Computer Science > Networking and Internet Architecture
[Submitted on 31 May 2025
(this version)
, latest version 15 Jul 2025 (v2)
]
Title: Sum Rate Maximization for Wireless Powered Pinching-Antenna Systems (PASS)
Title: 无线供电夹角天线系统（PASS）的和速率最大化
Abstract: In this letter, we investigate a novel wireless powered communication network (WPCN) enabled by a pinching-antenna system (PASS), in which multiple pinching antennas (PAs) are activated on a waveguide to establish strong line-of-sight (LoS) links with multiple devices. In this system, time division multiple access (TDMA) and non-orthogonal multiple access (NOMA) protocols are adopted to fully explore the potential of the wireless information transmission. To maximize the sum rate of the PASS-WPCN, we formulate the problems under both protocols by jointly optimizing the time slot allocation, transmit powers of the devices, and activation positions of the PAs. Firstly, the intractable non-convex original problems are both decoupled into two tractable subproblems, termed resource allocation and PAs position optimization. Specifically, a closed-form solution to the resource allocation subproblem is derived, and it is proven that the TDMA and NOMA protocols achieve identical maximum sum rate. Then, an element-wise algorithm is developed to obtain high-precision PAs activation positions. Numerical results reveal that 1) the performance of PASS-WPCNs significantly outperforms conventional WPCNs, and 2) in PASS-WPCNs, TDMA and NOMA protocols exhibit identical achievable sum rate performance.
Submission history
From: Yixuan Li [view email][v1] Sat, 31 May 2025 02:37:31 UTC (1,216 KB)
[v2] Tue, 15 Jul 2025 09:03:15 UTC (1,750 KB)
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