Abstract
We analyzed of the receiver which received OOK and the FSK transmission signal that were a general digital transmission technique in a WDM system. We expressed various error probability with the m which was bandwidth and a bit numerical function and carried out performance evaluation of a receiver in a performance evaluation way. When error probability was $10^{-4}$ which is m=10, as for the receive sensitivity of OOK, the $1.7{\times}10^2$, FSK got $2.2{\times}10^2$ through simulation. And the receive sensitivity of OOK and FSK was able to get each $2.15{\times}10^2$ and $3.07{\times}10^2$ when it was error probability of $10^{-9}$ which is m = 25. Transmission of 23Gb/S showed that it was possible when we does the $10^{-9}$ that was basis error probability of a light communication system with a basis through this, and a coding profit was with for and transmission capacity of 75Gb/s confirmed that it was possible if a code rate was with 0.8.
WDM 시스템에서 일반적인 디지털 전송기법인 OOK와 FSK 전송신호를 수신하는 수신기를 해석하였다. 성능평가 방법으로는 다양한 에러확률을 대역폭과 비트수의 함수인 m으로 표현하여 수신기의 성능평가를 수행하였다. 시뮬레이션 결과, $10^{-4}$의 에러확률인 m=10 인 경우 OOK 신호에 대한 수신감도는 $1.7{\times}10^2$, FSK의 경우는 $2.2{\times}10^2$, 그리고 $10^{-9}$의 에러확률인 m=25의 경우, OOK와 FSK의 경우 각각 $2.15{\times}10^2$, $3.07{\times}10^2$의 성능을 갖는 것으로 확인되었다. 이를 통해, 광통신 시스템의 기준에러확률인 $10^{-9}$을 기준으로 할 때, 23Gb/S의 전송이 가능함을 보였고, 코딩이득이 $10^{8}$이고, 코드율이 0.8인 경우에는 75Gb/s의 전송용량이 가능함을 확인하였다.