Synchronization Research Of IEEE802.11a And Embedded Application

Wireless LAN has been developed into one of the most important parts of the computer network with the increasing demands for broadband wireless communication. It is the successful establishment and consecutive development of IEEE802.il protocol that causes WLAN become the reliable and flexible network connection scheme in the places which can not be accessed by wired network.Orthogonal Frequency Division Multiplexing (OFDM) is a special case of multicarrier transmission,in which a single high data rate datastream is transmitted using a number of lower data rate subcarriers. In July 1998,the IEEE standardization group selected the OFDM modulation technique for their new IEEE802.1 la standard,targeting data transmission from 6 up to 54 Mbps. Meanwhile,this new IEEE standard is the first one to use OFDM in packet based communications. (Before the proposal of this standard,use of OFDM was limited to continuous transmission systems)Combined with the national high technology project named "Key techniques of the wireless module in fieldbus facilities",author focuses on the research of baseband technologies of IEEE802.il/lla physical layer,and put forward some novel algorithms about the timing and frequency offset synchronization and the channel estimation of OFDM transreceiver in WLAN,which have been published on some kernel transaction and international conference and shows the author's great research achievements.