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Performance analysis of Medium Access Control protocol for IEEE 802.11g-over-fiber networks

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4 Author(s)
Shen Xi ; State Radio Monitoring Center, Beijing, China ; Xu Kun ; Wu Jian ; Lin Jintong

This paper investigates the Medium Access Control (MAC) protocol performance in the IEEE 802.11g-over-fiber network for different payloads and fiber lengths using Direct Sequence Spread Spectrum-Orthogonal Frequency Division Multiplexing (DSSS-OFDM) and Extended Rate Physicals-Orthogonal Frequency Division Multiplexing (ERP-OFDM) physical layers using basic access mode, Request to Send/Clear to Send (RTS/CTS) and CTS-to-self mechanisms. The results show that IEEE 802.11g-over-fiber network employing the ERP-OFDM physical layer is much more efficient than that employing the DSSS-OFDM physical layer, with regards to both throughput and delay. For a given maximum throughput/minimum delay, the tradeoff among the access mechanism, the fiber length, and the payload size must be considered. Our quantified results give a selection basis for the operators to quickly select suitable IEEE 802.11g physical layers and the different access mechanisms, and accurately predict the data throughput and delay given the specific parameters.

Published in:

Communications, China  (Volume:10 ,  Issue: 1 )