| Summary: | 碩士 === 國立交通大學 === 電信工程研究所 === 104 === Localization has been an important issue in wireless systems. Many methods have been proposed to solve the problem. However, most methods were developed for line-of-sight (LOS) scenarios. Recently, a single-bound scattering (SBC) model has been proposed to solve non-LOS (NLOS) localization problem using time-difference-of-arrival (TDOA), angle-of-arrival (AOA), and angle-of-departure (AOD). Although this method is effective, only a single scattering path is considered for a wireless link. Also, how to obtain TDOA, AOA, and AOD observations are not discussed. This thesis is aimed to solve the problems. First, a SBC model with multiple scattering paths and the corresponding localization method are developed. Then, a joint channel, AOA, and AOD method is applied to obtain the observations. Finally, a particle-filter-like algorithm is developed to solve the local minimum problem frequently encountered in localization algorithms. Simulations show that the proposed method can yield satisfactory results and it significantly outperforms the existing method.
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