與建設新基站相比，數字中繼器是一種更經濟實惠的改善信號覆蓋和通信品質的解決方案。而且它易於安裝和維護，可以幫助運營商快速取得覆蓋成效。

數位直放站是介於基站和移動終端之間的放大器，它通過施主天線接收來自基站的最強信號，線性放大信號並通過室內信號分佈系統傳輸給信號弱/盲區，同時，移動信號也可通過放大並經由相反的方向傳輸到基站。

Compared with building a new base station, digital repeater is a more economical solution to improve signal coverage and communication quality. And it is easy to install and maintain, which can help operators quickly achieve coverage results.

The digital repeater is an amplifier between the base station and the mobile terminal. It receives the strongest signal from the base station through the donor antenna, linearly amplifies the signal and transmits it to the weak signal/blind area through the indoor signal distribution system. At the same time, the mobile signal can also pass Amplify and transmit to the base station via the opposite direction.

數字直放站利用軟件無線電（這裡我們稱之為SDR）技術將移動信號轉換成0和1的數字數字，使信號能夠以數字方式進行處理。與模擬中繼器相比，SDR不僅能夠提高小區增強性能，而且可以增強中繼器並增加更多的功能。 SDR 使未來的網絡能夠在單一的硬件平台上工作，只需通過軟件即可實現不同頻率和更多功能的系統，從長遠來看，這將使系統更靈活、更容易、更快速地實現，而不會增加成本。

Digital Repeater use the software defined radio (here we call SDR) technology to transfer the mobile signals into digital numbers of 0 and 1, so that the signals can be processed in the digital mode. Compared with analog repeaters, SDR not only is able to improve the cell enhancement performance, but also strengthen and add more functions to the repeaters. SDR enables the future networks to work on a single hardware platform, and realize the systems of different frequencies and more functions simply by software, which in a long run will make the system more flexible, easier and quicker to implement without cost increase.