railway RRB JE (CBT I + CBT II) Mock Test 2024 Communication Systems Information Theory Channel Capacity
An Ideal power limited communication channel with additive white Gaussian noise with 1 MHz bandwidth and Signal to Noise Ratio of 15 is transmitting the information at the theoretical maximum rate. If the Signal to Noise ratio is reduced to 7, how much bandwidth is required to maintain the same rate:
1
15 / 7 MHz
2
4 / 3 MHz
3
2 MHz
4
None of these