상세정보
학술지
Time-of-Arrival Estimation Through WLAN Physical Layer Systems
- 저자
- 김동규, 이양선
- 발행일
- 201506
- 출처
- Journal of Supercomputing, v.71 no.6, pp.1955-1974
- ISSN
- 0920-8542
- 출판사
- Springer
- 협약과제
- 13VC4300, 도로 교통 시설물의 내부 결함을 검출하기 위한 이동형 비접촉 고정밀 투과영상 탐지 시스템 개발, 김동규
- 초록
- Time-of-arrival (ToA) has been the most popular measurement parameter when estimating distance between two nodes, i.e., ranging. Several localization-only systems such as radar systems, satellite positioning systems, ultra-wideband systems provide their accurate ToA estimation methodologies for the ranging in their physical layer. In contrast to the localization-only systems, wireless LAN (WLAN) has no standard rule for accurate ranging method. Delay and channel uncertainty is the major problem of the ToA estimation. In this paper, delay characteristic of WLAN system is analyzed and how accurate ranging is possible using ToA estimation through WLAN physical layer round-trip time measurement. Experimental results of indoor/outdoor ranging and positioning are also provided.
- KSP 제안 키워드
- Layer systems, Measurement parameter, Physical Layer, Radar System, Round-Trip Time Measurement, Satellite positioning, ToA estimation, Ultra-Wide Band(UWB), Wireless Local Area Networks(WLANs), channel uncertainty, positioning system