Precise Power Delay Profiling with Commodity WiFi
Nanyang Technological University
Abstract
Power delay profiles characterize multipath channel features, which are widely used in motion- or localization-based applications. Recent studies show that the power delay profile may be derived from the CSI traces collected from commodity WiFi devices, but the performance is limited by two dominating factors. The resolution of the derived power delay profile is determined by the channel bandwidth, which is however limited on commodity WiFi. The collected CSI reflects the signal distortions due to both the channel attenuation and the hardware imperfection. A direct derivation of power delay profiles using raw CSI measures, as has been done in the literature, results in significant inaccuracy. In this paper, we…
Citation impact
- FWCI
- 28.11
- Percentile
- 100%
- References
- 51
Authors
3Topics & keywords
- Multipath propagation
- Computer science
- Delay spread
- Power delay profile
- Channel (broadcasting)
- Profiling (computer programming)
- Propagation delay
- Wireless