a).Baseband demodulation system in digital communication largely depends on the Eb/No ratio. Whether it is possible to have two digital communication systems with same Eb/No but with different S/N ratio? Justify your answer with suitable explanations.

b). A channel is providing as S/N ratio of 1000. When the bandwidth of signal is 10 KHz, the value of Eb/No is found to be 500. If same channel is used with same signal bandwidth but with a different data rate. It is observed that the new Eb/No is reduced by 75%. Calculate the new value of E /No and data rate.