Zhaowei Chang

ORCID: 0000-0002-8689-410X
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About
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Research Areas
  • Millimeter-Wave Propagation and Modeling
  • Microwave Engineering and Waveguides
  • Advanced MIMO Systems Optimization
  • Power Line Communications and Noise
  • Terahertz technology and applications
  • Advanced MEMS and NEMS Technologies
  • Acoustic Wave Resonator Technologies
  • Algebraic structures and combinatorial models
  • Fractional Differential Equations Solutions
  • Nonlinear Waves and Solitons
  • Photonic and Optical Devices

Beijing University of Posts and Telecommunications
2021-2025

Ningbo University
2011

Terahertz (THz) communication has been envisioned as a key enabling technology for sixth-generation (6G). In this paper, we present an extensive THz channel measurement campaign 6G wireless communications from 220 GHz to 330 GHz. Furthermore, the path loss is analyzed and modeled by using two single-frequency models multiple-frequencies model. It found that at most frequency points, measured larger than in free space. But around 310 GHz, propagation attenuation relatively weaker compared...

10.23919/jcc.2021.05.002 article EN China Communications 2021-05-01

10.23919/eucap63536.2025.10999809 article EN 2022 16th European Conference on Antennas and Propagation (EuCAP) 2025-03-30

Terahertz (THz) communication is envisioned as the possible technology for sixth-generation (6G) system. THz channel propagation characteristics are basis of designing and evaluating In this paper, measurements at 100 GHz 132 conducted in an indoor office scenario urban microcellular (UMi) scenario, respectively. Based on measurement, 3GPP-like parameters extracted analyzed. Moreover, models available simulation impulse response by geometry-based stochastic model (GBSM). Then, comparisons...

10.48550/arxiv.2305.14997 preprint EN other-oa arXiv (Cornell University) 2023-01-01

Terahertz (THz) communication technology is considered as one of the key technologies sixth-generation (6G) communications. The study THz channel characteristics basis for evaluating, deploying, and optimizing systems. In this paper, we conduct measurements in line-of-sight (LOS) non-LOS (NLOS) scenarios an indoor-office scenario at 100 GHz. Based on measured data, path loss (PL) root-mean-squared (RMS) delay spread (DS) are analyzed modeled. First, differences between omnidirectional...

10.1109/vtc2023-spring57618.2023.10200800 article EN 2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring) 2023-06-01

As one of the sixth-generation (6G) candidate technologies, terahertz (THz) communication is considered a promising way to achieve high-precision capability and large capacity in Industrial Internet Things (IIoT) due its wide bandwidth short wavelength. This paper presents time-varying THz channel measurements at 105 GHz an indoor factory (InF). Firstly, number multipath components (MPC) root-mean-square delay spread (RMS DS) line-of-sight (LoS) nonline-of-sight (NLoS) environments are...

10.23919/eucap60739.2024.10501557 article EN 2022 16th European Conference on Antennas and Propagation (EuCAP) 2024-03-17

Terahertz (THz) integrated sensing and communication (ISAC) holds the potential to achieve high data rates high-resolution sensing. Reconstructing propagation environment is a vital step for THz ISAC, as it enhances predictability of channel reduce overhead. In this letter, we propose an reconstruction methodology (ERM) merging reflectors multi-targets based on single-sided small-scale characteristics. method, inclination position tiny reflection faces one single multi-path (MPC) are...

10.48550/arxiv.2412.03960 preprint EN arXiv (Cornell University) 2024-12-05

Beamforming is an essential part of the fifth-generation (5G) mobile communication technology. And it will continue to play indispensable role in sixth-generation (6G) system. Due unequal numbers radio frequency (RF) chains between base station (BS) and user equipment (UE), asymmetric beam patterns exist BS UE. In this case, characteristics downlink (DL) channel uplink (UL) need be explored. paper, measurements have been performed indoor office at 39 GHz. measurement campaign, a directional...

10.1109/vtc2022-fall57202.2022.10012937 article EN 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall) 2022-09-01

Due to its wide bandwidth, terahertz (THz) communication technology has the capability be applied in high-precision positioning and sensing industrial applications. This paper presents co-polarized cross-polarized THz channel measurements at 132 GHz an indoor factory (InF). Firstly, we analyze model path loss for both directional omnidirectional channels. It is found that exponent (PLE) horizontal polarization slightly smaller than vertical InF. Furthermore, cross-polarization, certain...

10.1109/gcwkshps58843.2023.10464864 article EN 2022 IEEE Globecom Workshops (GC Wkshps) 2023-12-04

Terahertz (THz) channel propagation characteristics are vital for the design, evaluation, and optimization THz communication systems. Moreover, reflection plays a significant role in propagation. In this letter, coefficient of is researched based on extensive measurement campaigns. Firstly, we set up sounder from 220 to 320 GHz with incident angle ranging 10{\deg} 80{\deg}. Based measured loss, coefficients five building materials, i.e., glass, tile, aluminium alloy, board, plasterboard,...

10.48550/arxiv.2207.04596 preprint EN other-oa arXiv (Cornell University) 2022-01-01
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