基于IEEE 802.11g的光载无线网络媒体接入控制协议性能分析(英文)

• 作 者: 沈希 徐坤 伍剑 林金桐
• 机 构: State Radio Monitoring Center,State Key Laboratory of Information Photonics and Optical Communicatio
• 出 处: 中国通信
• 发表日期: 2013年01期
• 关键词: 媒体接入控制 IEEE 802.11g throughput 性能分析 DSSS Medium tradeoff payload quickly transmi

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(DSSSOFDM)and Extended Rate PhysicalsOrthogonal 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.

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 (DSSSOFDM) and Extended Rate PhysicalsOrthogonal Frequency Division Multiplexing (ERP -OFDM) physical layers using basic access mode, Request to Send / Clear to Send (RTS / CTS) and CTS-to-self mechanisms. Results show that IEEE 802.11g-over-fiber network employing the ERP-OFDM physical layer is much more than that for employing the DSSS-OFDM physical layer, with respect 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. 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 spec ific parameters.