Question Sir, I will change my FEC rate from 3/4 to 7/8 in a DVBS platform with QPSK modulation over a BW of 9Mhz.
Did I need to increase my U/L power o/p of HPA?
if yes, How can I calculate the additional power requirement?
Answer Hi Mr ND swain,
Simple answer is NO. Technical justification is you will be using lesser information rate for the same bandwidth and may be BER will deteriorate. For more detailed explanation you may please refer my earlier answer to similar question that is in Public Domain (in AllExperts)