內容簡介
本書將下一代廣播電視網(NGB )以及廣電行業最新的“雲”、“管”、“端”網路建設發展理念貫穿始終,全書依託行業發展最新動態,全面詳解了NGB 網的相關技術及
有線電視網案例的設計、工程經驗方法,同時在書中使用大量最新技術圖表,並首次提出了部分技術概念。
全書共分11 章,第1 章講解了現代有線電視網路的發展以及技術演進,系統組成概念、發展趨勢等;第2 章講解了有線電視網路中模擬系統和數字系統的相關基礎知識、系統噪聲、非線性失真和線性失真、數位電視的信道編碼及調製技術、數字有線電視系統的技術指標、數位電視視頻信號受損類型等;第3 章講解了NGB 數字廣播電視平台(含模擬有線電視平台)、數位電視前端軟體平台、NGB 雲平台等技術;第4 章講解了有線網路拓撲、光傳輸網路、接入分配網等技術;第5 章講解了NGB 互動信道數據骨幹網建設、NGB 廣電數據骨幹網、市縣級城域網、NGB 寬頻數據傳輸技術等內容;第6 章講解了EPON 技術、EOC 、DOCSIS 等雙向化改造技術;第7 章講解了IPQAM 原理IPQAM 規劃、配置、部署與擴容等內容;第8 章講解了機頂盒、網元、家庭網關以及智慧型網關等內容;第9 章講解了BOSS 系統、IPCC 系統等內容;第10 章講解了有線電視網路的規劃原則和依據、系統主要內容設計、檔案的編寫準備、前端和機房的設計、骨幹網路設計、接入網路設計等內容;第11 章講解了設計案例的分析、工程經驗與技術創新等內容。
本書可供高等院校電子技術專業、通信專業、廣播電視專業、有線電視工程專業教學使用,也可作為電子工程師繼續教育及電視台技術人員崗位培訓的教材使用,還可供廣播電視、有線電視網路建設和網路維護從業人員閱讀參考。
圖書目錄
第1章 緒論·············································1
1.1
有線電視起源與發展·····················1
1.1.1
共用天線系統···························1
1.1.2
現代有線電視網路的發展·······1
1.2
下一代廣播電視網路(NGB)·····4
1.2.1
1.2.2
有線電視系統分類···················5
1.2.3
傳統有線電視系統···················5
1.2.4
下一代廣播電視網路的發展和構架·······································6
1.2.5
NGB 有線廣播電視網路的兩個信道···································8
1.2.6
NGB 的“雲”、“管”、“端”技術···········································10
1.2.7
NGB 網路總體技術平台及系統···········································11
1.2.8
NGB 相關標準··························11
1.3
基於NGB 三網融合的新業務·······12
DVB+OTT 融合電視業務········12 全媒體互動增值業務···············14 新業態互動電視業務···············15 多網融合新業務·······················16 基於NGB 的多媒體通信業務·17 基於NGB 的物聯網業務·········18
1.4
NGB 網路的頻率劃分和頻率設定18
1.4.1
地面電視廣播的頻道配置和頻頻寬度·······························18
1.4.2
NGB 網路的頻率劃分和頻道配置···········································19
1.5
思考題·············································21
第2 章 有線廣播電視基礎知識·············23
2.1
電平·················································23
2.1.1
分貝比·······································23
2.1.2
電平···········································24
2.1.3
電壓的疊加·······························25
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
2.2
系統噪聲·········································27
2.2.1
系統噪聲的產生和分類············27
2.2.2
熱噪聲·······································27
2.2.3
噪聲係數···································28
2.2.4
信噪比(SNR)和載噪比(CNR)···································29
2.2.5
載噪比計算·······························31
2.3
系統
非線性失真·····························34
2.3.1
非線性失真產物形成原因········34
2.3.2
載波組合二次差拍比(C/CSO)································36
2.3.3
載波組合三次差拍比(C/CTB)································37
2.3.4
信號交流聲比(HM)·············38
2.3.5
交擾調製比(CM)·················39
2.3.6
微分增益失真(DG)··············39
2.3.7
微分相位失真(DP)··············40
2.4
系統線性失真·································40
2.4.1
頻道內頻響·······························40
2.4.2
色度/亮度時延差······················41
2.4.3
回波值·······································41
2.5
信道編碼及調製技術·····················42
2.5.1
信道編碼···································42
2.5.2
差錯控制系統···························43
2.5.3
糾錯碼分類·······························44
2.5.4
數字調製···································46
2.5.5
數位電視信號的調製················49
2.5.6
QAM 調製的星座圖·················49
2.6
數字有線電視的指標·····················52
2.6.1
數字電平···································52
2.6.2
比特誤碼率BER (Bit Error Ratio)····················54
2.6.3
調製誤碼比MER (Modulation Error Ratio)······54
2.6.4
