3D Environment Reconstruction Based on ISAC Channels

Integrated Sensing and Communication (ISAC) has emerged as a highly promising technology in 6G, attracting widespread attention. For ISAC, sensing echoes which provide knowledge of the surrounding environment, can be used for environment reconstruction to assist communications. However, different conditions of applications and systems result in different characterizations of ISAC channels, leading to varying reconstruction quality. Understanding influence of ISAC channel condition on reconstruction performance, such as frequency, bandwidth, and subcarrier spacing, is thus essential. This paper investigates 3D environment reconstructions based on ISAC channels, considering impacts of carrier frequencies (ranging from 3.5 GHz to 100 GHz), bandwidths (ranging from 40MHz to 400MHz), and subcarrier spacings (ranging from 60kHz to 360kHz). Additionally, Chamfer distance and F-score indicators are employed to analyze reconstruction performance in terms of accuracy and coverage range. The results in this paper can enrich the investigation of environment reconstruction baesd on ISAC channel and enable further designs of ISAC systems.