Prototypes and Testbeds

Open-source real-time OFDM-ISAC

A USRP-based platform for real-time communication and monostatic/bistatic sensing. C++ processing, Python visualization, and over-the-air synchronization support algorithm prototyping and UAV delay-Doppler/micro-Doppler experiments.

Z. Zhou, C. Zhang, X. Xu, and Y. Zeng, "OpenISAC: An open-source real-time experimentation platform for OFDM-ISAC," IEEE Internet Things J., vol. 13, no. 17, pp. 41254–41269, 2026.

Paper · Project · Code

Environment-aware mmWave beam alignment

A 28-GHz phased-array testbed using beam index maps, UWB positioning, and receiver orientation for training-free beam selection. Experiments cover NLoS links, moving obstacles, and UE orientation changes.

Z. Dai et al., "Prototyping and experimental results for environment-aware millimeter wave beam alignment via channel knowledge map," IEEE Trans. Veh. Technol., vol. 73, no. 11, pp. 16805–16816, 2024.

Paper

ISAC-based CKM construction and application

A real-time mmWave OFDM platform for mobile-UE communication, localization, and environment sensing. Location-indexed channel feedback updates the CKM for training-free beam alignment and switching.

C. Zhang et al., "Prototyping and experimental results for ISAC-based channel knowledge map," IEEE Trans. Veh. Technol., vol. 74, no. 7, pp. 10719–10731, 2025.

Paper · Demo

UAV-based 3D CKM and environment reconstruction

A UAV with cellular measurement and RTK modules collects location-tagged RF data from commercial base stations. Cloud processing enables 3D CKM construction, LoS-state estimation, and building-height reconstruction.

C. Zhang et al., "Prototype of joint CKM and 3D environment reconstruction system via UAV RF measurements," in Proc. IEEE ICC, pp. 1–6, 2026.

Paper

Super-resolution sensing with 5G NR waveforms

A 28-GHz, 400-MHz testbed for range and velocity sensing with 5G NR OFDM waveforms. It compares MUSIC, ESPRIT, and periodogram processing while accounting for unequal cyclic-prefix lengths.

C. Zhang, Z. Zhou, H. Wang, and Y. Zeng, "Integrated super-resolution sensing and communication with 5G NR waveform: Signal processing with uneven CPs and experiments," in Proc. WiOpt, pp. 681–688, 2023.

Paper

Sensing with a 128-element XL-array

A 3.5-GHz, 245.76-MHz-bandwidth USRP/FPGA testbed with a switched 128-element array. Experiments validate matched-filtering and subarray processing to mitigate spatial wideband effects in UAV localization and environment sensing.

Q. Dai, W. Liu, J. Li, Z. Wang, and Y. Zeng, "Spatial wideband effect in near-field OFDM-ISAC: Signal processing and experimental results," submitted to IEEE Trans. Signal Process. (under review).