誤差矢量幅值EVM (Error Vector Magnitude)·····55
2.7
系統節目技術質量指標·················56 4.2.4 光發射機···································130
2.7.1
圖像質量···································56 4.2.5
光纖放大器·······························134
2.7.2
聲音質量···································56 4.2.6
光接收機···································139
2.8 思考題·············································56 4.2.7 影響長途光傳輸的因素············141 第3 章 NGB 有線廣播電視技術平台···57 4.3 接入分配網路·································144
4.3.1 同軸電纜···································144
3.1
模擬有線電視平台簡介·················57 4.3.2 放大器·······································149
3.1.1
模擬前端的組成和技術指標···57 4.3.3 分配器·······································152
3.1.2
模擬前端的主要設備···············58 4.3.4 分支器·······································154
3.2
數位電視平台·································61 4.3.5 集中供電器與
電源插入器········157
3.2.1
有線電視數位化·······················61 4.3.6 用戶分配網·······························158
3.2.2
有線數位電視前端系統組成···62 4.3.7 廣播信道綜合技術指標············161
3.2.3
數位電視前端設備···················67 4.4 思考題·············································162
3.2.4
數位電視對NGB 網路的指標新要求·······································72 第5 章 NGB 網路互動信道骨幹傳輸
3.3
數位電視前端軟體平台·················73 與接入·········································163
3.3.1
EPG 系統···································73 5.1 下一代廣播
電視傳輸網·················163
3.3.2
DVB-CA 系統···························83 5.1.1 互動信道數據骨幹網建設········163
3.3.3
DVB-DCAS·······························89 5.1.2 NGB 互動信道骨幹網··············163
3.3.4
SMS 系統··································93 5.1.3 NGB 市縣級城域網··················165
3.4
NGB 雲平台···································94 5.1.4 互動信道接入網························165
3.4.1
雲媒體平台·······························94 5.1.5 有線廣播電視互動信道綜合
3.4.2
雲寬頻平台·······························96 技術指標···································166
3.4.3
雲通訊平台·······························98 5.2 NGB 網路寬頻數據傳輸技術簡介167
3.4.4
雲服務平台·······························103 5.2.1 SDH ···········································167
3.5
NGB 的應急廣播系統···················106 5.2.2 DWDM ······································171
3.5.1
國外的應急廣播體制···············106 5.2.3 ATM ···········································176
3.5.2
我國應急廣播體系建設···········107 5.2.4 MSTP·········································178
3.5.3
縣/市級應急廣播建設模式······108 5.2.5 OTN···········································184
3.6
思考題·············································110 5.3 互動信道骨幹的建設·····················191
第4 章 廣播信道傳輸與接入網·············111 5.3.1 廣電網路現狀···························191
4.1
有線網路拓撲·································111 5.3.2 國家幹線網路···························191
4.1.1
樹枝形
網路拓撲結構···············111 5.3.3 省級幹線網路···························193
4.1.2
星形拓撲結構···························111 5.3.4 OTN 和PTN 在廣電網路中
4.1.3
環形拓撲結構···························112 的套用·······································194
4.1.4
複合型拓撲結構·······················112 5.4 思考題·············································196
4.2
光傳輸網路·····································113 第6 章 廣播電視網路雙向化··················197
4.2.1
光纖與光纜·······························113 6.1 有線接入網路雙向化·····················197
4.2.2
無源光器件·······························124 6.1.1 FTTx 技術·································197
4.2.3
光纖光纜的識別與故障判斷···130 6.1.2 廣播電視網路雙向網改形式····199
6.2
