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Orthogonal Frequency Division Multiplexing (OFDM) technology is a multi- carrier transmission technology , because it has a strong anti-jamming and anti- fading characteristics , and therefore subject to widespread concern . The OFDM technique has been widely used IEEE802.lla, HiperLAN / 2 and MMAC peer wireless LAN (WLAN) standard, digital audio broadcasting ( DAB ) , digital TV broadcasting (DVB) system . The the OFDM synchronization technology to analyze the previous synchronization algorithm and OFDM communication program simulation . First, an overview of the of OFDM development background , as well as its advantages and disadvantages and the key technology , and then introduces the basic principles of OFDM system , followed OFDM synchronization technology , symbol timing synchronization , carrier synchronization analysis and sampling clock synchronization and the the OFDM impact of timing and frequency offset . Again OFDM synchronization algorithm analysis , on Moose algorithms , Schmidl Gox algorithm , Minn algorithm to analyze and compare the three algorithms , the timing better come Minn algorithm Moose algorithm and SC algorithm in the same simulation conditions , it can be obtained the lower the error mean and mean square error. On this basis , an improved algorithm, summarized a AWGN channel and multipath fading channel , the improved method in frequency offset estimation mean square error is relatively small . Finally, the entire communication process in the OFDM system , process simulation, and validation analysis concluded OFDM communication , synchronization technology is very important , otherwise at the receiving end and prone to error .
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