Abstract
Joint direction of arrival (DOA) and time delay (TD) estimation of wideband signals such as WIFI and mobile communication signals has to face the challenges aroused by multipath effect in indoor environments. New methods that can deal with coherent wideband signals with high estimation accuracy are necessary. To achieve localization when signals are coherent, this paper proposes a new joint estimation method which fully utilizes the subcarriers of wideband signals. This method could greatly extend the array aperture and accomplish the joint estimation through UCA-ESPRIT and one-dimensional (1-D) search. Simulation experiments are conducted to show the validity and efficiency of this method.
Highlights
WIFI and mobile communication signals are typical wideband signals that have been widely applied in recent decades
For wideband signals in indoor environments, this paper proposes a novel joint direction of arrival (DOA) and time delay (TD) estimation method that can deal with coherent signals
The virtual array aperture is greatly expanded by dividing wideband signals into several subcarriers
Summary
WIFI and mobile communication signals are typical wideband signals that have been widely applied in recent decades. As location-based services are becoming more and more popular, localization based on WIFI and mobile communication signals in indoor environments has a promising prospect [1]. These wideband signals utilize multi-carrier modulation (MCM) technology which contains more frequency points than traditional narrowband signals [2]. While some others have too high computational complexity and poor estimation accuracy [6] In this way, we propose a novel method for joint estimation in multipath environments based on UCA that can achieve both low computation and high accuracy. The estimation results show the performance of our proposed method
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
