無線通訊的傳輸品質深受傳輸過程中的通道效應所影響，好的通道響應，容易獲得正確的接收結果，也能維持通訊的正確性。為了確認發射機與接收機在各種通道狀態下的通訊品質，本研究於軟體無線電平台上，進行通訊收發機以及通道效應模擬器的實現與測試。除了可以利用通訊收發機的調變演算法實現真實信號傳輸外，更可以藉由軟體無線電平台依據真實傳輸過程對發射信號進行處理，以模擬無線通訊在傳輸過程中所遭遇到的通道環境影響，包括多路徑傳輸與傳輸衰減等現象。為了清楚看出傳輸品質的變化，以圖形資料作為發射與接收品質的確認，讓使用者可以簡易的看出在通道模擬器所模擬的通道效應影響下，圖形資料是否可以正確地於接收端完整呈現。

The transmission quality of wireless communication is deeply related to the channel states. In order to confirm the communication quality between transmitters and receivers in various channel states, this study implements the wireless channel emulator on the software defined radio platforms. In addition to using digital modulation algorithms to realize the real signal transmission, it is also to process the transmitting signal through emulated channel effect according real environment of wireless communication systems on software defined radio platform, including multi-path and attenuation transmissions. The graphical data is also included to grade the qualities of transmission procedures for easily realizing whether the graphic data can be presented correctly at the receiver side under the influence of the channel effect simulated by the channel emulator.