco; Junqing Zhang; Wenqin Wang

doi:10.1109/TVT.2019.2924543

Time-modulated OFDM Directional Modulation Transmitters

Yuan Ding, Vincent Fusco, Junqing Zhang, Wenqin Wang

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

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Abstract

In this paper, directional modulation (DM) transmitters, designed for orthogonal frequency-division multiplexing (OFDM) wireless data transfer are proposed using time-modulated arrays. It is shown that by properly designing the switch controlling time sequences the proposed time-modulated OFDM DM systems exhibit promising features, such as 1) requires only one radio frequency chain, 2) the conventional efficient OFDM signal construction approach, i.e., by using inverse fast Fourier transform modules, can be adopted, 3) it is “DM synthesis-free,” meaning that there is no need to resynthesize the array excitation vectors for different secure communication directions, different modulation schemes, and different DM power efficiencies, and 4) the tradeoff between secrecy performance and power efficiency can be flexibly adjusted.

Original language	English
Pages (from-to)	8249-8253
Number of pages	5
Journal	IEEE Transactions on Vehicular Technology
Volume	68
Issue number	8
Early online date	24 Jun 2019
DOIs	https://doi.org/10.1109/TVT.2019.2924543
Publication status	Published - Aug 2019

Keywords

Directional Modulation

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abstract = "In this paper, directional modulation (DM) transmitters, designed for orthogonal frequency-division multiplexing (OFDM) wireless data transfer are proposed using time-modulated arrays. It is shown that by properly designing the switch controlling time sequences the proposed time-modulated OFDM DM systems exhibit promising features, such as 1) requires only one radio frequency chain, 2) the conventional efficient OFDM signal construction approach, i.e., by using inverse fast Fourier transform modules, can be adopted, 3) it is “DM synthesis-free,” meaning that there is no need to resynthesize the array excitation vectors for different secure communication directions, different modulation schemes, and different DM power efficiencies, and 4) the tradeoff between secrecy performance and power efficiency can be flexibly adjusted.",

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AB - In this paper, directional modulation (DM) transmitters, designed for orthogonal frequency-division multiplexing (OFDM) wireless data transfer are proposed using time-modulated arrays. It is shown that by properly designing the switch controlling time sequences the proposed time-modulated OFDM DM systems exhibit promising features, such as 1) requires only one radio frequency chain, 2) the conventional efficient OFDM signal construction approach, i.e., by using inverse fast Fourier transform modules, can be adopted, 3) it is “DM synthesis-free,” meaning that there is no need to resynthesize the array excitation vectors for different secure communication directions, different modulation schemes, and different DM power efficiencies, and 4) the tradeoff between secrecy performance and power efficiency can be flexibly adjusted.

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JO - IEEE Transactions on Vehicular Technology

JF - IEEE Transactions on Vehicular Technology

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Time-modulated OFDM Directional Modulation Transmitters

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Keywords

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