Question

difference between pure aloha and sloted aloha

Answer 1

Pure ALOHA : 
1. Pure ALOHA do not requried global time synchronization.

2. Pure ALOHA station can send data in continous time manner.

3. It allow the user whenever they have data..

4. Vulnerable time for the pure ALOHA is  2x Tfr.

5. The average sucessful transmission for  pure ALOHA is 
G * exp(-2G).

6. The max throughput is 0.184 when G=1/2.

Slotte ALOHA :
1. the does requried the global time synchr.

2. It devide the time in slot.

3. It do not allow the user whenever they have data..

4. vulnerable time  is Tfr.

5. The average sucessful transmission for Slotted ALOHA 
S =  G * exp(-G).

6.The max throughput is  .368 when G= 1.