Pulse Sequence Optimization for Harmonic-Diversity Exploitation of Time-Modulated Arrays in Cognitive Radio Applications

Abstract : In this paper, an unconventional time-modulated array (TMA) having its elements controlled by variable gains amplifiers (VGAs) is used as a receiver in a multi-point-to-point communications scenario. Taking advantage from its intrinsic multi-beam radiation features, the TMA is exploited to receive multiple narrowband signals through independent channels. An evolutionary algorithm is employed to define the parameters of the sum-of-weighted-cosine (SWC) pulse sequences aimed at properly shaping the multiple beams while maximizing the signal-to-interference-plus-noise ratio (SINR) at the receiver. A preliminary comparative assessment with classical TMAs using radio-frequency (RF) switches is presented in order to show the potentialities of the proposed approach.
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https://hal.archives-ouvertes.fr/hal-02004213
Contributor : Andrea Massa <>
Submitted on : Friday, February 1, 2019 - 4:04:06 PM
Last modification on : Monday, February 4, 2019 - 9:14:06 AM

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  • HAL Id : hal-02004213, version 1

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Lorenzo Poli, Paolo Rocca, Andrea Massa. Pulse Sequence Optimization for Harmonic-Diversity Exploitation of Time-Modulated Arrays in Cognitive Radio Applications. 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Jul 2018, Boston, United States. pp.2215-2216. ⟨hal-02004213⟩

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