Transponder bandwidth is the product of Modulation , Baud Rate and the Polarisation.

BW=Modulation x Baud x Polarisation

Following table will give an idea for various bit rates:-

Ex:

Modulation = 2 **(bits/s/Hz)**

Baud Rate = 32G

Polarisation= 2

**BW**= 2 x 32 x 2 =**12…**