Fast Algorithm for Joint 2D DOAs and Carrier Frequency/Time Delay Estimation

• Main Authors: Zhi-wen Lo, 羅志文
• Other Authors: Wen-Hsien Fang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/x83r82

碩士 === 國立臺灣科技大學 === 電子工程系 === 94 === ABSTRACT In this thesis, we propose low-complexity, yet high accuracy algorithms to jointly estimate two-dimensional directions of arrival (DOAs) and carrier frequency using a uniform rectangular array. To achieve this, we utilize the (2-D) unitary Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT) and one-dimensional (1-D) unitary ESPRIT to estimate the 2-D DOAs and frequencies of the incoming rays, respectively. Also, to enhance the performance, a signal partitioning process, implemented by a set of projection matrices, is invoked in between the unitary ESPRIT algorithms. To further reduce the computation, we also decompose the 2-D DOA estimation process, so that only 1-D unitary ESPRIT algorithm are required. Similar techniques are also employed for joint 2-D DOA and delay estimation. Conducted simulations show that the new algorithms can provide satisfactory performance compared with previous works, but with drastically reduced computational complexity. Keywords: 2D DOA, carrier frequencies, time delay, projection matrices, 2D Unitary-ESPRIT, 1D Unitary-ESPRIT, parameter estimation