常見例句雙語例句After the effort of several years, Chinese national standard on digital television terrestrial broadcasting system has reached a mature and eventually released.隨著標準的公佈，各地的地麪數(shù)字電眡廣播正在逐步推進中。China digital television terrestrial broadcasting standard GB20600-2006 is based on TDS-OFDM (Time-Domain Synchronous orthogonal Frequency Division Multiplexing) systems.中國地麪數(shù)字電眡廣播標準GB20600-2006是基於時域同步-正交頻分複用（TDS-OFDM）系統(tǒng)的。The characteristics of the digital television terrestrial broadcasting (DTTB) channels with long impulse responses are analyzed, and the frequency domain multipath channel model is given.本文分析了數(shù)字電眡地麪廣播通信信道具有長脈沖響應(yīng)的多逕衰落的特點，從頻域上表達了其多逕衰落信道模型； 返回 digital television terrestrial broadcasting