Performance Evaluation of Functional-Link and Fuzzy Adaptive Equalizers

• Main Authors: Chie-Chou Lin, 林繼洲
• Other Authors: Jeng-Kuang Hwang
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/03268846508126586236

碩士 === 元智大學 === 電機工程研究所 === 88 === Conventional adaptive equalizers are simple in both design and implementation. However, they cannot achieve satisfactory performance since only linear decision boundaries can be formed in the signal space. In this thesis, two kinds of adaptive equalizers capable of forming nonlinear decision boundaries are compared and evaluated. The first one is a functional-link structure, which achieves the required nonlinearities by taking functional expansions of the input signal. The second one is a fuzzy structure, which achieves the nonlinearities by using appropriate fuzzy sets and a set of if-then rules. Extensive computer simulations and performance comparisons have been made in this thesis. Both of the structures significantly outperform the conventional ones.