CCommunity
All the factors such as Bandwidth, free space loss and radiated power affects the Carrier to Noise ratio:
The Carrier to noise ratio is related to the parameters by the equation:
$(\frac{C}{N} = \left( {\frac{{{P_t}{G_t}}}{{k{B_n}}}} \right){\left( {\frac{\lambda }{{4\pi R}}} \right)^2}\left( {\frac{{{G_r}}}{{{T_S}}}} \right))$