Bit Error Rate和Q factor有什麼關聯?

jelly811737

Bit Error Rate和Q factor有什麼關聯?
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，
7 S% F; W+ l+ F. @5 @# ]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?
: w0 T; h; j$ {8 |- i0 {
4 Y4 f3 t) n' ?2 B0 {8 nQ is a measure of the electrical signal to noise of the system at the receiver decision threshold.
/ g6 t$ H/ @/ k, t+ ^5 h  {( tWhen it is impractical to measure BER with conventional techniques, Q may be used to estimate BER.
Q Factor is a figure of merit often used in optically amplified systems in which noise from the amplifiers dominates receiver noise.
A Q measurement application is included in every N4906A.

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。
/ e8 s0 k3 K2 H: J3 e麻煩各位幫幫我。