P
[email protected]
- Jan 1, 1970
- 0
Hi, I want to relate the required SFDR (spurious free
dynamic range) of my Analog to Digital Converter
(ADC) to the required SNR of my system.
For example, if I want to communicate using 6-bit PAM
(64 point constellation) I would need about 40dB SNR
at the receiver. If the entire digital system is perfect
(eg floating point, or perfectly designed fixed point),
there is no receiver noise, and the only impairment
is the imperfect ADC, what SFDR would I need to
guarantee me this 40dB SNR at the decision device?
I understand SNR, but I dont understand SFDR so well.
dynamic range) of my Analog to Digital Converter
(ADC) to the required SNR of my system.
For example, if I want to communicate using 6-bit PAM
(64 point constellation) I would need about 40dB SNR
at the receiver. If the entire digital system is perfect
(eg floating point, or perfectly designed fixed point),
there is no receiver noise, and the only impairment
is the imperfect ADC, what SFDR would I need to
guarantee me this 40dB SNR at the decision device?
I understand SNR, but I dont understand SFDR so well.