# Daily Report 4
:::success
### Task 4
## 22nd of July 2021
:::info
**IVC 5G O-RAN Summary**
Physical Channel
Constraints on what kinds of signal can be transmitted
Data rate limits => maximum data rate
- Signal Power
- Noise Power
- Distortion
Without distortion or noise, R will have ꝏ value and the power of error (Pe) approach to 0.
Gaussian Noise Formula :
C= 1/2 B Log ( 1+SNR )
Signal => Continous, Discrete, Complex, Real
Signal’s Characteristic
1. Power
2. Bandwith

:::spoiler Whats’s noise ?
Any unwanted component of signal
a. Internal/ Thermal Noise => Additive (White Gaussian)
b. Distortions
c. External Interface
