Tootfinder

Diffusion^2: Turning 3D Environments into Radio Frequency Heatmaps
Kyoungjun Park, Yifan Yang, Changhan Ge, Lili Qiu, Shiqi Jiang
https://arxiv.org/abs/2510.02274 https://

Diffusion^2: Turning 3D Environments into Radio Frequency Heatmaps
Modeling radio frequency (RF) signal propagation is essential for understanding the environment, as RF signals offer valuable insights beyond the capabilities of RGB cameras, which are limited by the visible-light spectrum, lens coverage, and occlusions. It is also useful for supporting wireless diagnosis, deployment, and optimization. However, accurately predicting RF signals in complex environments remains a challenge due to interactions with obstacles such as absorption and reflection. We in…

RFSoC receiver calibration system for 21-cm global spectrum experiments from space: The CosmoCube case
Jiacong Zhu, Eloy de Lera Acedo, Kaan Artuc, Xuelei Chen
https://arxiv.org/abs/2510.06558

RFSoC receiver calibration system for 21-cm global spectrum experiments from space: The CosmoCube case
The CosmoCube project plans to deploy a global 21-cm spectrometer with 10-100 MHz observation band in a lunar orbit. The farside part of such an orbit, i.e. the part of orbit behind the Moon, offers an ideal site for accurately measuring the 21-cm signal from the Dark Ages, Cosmic Dawn and Epoch of Reionization, as the effects of the Earth's ionosphere, artificial radio frequency interference (RFI), and complex terrain and soil are all avoided. Given the limitations of a satellite platform, we …

Standardized Machine-Readable Point-Data Format for Consolidating Wireless Propagation Across Environments, Frequencies, and Institutions
Dipankar Shakya, Naveed A. Abbasi, Mingjun Ying, Isha Jariwala, Jason J. Qin, Ishaan S. Gupte, Bridget Meier, Guanyue Qian, Daniel Abraham, Theodore S. Rappaport, Andreas F. Molisch
https://arxiv.org/abs…

Standardized Machine-Readable Point-Data Format for Consolidating Wireless Propagation Across Environments, Frequencies, and Institutions
The necessity of new spectrum for 6G has intensified global interest in radio propagation measurements across emerging frequency bands, use cases, and antenna types. These measurements are vital for understanding radio channel properties in diverse environments, and involve time-consuming and expensive campaigns. A major challenge for the effective utilization of propagation measurement data has been the lack of a standardized format for reporting and archiving results. Although organizations s…

Null-Shaping for Interference Mitigation in LEO Satellites Under Location Uncertainty
Fernando Moya Caceres, Akram Al-Hourani, Saman Atapattu, Kandeepan Sithamparanathan
https://arxiv.org/abs/2510.00816

Null-Shaping for Interference Mitigation in LEO Satellites Under Location Uncertainty
Radio frequency interference (RFI) poses a growing challenge to satellite communications, particularly in uplink channels of Low Earth Orbit (LEO) systems, due to increasing spectrum congestion and uncertainty in the location of terrestrial interferers. This paper addresses the impact of RFI source position uncertainty on beamforming-based interference mitigation. First, we analytically characterize how geographic uncertainty in RFI location translates into angular deviation as observed from th…