matlab code.rar_CSMA/CA_Collision-Avoidance_carrier_csma_sense

# csma_simulation This is a CSMA/CA simulation in MATLAB. I can't find one from the Internet, so I code it on my own. Free free to play with it. Development timeline: 1. 5 slaves talk to master with fixed data size Algorithm:CSMA/CA(Carrier sense multiple access with collision avoidance) - waiting period before sending(check if channel is idle) - collision happend random backoff Simulation:Matlab Version simulation - 8 states in CSMA/CA when will this algorithm fails: - the collision slaves always random backoff for the same amount of time 2. support different data size Algorithm: - add 1 receiving state in the simulation - when only 1 node is sending data trigger receiving states of receiver when will this algorithm fails: - Almost never 3. support priority and prevent low priority slaves from starving Algorithm: - max waiting time before sending depends on the priority, the higher priority the shorter max waiting time - backoff time also depends on priority, the higher priority the shorter max waiting time - to prevent starves low priority slaves, we make all the waiting time as random number from a range