The required DTTB Transmitter C/N
Considering :
- (A) @ 35dB required decode C/N, an influence of 1dB by the Transmitted C/N is acceptable. (as such high C/N will not be common the high 1dB influence maybe acceptable)
- (B) @ 25dB required decode C/N, an influence of 0.2dB by the Transmitted C/N is acceptable. (as a 25dB decoder C/N requirement will be potentially common a small influence is demanded)
The Transmitted C/N needs to be :
- for (A) 41dB for (B) 38dB
- Hence 41dB Transmitted C/N appears to be indicated.