| 摘要 |
PURPOSE: A bandwidth conversion relay system using a PCS(Personal Communication System) link frequency band is provided to solve a non-linear problem in the output of an HPA(High Power Amplifier) by using a DPC(Digital Pre-distortion Control) method. CONSTITUTION: A repeater for a link(100) changes a permission frequency signal of a service frequency band into a PCS frequency band signal. The repeater for the link changes the PCS link frequency band signal of an RS(Relay Station) into a service frequency band signal A service repeater(200) changes the PCS link frequency band signal of the repeater for the link into the service frequency band signal. The service repeater changes the service frequency band signal received by subscribers into the PCS link frequency band signal. |
