TY - GEN
T1 - VWAN
T2 - 2nd IEEE International Conference on Industrial Internet Cloud, ICII 2019
AU - Kandel, Laxima Niure
AU - Yu, Shucheng
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - Indoor localization techniques, both device-based and device-free, using WiFi signals is advancing with an ever-increasing pace. Despite being limited by the number of physical antennas, smaller bandwidth range (20 MHz/40 MHz) and non-trivial phase noises, decimeter-level localization using commodity WiFi chipsets (802.11n) is becoming a reality. Unlike specialized wireless modules, commodity devices face the accuracy limitation dictated by antenna count for Angle-of-Arrival (AoA) methods and bandwidth for Time-of-Flight (ToF) methods. Promising state-of-the-art localization schemes like Chronos overcomes the bandwidth limitation by emulating a wideband WiFi radio through frequency hopping. In this paper, we investigate if an increase in effective bandwidth also solves the problem of fewer antennas and enables superior resolution of Multipath Component (MPC) separation. Our study has led to a system called VWAN which is a virtual antenna extension solution that entails no hardware changes. Simulation results demonstrate that VWAN can accurately disentangle almost all MPCs. This capability to precisely separate all MPCs and consequently completely characterize wireless channel will not only increase localization accuracy but enormously benefit other applications such as passive tracking, WiFi imaging and gesture recognition.
AB - Indoor localization techniques, both device-based and device-free, using WiFi signals is advancing with an ever-increasing pace. Despite being limited by the number of physical antennas, smaller bandwidth range (20 MHz/40 MHz) and non-trivial phase noises, decimeter-level localization using commodity WiFi chipsets (802.11n) is becoming a reality. Unlike specialized wireless modules, commodity devices face the accuracy limitation dictated by antenna count for Angle-of-Arrival (AoA) methods and bandwidth for Time-of-Flight (ToF) methods. Promising state-of-the-art localization schemes like Chronos overcomes the bandwidth limitation by emulating a wideband WiFi radio through frequency hopping. In this paper, we investigate if an increase in effective bandwidth also solves the problem of fewer antennas and enables superior resolution of Multipath Component (MPC) separation. Our study has led to a system called VWAN which is a virtual antenna extension solution that entails no hardware changes. Simulation results demonstrate that VWAN can accurately disentangle almost all MPCs. This capability to precisely separate all MPCs and consequently completely characterize wireless channel will not only increase localization accuracy but enormously benefit other applications such as passive tracking, WiFi imaging and gesture recognition.
KW - -Channel-State-Information-(CSI)
KW - -MIMO-(Multiple-Input-Multiple-Output)
KW - -OFDM-(Orthogonal-Frequency-Division-Multiplexing)
KW - Indoor-Localization
UR - http://www.scopus.com/inward/record.url?scp=85085911463&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85085911463&partnerID=8YFLogxK
U2 - 10.1109/ICII.2019.00052
DO - 10.1109/ICII.2019.00052
M3 - Conference contribution
AN - SCOPUS:85085911463
T3 - Proceedings - IEEE International Conference on Industrial Internet Cloud, ICII 2019
SP - 258
EP - 267
BT - Proceedings - IEEE International Conference on Industrial Internet Cloud, ICII 2019
Y2 - 10 November 2019 through 12 November 2019
ER -