| Summary: | 碩士 === 國立中興大學 === 電機工程學系所 === 103 === In this thesis, an improved algorithm is proposed. The Regularized LS method incorporates the known information from pilots, and the latest channel information to generate improved channel estimation results than the standard LS method. However, when the number of transmission symbols increases, the benefit obtained from preamble will be reduced, and, the performance improvement of the regularized LS method will also be gradually decreased. We therefore analyze the convergent behavior to facilitate its comparison with the standard LS method. When the statistical properties of the LS method MSE and channel temporal correlation are known, we can find the converged MSE performance. Base on this result, we can find the performance of the regularized LS method in different OFDM systems, including the 802.11 and LTE systems. Simulation results demonstrate the validity of the proposed method and its performance analysis.
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