MBSAs can allow multiple data communications concurrently by constructing spatially separable beams. Using Medium Access Control mechanism their concurrent packet reception capacity can be recognized. We discussed and analyzed to determine the SPR of MBSAs using reactive MAC scheme. We used the both transmitter & receiver initiated MAC schemes for random & uniform nodes distribution. In this paper we provided simulation analysis of one-hop performance about Slotted aloha & CSMAforsmartantennas. Results shows that CSMA provide constant throughput under high traffic loads and losses occur due to beam synchronization. Slotted aloha performed with high peak throughput by number of beams, but performance decreases after the specified load.

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