Performance Analysis of IEEE 802.11 for Collision Detection and Collision Avoidance in Mobile Ad Hoc Network

Packet collisions at the Medium Access Control (MAC) layer in distributed wireless networks use a combination of carrier sensing and collision avoidance. When the collision avoidance strategy fails, such schemes cannot detect collisions and corrupted data frames are still transmitted in their entirety, thereby wasting the channel bandwidth and significantly reducing the network throughput. To address this problem, this paper analyse the wireless MAC protocol CSMA, MACA and IEEE802.11 capable of collision detection and collision avoidance. The performance of the IEEE802.11 protocol has been investigated using extensive analysis and simulations. Our results show that, the protocol IEEE802.11 has significant performance gains in terms of node throughput and reduce the network collisions.