Analysis performance on contention-based MAC protocols in MANETs

ALOHA protocol and its variations are commonly deployed Medium Access Control (MAC) protocols in environments where multiple transmitting devices compete for a medium. Idealized Slotted ALOHA protocol is the most deploy variation in Mobile Ad Hoc Networks (MANETs) environment for example in digital cellular systems such as GSM, RFID and underwater wireless sensor network. In this research paper, the analysis and studies were made with simulation tools to get an illustration of how the Idealized Slotted ALOHA protocol works and to get mathematical results in graphical form in term of throughput and average time delay. These results are then used to compare with the performances of non-persistent CSMA protocol, another MAC protocol that happened to fell under the same category as ALOHA protocols to prove that Idealized Slotted ALOHA protocol outperforms non-persistent CSMA protocol. However, the throughput of Idealized Slotted ALOHA protocol is improvable with the right approaches. In this research paper, the approaches that are used to improve the performance made primarily are by amending the Idealized Slotted ALOHA protocol with capture effect and by increasing the CNR possibility values.