Study on Pilot Assisted Channel Estimation in OFDM systems

• Main Authors: Chu Chih-Wei, 朱志偉
• Other Authors: Yu Jung-Lang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/13026742050291640133

碩士 === 輔仁大學 === 電子工程學系 === 94 === In recent years, orthogonal frequency division multiplexing (OFDM) systems have been widely applied for high speed wireless communication systems because of the promising progress in digital signal processing (DSP) and VLSI technologies as well as the requirement of high data rate transmission systems. In this paper, the performances of OFDM communication systems by employing the pilot-based channel estimation are studied. The pilot patterns can be selected in time and/or frequency domains. The effects of pilot patterns on channel estimation and bit-error-rate (BER) in OFDM system are investigated. Computer simulations are given to demonstrate the effectiveness of the pilot-based channel estimators for OFDM systems.