The University of Osaka · Engineering
Professor Jianhao Wang's research lab focuses on advanced materials and systems for next-generation wireless communications and space electronics. The lab specializes in millimeter wave and massive MIMO channel estimation, integrated sensing and communication (ISAC) for 6G networks, and the reliability of electronic packaging under extreme conditions such as cryogenic temperatures and radiation exposure. Additionally, the lab explores biomedical applications of biodegradable materials, including collagen microneedles for targeted drug delivery in treating infections. These interdisciplinary efforts bridge telecommunications, materials science, and biomedical engineering to address challenges in future 6G systems, deep space exploration, and regenerative medicine.
Figures are computed from collected data and may differ slightly.
Channel estimation is a challenging issue for millimeter wave (mmWave) and massive multiple-input multiple-output (MIMO) in the future sixth generation (6G) wireless systems, where the conventional estimation schemes may fail to track the fast varying channels, especially in high-speed mobile scenarios. In this paper, a novel tensor-based uplink channel estimation scheme is proposed for multi-user MIMO (MU-MIMO) systems over time-varying channels. In the proposed scheme, a low-overhead pilot tra
Skin and soft tissue infections (SSTI) include bacterial infections of the skin, muscles, and connective tissue such as ligaments and tendons. SSTI in patients with immunocompromising diseases may lead to chronic, hard-to-heal infected wounds, resulting in disability, amputation, or even death. To treat SSTI and rebuild the defensive barrier of the skin, here we utilize recombinant type XVII collagen protein (rCol XVII) to construct biodegradable, regenerative collagen microneedles (rCol-MNs) fo
To meet the demand of cryogenic reliability on the electronic packaging for deep space satellite, the three-dimensional interfacial morphology and property of eutectic SnPb solder joint under an extreme thermal shocking of 77–423 K were investigated. After thermal shocking, Cu-Sn IMC layers coarsened in the cross-sectional observation and micro-cracks formed in Cu6Sn5 layer. The rough Cu6Sn5 layer in the top view gradually smoothed, with broken Cu6Sn5 particles and exposed Cu3Sn. In the bottom-v
Cosmic radiation has always been the most obvious barrier to planetary travels, especially in long-duration deep space exploration missions. Therefore, the reliability of satellite materials and the requirements of satellite miniaturization have received considerable attention. In this paper, the effect of γ-ray irradiation on the reliability of Sn50Pb49Sb1/Cu solder joints was investigated. It was found that the influence of γ-ray irradiation on the thickness and morphology of the intermetallic
Pavement damage detection is of great significance for traffic safety and pavement maintenance. Traditional detection methods require a lot of time and cost, and there are many problems in image detection. Therefore, an improved YOLOv5 pavement damage detection algorithm, GSC-YOLOv5, is proposed. First of all, to solve the problem that small cracks are similar to pavement and difficult to detect, we introduced the self-designed Spatial Pyramid Pooling module into the backbone network of the orig
As one of the promising technologies of the future 6G network, Integrated Sensing and Communication (ISAC) is able to provide tremendous benefits such as performance improvement and cost reduction through integrating the two systems as a whole. The use of ISAC technology will introduce new sensing abilities and enhance information processing capabilities at base stations, and makes the interaction between base stations and vehicles more frequent, which brings huge benefits to connected automated
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