Title :
AOA estimation for coexisting UWB signals with multipath channels
Author :
Hsin-Chin Liu ; Cheng-Wei Hsuan
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
The applications of location-based service (LBS) grow rapidly and draw significant research attention recently. As the advance of localization technology, not only the LBS can be applied outdoors but also in indoor environments with abundant multipath channels. Angle-of-Arrival (AOA) estimation is a vital technology for signal source localization; however, its accuracy is significantly affected by multipath signal propagation. Ultra-Wideband (UWB) signal as one of promising short-range communication technologies has been used in signal localization and shown excellent performance. Yet rare works investigate the scenario that several UWB signal sources coexisting in an environment. This work considers AOA estimation for coexisting UWB signal sources in an environment with multipath channels. An antenna array is designed for such an environment, which can classify signals and estimate the AOA of their corresponding shortest path based on received signals. Feasibility and performance of the proposed method are verified by computer simulation results.
Keywords :
antenna arrays; direction-of-arrival estimation; indoor environment; multipath channels; radiowave propagation; ultra wideband communication; AOA estimation; LBS; UWB signals; angle-of-arrival estimation; antenna array; indoor environments; localization technology; location-based service; multipath channels; multipath signal propagation; signal source localization; ultra-wideband signal; Antenna arrays; Arrays; Directional antennas; Directive antennas; Receiving antennas; Ultra wideband antennas; AOA; Array antenna; Channel; LBS; Multipath; UWB;
Conference_Titel :
Telecommunications and Multimedia (TEMU), 2014 International Conference on
Conference_Location :
Heraklion
DOI :
10.1109/TEMU.2014.6917756