本整合型計畫所提出的前瞻性車用行動視訊會議系統(DVB-Video Conference, DVB-V) 是應用於行動中的車與車間的多媒體傳輸系統。因為歐規的數位電視廣播系統優點是擁有非常彈性的傳輸參數設定，因此本系統的技術是基於DVB-T/H 之OFDM 傳輸技術並再加以改進。由於兩兩相對移動中的車輛在傳輸時會造成嚴重的都卜勒頻率漂移效應而使得傳統數位電視廣播系統無法正確傳輸，本系統引進了多輸入輸出(Multiple-Input Multiple-Output, MIMO)之多天線架構來克服通道快速衰減變化的問題。本子計畫將以ASIC 方式實現DVB-V 內接收機數位基頻電路，包含提出MIMO OFDM 數位解調、通道估測與同步設計電路的解決方案。配合傳送端多輸入輸出訊號的編碼，我們將提出準確的同步與通道估測演算法，並從整體系統設計的觀點設計出低電壓、低功耗的 VLSI 晶片。除此之外，本子計畫還需與其他子計畫合作將整個MIMO OFDM 的解調與時空碼解碼系統整合至一個晶片系統。 This integrated project proposes an advanced in-car video conference system applied in mobile car-to-car multimedia communication. Since the advantage for Europe digital video broadcasting (DVB) is the flexible parameter settings, the proposed system is based on DVB-T/H OFDM transmission technology and gives improvement. However, mobile-to-mobile transmission would induce severer Doppler frequency offset effects that make traditional DVB system be not able to transmit correctly. Proposed system introduces the Multiple-Input Multiple-Output (MIMO) technique with multi-antenna structure to combat this fast Rayleigh fading problem. In this subproject, we will implement the digital baseband DVB-V (DVB-Video Conference) inner receiver with ASIC approach and also proposed integrated solutions including digital demodulation, channel estimation and synchronization. According to the MIMO encoder design in transmitter, we will propose an accurate channel estimation and synchronization algorithm. In the overall system design point of view, VLSI chip with low voltage and power consumption will be considered. Besides, this subproject will cooperate with other subprojects to integrate MIMO OFDM demodulator and space-time decoder in a system chip. 研究期間：9608 ~ 9707
