Radio Relay Communication Method for Single Frequency Simplex Radio System Using by ROIP Technology

In order to realize the radio relay device for single frequency simplex radio system, RoIP technology which is interoperability technology of digital communication was utilized. By implementing software algorithm through combination of DTMF signal of voice signal processing module of RoIP gateway equipment, half-duplex communication through transmission / reception mute function is realized and controlled to be suitable for wireless repeater for single frequency single communication, A high-quality wireless relay system can be constructed. It is also possible to construct a unified communication network with the new digital wireless network.