Real-Time Demo of ISAC-Based Channel Knowledge Map Prototyping System
Chaoyue Zhang, Zhiwen Zhou, Yuhang Yang, Yuelong Qiu, Zhi Yu, Xiaoli Xu, Yong Zeng · 2024
This demo will present an integrated sensing and communication (ISAC)-based channel knowledge map (CKM) prototype system, demonstrating the mutually beneficial relationship between ISAC and CKM. The system consists of an ISAC base station (BS), an user equipment (UE), and a server. By using the shared orthogonal frequency division multiplexing (OFDM) waveform over the millimeter wave (mmWave) band, the ISAC BS is able to communicate with the UE while simultaneously sensing the environment and acquiring UE’s location. The prototype will showcase the complete process of the construction and application of an ISAC-based CKM. For CKM construction, the BS stores the UE’s channel feedback information in a database indexed by the UE’s location on the server. For CKM application, the BS looks up the optimal beam index from the CKM based on the UE’s location to achieve training-free mmWave beam alignment.