11 papers
Fluid Antenna Enabled Compact Ultra Massive Antenna Array for Satellite Communications
Tianyu Han, Yongxu Zhu, Gan Zheng +1
Satellites provide seamless coverage and are critical for emergency communications during natural disasters. However, their performance is constrained by limited spectrum and high…
Symbol Detection in Ambient Backscatter Communications Under Residual Time Synchronization Errors
Yinghui Ye, Ying Li, Xiaoli Chu +2
Ambient backscatter communications (AmBC), where a backscatter transmitter (BT) modulates and reflects ambient signals to a backscatter receiver (BR), have been deemed a low-power…
Constrained Higher-Order Binary Optimization for Wireless Communications Systems Using Ising Machines
Gan Zheng, Ioannis Krikidis
This paper develops an algorithmic solution using Ising machines to solve large-scale higher-order binary optimization (HOBO) problems with inequality constraints for resource opti…
1-bit RIS-aided Index Modulation with Quantum Annealing
Ioannis Krikidis, Constantinos Psomas, Gan Zheng
In this paper, we investigate a new index modulation (IM) scheme for reconfigurable intelligent surface (RIS)-assisted communications with 1-bit RIS phase resolution. In addition t…
Dynamic Spectrum Access for Ambient Backscatter Communication-assisted D2D Systems with Quantum Reinforcement Learning
Nguyen Van Huynh, Bolun Zhang, Dinh-Hieu Tran +5
Spectrum access is an essential problem in device-to-device (D2D) communications. However, with the recent growth in the number of mobile devices, the wireless spectrum is becoming…
Vision Transformer with Adversarial Indicator Token against Adversarial Attacks in Radio Signal Classifications
Lu Zhang, Sangarapillai Lambotharan, Gan Zheng +4
The remarkable success of transformers across various fields such as natural language processing and computer vision has paved the way for their applications in automatic modulatio…