电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2014年
8期
1152-1155
,共4页
射频光网络单元%光突发模式%同步传输%时分复用
射頻光網絡單元%光突髮模式%同步傳輸%時分複用
사빈광망락단원%광돌발모식%동보전수%시분복용
RF ONU%optical burst mode%synchronous transmission%time division multiplexing
RFoG技术在HFC网络双向改造中存在明显的优势,越来越多的运营商采用RFoG组网方案,但是RFoG的射频光网络单元由于光突发模式采用电平控制ONU的开通与关断,造成实现困难。为此,给出了一种基于同步传输的射频光网络单元设计方法,将回传信号数字化,采用和CMTS相同的时分复用技术( TDMA)来控制ONU反向光发射的“突发”,从而达到在任一给定的时点只允许一个ONU与CMTS头端保持通信,以弥补其不足。
RFoG技術在HFC網絡雙嚮改造中存在明顯的優勢,越來越多的運營商採用RFoG組網方案,但是RFoG的射頻光網絡單元由于光突髮模式採用電平控製ONU的開通與關斷,造成實現睏難。為此,給齣瞭一種基于同步傳輸的射頻光網絡單元設計方法,將迴傳信號數字化,採用和CMTS相同的時分複用技術( TDMA)來控製ONU反嚮光髮射的“突髮”,從而達到在任一給定的時點隻允許一箇ONU與CMTS頭耑保持通信,以瀰補其不足。
RFoG기술재HFC망락쌍향개조중존재명현적우세,월래월다적운영상채용RFoG조망방안,단시RFoG적사빈광망락단원유우광돌발모식채용전평공제ONU적개통여관단,조성실현곤난。위차,급출료일충기우동보전수적사빈광망락단원설계방법,장회전신호수자화,채용화CMTS상동적시분복용기술( TDMA)래공제ONU반향광발사적“돌발”,종이체도재임일급정적시점지윤허일개ONU여CMTS두단보지통신,이미보기불족。
RFoG technology has obvious advantages in HFC network two-way reform and more and more operators use RFoG networking scheme,but it is difficult to realize RFoG optical network unit( ONU) be-cause light burst mode uses level to control the ONU on and off. This paper presents a method of designing RF ONU based on synchronous transmission. The signal is digitized and time division multiplexing( TDMA) technology is adopted to control the "burst" from ONU reverse light,so as to achieve the goal that at any given time,only one ONU and CMTS head end is allowed to keep communication.