EPON 和GPON ·····························200 7.1.3 IPQAM 演進歷程······················254
6.2.1
PON 技術··································200 7.1.4 TSID 和NID ·····························255
6.2.2
EPON 網路結構························200 7.1.5 IPQAM 原理簡介······················255
6.2.3
EPON 技術優點························202 7.1.6 IPQAM 測試方法及技術要求··256
6.2.4
EPON 傳輸原理························202 7.2 IPQAM 規劃···································260
6.2.5
EPON 協定和關鍵技術············204 7.2.1 業務IP 地址、管理IP 地址的
6.2.6
EPON 可靠性····························211 規劃···········································260
6.2.7
EPON 在有線網路的傳輸方式212 7.2.2 IPQAM RID 規劃······················260
6.2.8
EPON 設計································213 7.2.3 AISP 管理UDP 連線埠、PID 的
6.2.9
廣電與電信EPON 技術要求規劃···········································260 差異···········································219 7.2.4 點播業務UDP 連線埠、PID 的
6.2.10
EPON 與GPON 特點概覽·····219 規劃···········································261
6.2.11
EPON 與GPON 協定比較·····220 7.2.5 小視頻UDP 連線埠、PID 的
6.2.12
EPON 與GPON 關鍵技術規劃···········································261 比較·········································220 7.2.6 網頁信息UDP 連線埠、PID 的
6.2.13
EPON 與GPON 在套用中的規劃···········································261 比較·········································222 7.2.7 主頻點的規劃···························261
6.3
NGB 的建設與HFC 的改造··········223 7.3 IPQAM 配置···································261
6.3.1
HFC 雙向網技術模式···············223 7.3.1 IPQAM 基礎配置······················261
6.3.2
基於DOCSIS 標準雙向網路···223 7.3.2 確定IPQAM 下帶光發機數量·262
6.3.3
EOC 技術概述··························227 7.3.3 確定IPQAM 的數量·················263
6.3.4
HomePlug AV 、C-HPAV 和7.4 IPQAM 部署與擴容·······················263 HomePNA ·································229 7.4.1 IPQAM 部署方式······················263
6.3.5
MOCA、WiFi 降頻以及7.4.2 1550nm 分前端IPQAM 的HiNOC·······································233 部署···········································264
6.3.6
BIOC、ECAN 和DECO··········237 7.4.3 1310nm 光網路IPQAM 擴容···264
6.3.7
EPOC·········································238 7.4.4 1550nm 光網路IPQAM 擴容···265
6.3.8
雙向HFC 網路改造模式技術7.4.5 IPQAM 部署實例分析··············265 分析···········································239 7.5 思考題·············································266
6.3.9
幾種雙向接入形式的比較·······246 第8 章 用戶終端·····································267
6.4
FTTH 建網······································247
6.4.1
FTTH 建網方式························247 8.1 機頂盒·············································267
6.4.2
FTTH 建網技術························249 8.1.1 DVB 機頂盒······························267
6.4.3
FTTH 建網案例························250 8.1.2 OTT 終端···································273
6.5
思考題·············································251 8.1.3 DVB+OTT 融合終端················276
8.1.4 中間件技術·······························277 第7 章 下一代廣播電視網的IPQAM··253 8.2 Cable Modem ··································281
7.1
IPQAM 概述···································253 8.2.1 Cable Modem 工作原理············281
7.1.1
IPQAM 在NGB 網路中的8.2.2 Cable Modem 的分類················282 作用···········································253 8.2.3 Cable Modem 的安裝················283
7.1.2
IPQAM 的優缺點·····················254 8.3 家庭網關·········································284
V
8.3.1
家庭網關概述···························284 9.3.6 外圍設備網管···························306
8.3.2
