CENTRAL OFFICE DEVICE, REMOTE SITE DEVICE, AND COMMUNICATION METHOD THOSEOF

摘要

The present invention relates to a central office device, a remote site device, and a communication method thereof that can be used in a radio over fiber (RoF) technique. Provided are a central office device and a communication method thereof that convert an analog signal into a signal having a carrier with an intermediate frequency and converts the converted signal into a digital signal to transmit the converted digital signal to a remote site device. Provided are a remote site device and a communication method thereof that filter a digital signal having a carrier with an intermediate frequency to easily induce a corresponding analog signal.

主权项

1. A central office device comprising:
a signal conversion module converting an input signal into an analog signal having a carrier with an intermediate frequency (IF); a modulation module generating a digital signal corresponding to the analog signal by applying pulse density modulation to the analog signal; and a transmission module transmitting the digital signal to a remote site device through a channel.