OFDM with Equalizer System for Shallow Underwater Acoustic Channel

• Main Authors: Chih-En Chang, 張誌恩
• Other Authors: Jian-Hong Chen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/23682812048381291932

碩士 === 聖約翰科技大學 === 電子工程系碩士班 === 100 === In this paper, we use the underwater channel model is [1] for our research. We use the Orthogonal Frequency Division Multiplexing system for the underwater channel to improve the transmission results. There are several important features in the warm shallow underwater channel, such as time-varying and multi-path effects. The Doppler spread effect makes the phase drastically changes. It causes unfavorable factors in underwater communication. In this paper, we use the OFDM to combat multi-path and remove the delay spread which is caused by the underwater channel. We use the equalizer to overcome underwater channel fading which caused the distortion.