The physical model of multi-mode pinching-antenna systems (PASS) is proposed based on the coupled-mode theory. Within the considered model, multiple guided modes are simultaneously excited in a single waveguide and exploited as independent signal-bearing channels, thus providing additional modal degrees of freedom for...
Jing-Jing Zhao, Song-Tao Xue, Xi-Dong Mu et al.· 0 citations
This letter investigates rotatable antenna (RA)-enabled downlink non-orthogonal multiple access (NOMA) communications, in which the antenna boresights can be independently adjusted to introduce additional spatial degrees of freedom. Under the successive interference cancellation constraint, we formulate a sum rate maxi...
Yi-Heng Zhang, Jing-Jing Zhao, Xi-Dong Mu et al.· IEEE Wireless Communications...· 0 citations
This paper proposes a movable-element (ME) enabled simultaneously transmitting and reflecting surface (ME-STARS)-assisted non-orthogonal multiple access (NOMA) communication system, where the positions of STARS elements can be flexibly reconfigured to introduce additional spatial degrees-of-freedom. Our objective is to...
Jing-Jing Zhao, Yi-Heng Zhang, Kai-Quan Cai et al.· 0 citations
Multiple access (MA) design is investigated to facilitate pinching-antenna systems (PASS)-based multi-user communications. By exploiting the newly introduced waveguide domain and existing frequency domain, two MA schemes are explored, namely pure waveguide division multiple access (WDMA) and hybrid WDMA. For each MA sc...
Qiao Ren, Xi-Dong Mu, Siyu Lin et al.· IEEE Transactions on Wireles...· 0 citations
Numerical results demonstrate that: 1) Eve's velocities and positions can be accurately tracked with the proposed two-timescale framework in both multiple- and single-waveguide scenarios; and 2) PASS achieves superior secrecy rate compared to conventional multiple-antenna benchmarks.
Haowen Song, Jing-Jing Zhao, Xi-Dong Mu et al.· 1 citation
A time-evolving RCE model is developed that characterizes the joint effects of residual phase mismatches, residual carrier frequency offsets, and oscillator phase noise, and a Gauss--Legendre quadrature-based weighted minimum mean square error (WMMSE) optimization framework is developed.
Mingjun Sun, Xi-Dong Mu, Shaochuan Wu et al.· 0 citations
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