Bit Error Rate和Q factor有什麼關聯?

jelly811737

Bit Error Rate和Q factor有什麼關聯?
4 v0 o3 {: \- j9 ^# h3 [$ M1 d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，
# W+ h7 q4 l8 i% a( E6 X' ]3 Z所以在想BER和Q factor是否有關聯性存在。
安捷倫公司有解釋:
What is Q Factor?

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.
& G5 D, l% R/ G% A3 M$ ~" K3 @6 lQ Factor is a figure of merit often used in optically amplified systems in which noise from the amplifiers dominates receiver noise.
& ^. Q* s0 F* F" |7 vA Q measurement application is included in every N4906A.
2 p8 W" f7 m5 z1 G2 B9 U' Y
4 }/ U" j; x! Y6 G& S  b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。
1 @$ D1 i; d" G. v! r- W( a麻煩各位幫幫我。