Bit Error Rate和Q factor有什麼關聯?

jelly811737

Bit Error Rate和Q factor有什麼關聯?
$ u6 W7 d( ?1 }6 ?, T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，
所以在想BER和Q factor是否有關聯性存在。
安捷倫公司有解釋:
" \4 `- x/ o9 `% d( jWhat is Q Factor?
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Q is a measure of the electrical signal to noise of the system at the receiver decision threshold.
When it is impractical to measure BER with conventional techniques, Q may be used to estimate BER.
1 B5 `  E2 ]/ X3 j5 [: `+ y3 {9 ^Q Factor is a figure of merit often used in optically amplified systems in which noise from the amplifiers dominates receiver noise.
) M: {5 ~5 ^" Y, U! V/ r0 B/ _A Q measurement application is included in every N4906A.
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- G; `' [' j+ `" G# o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。
% O3 F; S; O3 @; i: D" H  n; p, Q麻煩各位幫幫我。