REVIEW 4 cited by
Far- versus Near-Field RIS Modeling and Beam Design
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
In this chapter, we investigate the mathematical foundation of the modeling and design of reconfigurable intelligent surfaces (RIS) in both the far- and near-field regimes. More specifically, we first present RIS-assisted wireless channel models for the far- and near-field regimes, discussing relevant phenomena, such as line-of-sight (LOS) and non-LOS links, rich and poor scattering, channel correlation, and array manifold. Subsequently, we introduce two general approaches for the RIS reflective beam design, namely optimization-based and analytical, which offer different degrees of design flexibility and computational complexity. Furthermore, we provide a comprehensive set of simulation results for the performance evaluation of the studied RIS beam designs and the investigation of the impact of the system parameters.
Forward citations
Cited by 4 Pith papers
-
Near-field Liquid Crystal RIS Phase-Shift Design for Secure Wideband Illumination
A frequency-aware LC-RIS phase-shift design raises simulated worst-case secrecy rate to about 2 bits/symbol over 8 GHz at 60 GHz versus benchmarks that ignore the LC frequency response.
-
Robust Communication Design in RIS-Assisted THz Channels
A mixed-criticality superposition coding scheme for RIS-assisted THz links that decodes high-priority data whenever either the direct or the reflected path is available, reducing critical-data queueing delay versus ti...
-
Liquid Crystal-Based RIS Loss-Trade-Off Analysis
For liquid crystal reconfigurable surfaces, the optimal phase-shifter length, which trades insertion loss against phase-shift range, depends on the user's position: specular users want a short shifter, off-axis users ...
-
THz-Band Near-Field RIS Channel Modeling for Linear Channel Estimation
Includes near-field correlation and mutual coupling in mixture-Gamma RIS channel models and shows they materially improve THz channel-estimation NMSE.
Discussion (0). Continue with ORCID to comment.