상세정보
학술대회
Analog Predistortion Technique in Remodulation based Radio over High-speed Access Network for Improving Sensitivity
- 발행일
- 201110
- 출처
- International Topical Meeting on Microwave Photonics (MWP) / Asia-Pacific Microwave Photonics Conference (APMP) 2011, pp.339-342
- 협약과제
- 11MI1900, 차세대 이동통신 기지국용 Class-S 전력증폭기 기술 연구, 정재호
- 초록
- We demonstrate an RSOA-based WDM-PON using a spectrally distorted 622-Mbps Sub-carrier Multiplexing (SCM) signal at 1200-MHz for downstream and a 622-Mbps Non Return to Zero (NRZ) signal for upstream. Even though the overall transmission bandwidth for the SCM signal with transceivers originally for 1.25-Gbps is only 810-MHz, a clear eye opening can be obtained using a spectral predistortion technique to compensate the signal quality deterioration above 810-MHz. With the predistorter, downstream signal sensitivity is improved up to 1.4-dB, leading to a wider range of the optical modulation index of the downstream SCM signal. © 2011 IEEE.
- KSP 제안 키워드
- Analog predistortion technique, High Speed, Modulation Index, Signal quality, Wavelength-division-multiplexing passive optical network(WDM-PON), access network, eye opening, nonreturn-to-zero(NRZ), optical modulation, quality deterioration, return-to-zero(RZ)