Tradeoffs Between Channel Sensing and Symbol Characterization in ISAC: An IR-UWB Case

Due to the advantages in hardware implementation and spectrum efficiency, the integration of sensing and commu-nications (ISAC) has been attractive so far. In this paper, the inherent tradeoffs between sensing and communications (S&C) in frequency division multiplexing and waveform integration systems are analyzed, based on the high time resolution impulse radio ultra wideband (IR-UWB) signals. More specifically, we introduce two resource allocation schemes from the power and bandwidth perspective, to show the corresponding performance metrics including the Cramer Rao Bound (CRB) and Shannon limits for S&C. Lastly, the latest UWB standards are introduced as constraints, to perform evaluations.