Optical Phaselock Receiver with Multigigahertz Signal Bandwidth Indexing Terms. Optical Communications, Optical Receivers, Semiconductor Lasers

Analytic results and conclusion: The throughput of a slotted CSMA is well known to be better than that of unslotted case. C, is always worse than C , because the previous ICMA protocol' is similar to the unslotted CSMA as the ratio of b/a becomes smaller. Both C, and C, of the ICMA scheme will be inferior by 0.368 to the slotted ALOHA, when b / a becomes larger than 6 for C, and 8 for C,, as shown in Fig. 2. Our protocol has the best channel capacity among them. The performance improvement of ICMA and ICMAjCD results from fully utilising the information of the slotted broadcast channel to reduce collisions. We note that the improved performance of our protocol is relatively insensitive to the packet detection delay than the previous protocol.'