OFDMA-PON 시스템에서 OFDM 광모뎀의 변조 방법 최적화
조승현, 이지현, 명승일, 정의석, 김광옥, 이상수, 이종현
- 9130675 (2015.09.08)
- A modulation method of an optical modem and a signal transmission apparatus performing the method are disclosed. The modulation method of the optical modem includes an optical interface providing a signal to a light source, a photo detector receiving reflected light by an optical link when output light from the light source based on the provided signal is reflected by the optical link, the photo detector measuring and determining characteristics of the optical link using the reflected light, and the optical modem determining a power level and a modulation method for each subcarrier based on the characteristics of the optical link.
- KSP 제안 키워드
- Light sources, Modulation method, OFDMA-PON, Optical Modem, Optical interface, Power Levels, Reflected light, Signal transmission, optical link, photo detector