A discrete memory less channel is shown in Figure P6.51.
![161_3b96fcd4-b2a1-400d-8863-50ae1478b97e.png](https://secure.tutorsglobe.com/CMSImages/161_3b96fcd4-b2a1-400d-8863-50ae1478b97e.png)
1. Determine the capacity of this channel.
2. Determine R0 for this channel.
3. If a discrete-time memory less Gaussian source with a variance of 4 is to be transmitted by this channel, and for each source output, two uses of channel are allowed, what is the absolute minimum to the achievable squared-error distortion?