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MIMO Pinching-Antenna-Aided SWIPT

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arxiv 2506.06754 v1 pith:Z3WAXC5U submitted 2025-06-07 cs.IT eess.SPmath.IT

MIMO Pinching-Antenna-Aided SWIPT

classification cs.IT eess.SPmath.IT
keywords informationpasspinchingpositionswirelessbeamformingenergyidrs
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Pinching-antenna systems (PASS) have recently emerged as a promising technology for improving wireless communications by establishing or strengthening reliable line-of-sight (LoS) links by adjusting the positions of pinching antennas (PAs). Motivated by these benefits, we propose a novel PASS-aided multi-input multi-output (MIMO) system for simultaneous wireless information and power transfer (SWIPT), where the PASS are equipped with multiple waveguides to provide information transmission and wireless power transfer (WPT) for several multiple antenna information decoding receivers (IDRs), and energy harvesting receivers (EHRs), respectively. Based on the system, we consider maximizing the sum-rate of all IDRs while guaranteeing the minimum harvested energy of each EHR by jointly optimizing the pinching beamforming and the PA positions. To solve this highly non-convex problem, we iteratively optimize the pinching beamforming based on a weighted minimum mean-squared-error (WMMSE) method and update the PA positions with a Gauss-Seidel-based approach in an alternating optimization (AO) framework. Numerical results verify the significant superiority of the PASS compared with conventional designs.

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  1. Center-Fed Pinching Antenna System (C-PASS): Modeling, Analysis, and Beamforming Design

    cs.IT 2026-02 conditional novelty 5.0

    A single-waveguide pinching-antenna system with multiple center-fed input ports achieves degree-of-freedom min(M,K) and power gain O(P_T M), breaking the rank-one bottleneck of conventional end-fed designs.