The use of frequency division duplex (FDD).
使用频分双工(FDD)。
As the only system using Time Division Duplex in the 3g system, it has some advantages over systems of Frequency Divsion Duplex.
作为3g系统中唯一一个使用时分双工的系统，它具备了许多频分双工系统所不具备的优点。
As the only system using Time Division Duplex in the 3g system, it has some advantages over systems of Frequency Divsion Duplex.
作为3g系统中唯一一个使用时分双工的系统，它具备了许多频分双工系统所不具备的优点。
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