Throughput analysis and protocol design for CSMA and BTMA protocols under noisy environments
J.-H. Huang, Leonard Kleinrock · IEE Proceedings I Communications Speech and Vision · 1992
In using a CSMA (Carrier-Sense Multi-Access) protocol in a packet radio network, we cannot ignore the probability that the environment is so noisy that the channel state is misdetected. Similarly, with a BTMA (Busy-Tone Multi-Access) protocol, we must take into account the probability of misdetecting the busy or idle state of the channel. The paper focuses on these problems and tries to evaluate the throughput performance inppersistent access schemes, using an iterative approximation method. Furthermore, new protocol is suggested, which can effectively cope with the imperfect sensing property to achieve an improved throughput by sensing the channel in several consecutive slots.