Pushing Bistatic Wireless Sensing toward High Accuracy at the Sub-Wavelength Scale
Contactless sensing using wireless communication signals has garnered significant attention due to its non-intrusive nature and ubiquitous infrastructure. Despite the promise, the inherent bistatic deployment of wireless communication introduces clock asynchronism, which leads to unknown phase offsets in channel response and hinders fine-grained sensing. State-of-the-art systems widely adopt the cross-antenna channel ratio to cancel these detrimental phase offsets. However, the channel ratio preserves sensing feature accuracy only at integer-wavelength target displacements, losing sub-wavelength fidelity. To overcome this limitation, we derive the first quantitative mapping between the di...
| Authors | Wenwei Li, Jiarun Zhou, Qinxiao Quan et al. |
|---|---|
| Primary category | cs.IT |
| Published | 8 March 2026 |
| Last updated at source | 8 March 2026 |
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