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Pinching-Antenna System (PASS)-enabled Multicast Communications
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Pinching-antenna system (PASS) is a novel flexible-antenna technology, which employs long-spread waveguides to convey signals with negligible path loss and pinching antennas (PAs) with adjustable positions to radiate signals from the waveguide into the free space. Therefore, short-distance and strong line-of-sight transmission can be established. In this paper, a novel PASS-enabled multicast communication framework is proposed, where multiple PAs on a single waveguide radiate the broadcast signals to multiple users. The multicast performance maximization problem is formulated to optimize the positions of all PAs. To address this non-convex problem, a particle swarm optimization-based algorithm is developed. Numerical results show that PASS can significantly outperform the conventional multiple-antenna transmission.
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Cited by 1 Pith paper
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Resource Allocation for Pinching-Antenna Systems: State-of-the-Art, Key Techniques and Open Issues
A comprehensive survey of resource allocation for pinching-antenna systems, with numerical case studies illustrating gains over fixed-antenna baselines.
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