By Chonggang Wang
The once a year foreign convention on entry Networks (AccessNets) goals to supply a discussion board that brings jointly researchers and scientists from academia in addition to guy- ers and engineers from to fulfill and trade rules and up to date paintings on all facets of entry networks. AccessNets 2008 was once the 3rd version of this occasion, which was once effectively held in Las Vegas, Nevada, united states, in the course of October 15–17, 2008. The convention consisted of 2 keynote addresses, 5 invited talks, seven technical classes, and panel periods. Leonid Kazovsky from Stanford collage and Kevin Schneider, leader expertise Officer of ADTRAN, added their interesting keynote - attire on “Future Evolution of Broadband Access,” and “Carrier Ethernet and the Evo- ing entry Networks,” respectively. Maurice Gagnaire, Martin Reisslein, Martin Maier, Paolo Giacomazzi, and John M. Cioffi gave fascinating invited talks on various examine issues on entry networks. The technical papers awarded unique and primary - seek advances within the sector of entry networks, whereas the panels concerned with the fascinating subject matters of “Fiber Assisted instant for Broadband entry Networks and Dynamic Spectrum administration (DSM) Successes. ” those convention court cases comprise the entire technical papers that have been offered at AccessNets 2008. we are hoping that it'll turn into an invaluable reference for researchers and practitioners operating within the sector of entry networks.
Read or Download Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture Notes ... and Telecommunications Engineering) PDF
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Additional resources for Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture Notes ... and Telecommunications Engineering)
Point Coordination Function (PCF) is another technique that may be used in the MAC layer. In PCF, the data transmission is arbitrated in two modes: (i) centralized mode, where the AP polls each STA in a round-robin fashion, and (ii) contention-based mode, which works similarly to DCF. In addition, the Request To Send (RTS)/Clear To Send (CTS) mechanism is applied to solve the hidden node problem. 16 WiMAX standard was established in the frequency band of 10-66 GHz, providing up to 75 Mbps data rate line-of-sight (LOS) connections in both point-to-multipoint (PMP) and mesh modes.
The FiWi network proposed in  consists of an optical WDM backhaul ring with multiple single-channel or multichannel PONs attached to it, as shown in Fig. 6. An OADM is used to connect the OLT of each PON to the WDM ring. Wireless gateways are used to realize an R&F network that bridges the PONs to a WiFi-based WMN. In the downstream direction, data packets are routed from the CO to the wireless gateways through the optical backhaul and are then forwarded to the MCNs by wireless mesh routers.
An optical wavelength division multiplexing (WDM) ring interconnects the RAUs with the central station where all processing is performed. Each RAU deploys an optical add-drop multiplexer (OADM) ﬁxed tuned to a separate wavelength channel. That is, each RAU is allocated a separate dedicated wavelength channel for transmission and reception to and from the central station. At the central station, a WDM laser generates the desired wavelengths in order to reach the corresponding RAUs. The generated wavelengths are optically switched and passed to an array of RF modulators, one for each RAU.