| Summary: | 碩士 === 南台科技大學 === 通訊工程研究所 === 98 === The paper for studies the OFDM transmission synchronous system, Containing STO、CFO、RCFO and SCO、Interpolator、Phase Modification. The paper conducts the simulator study by the DVB-T system. DVB-T is Taiwan at present the DVB-T main specification; DVB-T mainly by OFDM construction realization. Therefore in synchronous processing, good and badly can decide the OFDM sub-carrier whether can the mutual influence, then loses the orthogonality; Creates between OFDM symbol to disturb (ICI) and (ISI). Synchronous processing way, How has to achieve fast simple and accurate will be a very important topic. Moreover, we according to pilot the characteristic, Makes a pilot producer in the receive, With symbol multiplication, Obtains on the phase the error. And the inferential reasoning and the improvement sample displacement estimates mathematics type. Such way may reduce the miscellaneous news the disturbance, Let in the tracing sample the erroneous process finer and accurate.
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