A Practical Spectrum Sharing Scheme for Cognitive Radio Networks: Design and Experiments
Pedram Kheirkhah Sangdeh, Hossein Pirayesh, Adnan Quadri, Huacheng, Zeng

TL;DR
This paper presents a practical MIMO-based spectrum sharing scheme for cognitive radio networks, demonstrating effective interference cancellation and coexistence with Wi-Fi devices through prototype experiments.
Contribution
It introduces a novel spectrum sharing scheme using blind beamforming and interference cancellation, validated by real-world prototype experiments.
Findings
Achieves 25dB interference cancellation with two antennas
Achieves 33dB interference cancellation with three antennas
Demonstrates coexistence with commercial Wi-Fi devices
Abstract
Spectrum shortage is a fundamental problem in wireless networks and this problem becomes increasingly acute with the rapid proliferation of wireless devices. To address this problem, spectrum sharing in the context of cognitive radio networks (CRNs) has been considered a promising solution. In this paper, we propose a practical spectrum sharing scheme for a small CRN that comprises a pair of primary users and a pair of secondary users by leveraging the multiple-input and multiple-output (MIMO) technology. In our scheme, we assume that the secondary users take full responsibility for cross-network interference cancellation (IC). We also assume that the secondary users have no knowledge about the primary network, including its signal waveform, frame structure, and network protocol. The key components of our proposed scheme are two MIMO-based interference management techniques: blind…
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Taxonomy
TopicsCognitive Radio Networks and Spectrum Sensing · Advanced MIMO Systems Optimization · Full-Duplex Wireless Communications
