標題: Bit Error Rate和Q factor有什麼關聯? [打印本頁] 作者: jelly811737 時間: 2008-1-23 02:27 PM 標題: Bit Error Rate和Q factor有什麼關聯? Bit Error Rate和Q factor有什麼關聯? ) m$ f. g+ p) B5 u由於在安捷倫示波器量測眼圖時發現有量測Q factor這個功能，: t: k( D7 P0 ]5 Q: Z
所以在想BER和Q factor是否有關聯性存在。7 O$ Z: ~, c! w8 j- H/ B
安捷倫公司有解釋:4 g% G- S' H4 `
What is Q Factor? 5 [, ~4 a" [( Q$ X& S
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Q is a measure of the electrical signal to noise of the system at the receiver decision threshold. , H* V. t& f) f9 b" xWhen it is impractical to measure BER with conventional techniques, Q may be used to estimate BER. 4 t7 Q7 u" [8 U* y0 E& y
Q Factor is a figure of merit often used in optically amplified systems in which noise from the amplifiers dominates receiver noise. # x" Q% C, q' A: ^8 Q: b/ zA Q measurement application is included in every N4906A. + L+ Y' D5 K4 n$ O 8 E, R2 _& u: C" u: _! d. d想請問各位先進是否知道有BER和Q factor的轉換方程式，或是其他相關資料。 & A* u2 g2 U! j* `: F2 e麻煩各位幫幫我。