Throughput performance of a slotted nonpersistent CSMA with an adaptive array

We propose a slotted nonpersistent CSMA with an adaptive array to improve throughput performance. First, we analyze the performance of the throughput S and the average number of transmissions and schedulings G/S. We also evaluate S and G/S by the computer simulation in order to consider the hidden-terminal problem in the CSMA mode. It is found that the theoretical results of the proposed model agree well with the computer simulated results, and the proposed model attains higher S and smaller G/S than the conventional slotted nonpersistent CSMA. It is also shown that the performance of the proposed model with an adaptive array due to hidden terminals degradation is smaller compared to the conventional CSMA