A Survey on Fundamental Limits of Integrated Sensing and Communication

🤖 Plain-English Summary

The integrated sensing and communication (ISAC), in which the sensing and communication share the same frequency band and hardware, has emerged as a key technology in future wireless systems due to two main reasons. After that, we present the current research progresses on fundamental limits of each class of the traditional sensing and ISAC systems.

🔑 Key Findings

• First, many important application scenarios in fifth generation (5G) and beyond, such as autonomous vehicles, Wi-Fi sensing and extended reality, requires both high-performance sensing and wireless communications.
• Second, with millimeter wave and massive multiple-input multiple-output (MIMO) technologies widely employed in 5G and beyond, the future communication signals tend to have high-resolution in both time and angular domain, opening up the possibility for ISAC.
• As such, ISAC has attracted tremendous research interest and attentions in both academia and industry.

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