![Electronics | Free Full-Text | Multicarrier Spread Spectrum Modulation Schemes and Efficient FFT Algorithms for Cognitive Radio Systems Electronics | Free Full-Text | Multicarrier Spread Spectrum Modulation Schemes and Efficient FFT Algorithms for Cognitive Radio Systems](https://www.mdpi.com/electronics/electronics-03-00419/article_deploy/html/images/electronics-03-00419-g001.png)
Electronics | Free Full-Text | Multicarrier Spread Spectrum Modulation Schemes and Efficient FFT Algorithms for Cognitive Radio Systems
![A printed millimetre-wave modulator and antenna array for backscatter communications at gigabit data rates | Nature Electronics A printed millimetre-wave modulator and antenna array for backscatter communications at gigabit data rates | Nature Electronics](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41928-021-00588-8/MediaObjects/41928_2021_588_Fig1_HTML.png)
A printed millimetre-wave modulator and antenna array for backscatter communications at gigabit data rates | Nature Electronics
![1: A typical signal model for AM shown in the time domain (left hand... | Download Scientific Diagram 1: A typical signal model for AM shown in the time domain (left hand... | Download Scientific Diagram](https://www.researchgate.net/publication/43244369/figure/fig1/AS:647162601959426@1531306996309/A-typical-signal-model-for-AM-shown-in-the-time-domain-left-hand-panels-and-the.png)