Throughput analysis of a multichannel slotted-ALOHA protocol in short-haul communication environment for an exponential backoff retransmission scheme

The throughput of a multichannel slotted-ALOHA protocol in a short haul communication environment is analyzed for a simple exponential backoff retransmission scheme. For a particular system configuration, i.e. for a particular number of channels and number of stations, parameters may be chosen to have the system normalized throughput almost the same as that of single channel slotted ALOHA. Also the parameters of the protocol may be chosen to have stable system throughput performance over a large range of user numbers. The effect of different parameters on the system capacity are investigated. Simulation results agree with the numerical results.