Design and Implementation of a MIMO-OFDM System for WLANs

• Main Authors: Jung-Yen Peng, 彭容彥
• Other Authors: Dah-Chung Chang
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/54926318600841336397

碩士 === 國立中央大學 === 通訊工程研究所 === 93 === Because of the demand of higher transmission data rate and better transmission quality, the MIMO-OFDM technology is the trend of the next-generation WLANs. In the thesis, we design a MIMO-OFDM baseband transceiver with two transmit antennas and two receive antennas based on the WWiSE（World Wide Spectrum Efficiency）Alliance’s IEEE 802.11n proposal. Then the architecture is implemented by VHDL. In this thesis, an STBC-OFDM system is described, including the functions of frame detection, symbol timing synchronization, carrier frequency synchronization, and channel estimation. First, each block is discussed individually and the performance is analyzed. Finally, from the system-level simulation results, we show that the proposed MIMO-OFDM receiver offers better performance than the IEEE 802.11a system in an indoor multipath channel.