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학술지 Effects of Upstream Bit Rate on a Wavelength-Remodulated WDM-PON Based on Manchester or Inverse-Return-to-Zero Coding
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저자
정환석, 김봉규, 김광준
발행일
200804
출처
ETRI Journal, v.30 no.2, pp.255-260
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.08.1107.0032
협약과제
07MT1700, ASON 기반의 메트로 광 회선 분배 기술개발, 김광준
초록
We compare the performance of a wavelength remodulated wavelength-division- multiplexed passive optical network implemented using Manchester-coded or inverse-return-to-zero (IRZ)-coded signal downstream and non-return-to-zero remodulated signal upstream. We investigate the effects of varying differences between downstream and upstream bit rates on the two coding schemes. When the bit rate ratio of upstream to downstream is less than or equal to 50%, the performance of Manchester coding is better than that of IRZ coding. However, when the bit rate ratio of upstream to downstream is higher than 50%, Manchester code requires appropriate time delay between upstream and downstream signals, whereas IRZ code needs reduced extinction ratio in the downstream signal.
키워드
Access network, Centralized light source IRZ, NRZ, Wavelength remodulation, WDM-PON
KSP 제안 키워드
Bit Rate, Centralized light source, Manchester code, Rate ratio, Time Delay, Upstream and downstream, Wavelength-division-multiplexing passive optical network(WDM-PON), access network, extinction ratio, nonreturn-to-zero(NRZ), return-to-zero(RZ)