Performance Analysis of WLAN Medium Access Control Protocols in Simulcast Radio-Over-Fiber-Based Distributed Antenna Systems  

作　　者：LI Jianqiang FAN Yuting CHEN Hao LU Xun XU Kun 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876, P.R.China

出　　处：《China Communications》2014年第5期37-48,共12页中国通信（英文版）

基　　金：supported in part by National 973 Program(2012CB315705);NSFC Program(61302086,61271042,61107058, 61302016,and 61335002);Specialized Research Fund for the Doctoral Program of Higher Education(20130005120007);Program for New Century Excellent Talents in University(NCET-13-0682);Fundamental Research Funds for the Central Universities

摘　　要：The performance of three wireless local-area network(WLAN) media access control(MAC) protocols is investigated and compared in the context of simulcast radioover-fiber-based distributed antenna systems(RoF-DASs) where multiple remote antenna units(RAUs) are connected to one access point(AP) with different-length fiber links.The three WLAN MAC protocols under investigation are distributed coordination function(DCF) in basic access mode,DCF in request/clear to send(RTS/CTS) exchange mode,and point coordination function(PCF).In the analysis,the inter-RAU hidden nodes problems and fiber-length difference effect are both taken into account.Results show that adaptive PCF mechanism has better throughput performances than the other two DCF modes,especially when the inserted fiber length is short.The performance of three wireless local-area network（WLAN） media access control（MAC） protocols is investigated and compared in the context of simulcast radioover-fiber-based distributed antenna systems（RoF-DASs） where multiple remote antenna units（RAUs） are connected to one access point（AP） with different-length fiber links.The three WLAN MAC protocols under investigation are distributed coordination function（DCF） in basic access mode,DCF in request/clear to send（RTS/CTS） exchange mode,and point coordination function（PCF）.In the analysis,the inter-RAU hidden nodes problems and fiber-length difference effect are both taken into account.Results show that adaptive PCF mechanism has better throughput performances than the other two DCF modes,especially when the inserted fiber length is short.

关 键 词：radio-over-fiber wireless localarea network distributed antenna systems medium access control simulcast 

分 类 号：TN915.04[电子电信—通信与信息系统] TN911.22[电子电信—信息与通信工程]