PON technology

EPON combines both the advantages PON technology and Ethernet technology: low cost;high-bandwidth;strong expansibility,and flexible and rapid restructuring of the service;compatibility with existing Ethernet;convenient management and so on. However,EPON using unicast or multicast is hard to achieve large-capacity transmission of video signals,it is difficult to achieve the system's expansion of video services,thus affect the access of whole business.Lacoste Shirts are waiting for you here! And subcarrier multiplexing can achieve high-capacity broadband optical communication.Therefore,this paper,two types of SCM and EPON technology,using wavelength division multiplexing(WDM) technology werecarried on the different wavelengths.Do you like these polo Shirts?Using1550nm bring down the DVB standard signal,the digital video signal encoded as H.264 video streams,and then using QAM modulate carrier wave,the last was modulated on optical carrier using SCM technology.By means of the WDM,SCM and EPON effective integration of various technologies,the program based on the existing EPON standard achieves gradual expansion,and holds the most simplified optical path,has the feasibility and superiority.I feel the need-the need for cheap Wholesale nike shoes！ In this way,they can transmit large capacity of video signal,the changes on the network is also very small,very convenient and can easily access a variety of interactive multimedia services.On this base of technology,this paper proposes a bandwidth allocation algorithm,on the distribution project which combine unicast and broadcast,analyse the system performance via software,based on SCM / Ethernet PON,make use of two kinds of Video-On-Demand which are NVOD and VOD,and the advantage of two kinds of video-on-demand business which are DVB and IPTV, improve the largest number of concurrent video-on-demand which the network system supports by a certain algorithm,reduce the average waiting time,minimize bandwidth resources,provide video-on-demand services for a large number of users. Combines the advantage of the merits of two types of technology carrying video. Through the rational allocation of bandwidth maximize the use of bandwidth resources, provide users with higher bandwidth.Finally,With the Method of the scheduling of the bandwidth,provide better services to users.Finally this paper,in the conditions of FTTH access,we bring forward an design of integrated access gateway,it can realizes the integrated access of VoIP voice service, internet data services and video services.PAS6301 chip achieves the control of voice, video and data services
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