家庭網關設備演進路線···········285 9.4 綜合網路資源管理系統·················307
8.3.3
家庭網關的功能·······················285 9.4.1 綜合網路資源管理系統定位····307
8.3.4
家庭網關承載的業務···············286 9.4.2 綜合網路資源管理的範圍········308
8.3.5
家庭網關的硬體結構···············287 9.5 思考題·············································308
8.3.6
家庭網關的軟體結構···············287 第10 章有線廣播電視網路設計與規劃309
8.3.7
FTTH+WOC 家庭網關·············287
8.4
智慧型電視·········································288 10.1 有線電視網路的規劃···················309
8.4.1
智慧型電視的系統結構···············288 10.1.1 前期準備·································309
8.4.2
智慧型電視的安全隱患···············290 10.1.2 規劃與設計原則······················311
8.4.3
智慧型電視的發展方向···············290 10.1.3 規劃內容·································311
8.5
雲終端簡介·····································290 10.1.4 網路設計的步驟······················312
8.5.1
全業務數位電視雲終端···········290 10.2 設計方法和依據···························315
8.5.2
8.5.3
基礎數位電視雲終端···············291 主要內容·································315
8.5.4
雲
電腦一體機···························291 10.2.2 有線電視指標分配··················316
8.5.5
雲伴侶·······································291 10.2.3 主要設備符號及設計檔案
8.5.6
移動智慧型終端軟體···················291 編制·········································318
8.6
思考題·············································291 10.2.4 有線電視主要技術標準··········323
10.3 前端和機房的設計·······················325 第9 章 NGB 網路支撐系統···················293 10.3.1 前端設計·································325
9.1
BOSS 系統······································293 10.3.2 機房設計·································326
9.1.1
BOSS 概念································293 10.4 有線電視網路電源設計···············330
9.1.2
三戶模型···································293 10.4.1 電源系統的供電質量··············330
9.1.3
BOSS 系統結構························294 10.4.2 電源供電方式·························331
9.1.4
BOSS 主要功能························295 10.4.3
不間斷電源·····························331
9.1.5
BOSS 的發展前景····················296 10.4.4 應急發電系統·························333
9.2
IPCC 系統·······································297 10.5 NGB 骨幹網路設計······················333
9.2.1
IPCC 概念·································297 10.5.1 NGB 廣播信道骨幹網設計····333
9.2.2
業務套用···································298 10.5.2 NGB 互動信道骨幹網設計····334
9.2.3
架構模式···································299 10.6 接入網路設計·······························337
9.2.4
組建方式···································299 10.6.1 HFC 分配網的設計·················337
9.2.5
系統特點···································300 10.6.2 DOCSIS 技術雙向網路設計··342
9.2.6
線路接入···································302 10.7 防雷與接地設計···························344
9.2.7
典型方案···································302 10.7.1 防雷·········································345
9.3
網路管理系統·································303 10.7.2 禁止·········································351
9.3.1
網路管理功能···························303 10.7.3 接地·········································352
9.3.2
網路管理體系結構···················304 10.8 思考題···········································353
9.3.3
網路管理標準協定···················305 第11 章設計案例與工程創新················355
9.3.4
廣電網路管理系統建設···········305
9.3.5
機房設備網管的技術···············306 11.1 設計案例分析·······························355
11.1.1
NGB 省級數據網路規劃設計355
11.1.2
市縣有線廣播電視城域網······365
11.1.3
小區CMTS+CM 雙向分配網設計·········································368
11.1.4
實驗EPON+EOC 系統設計與調試·········································373
11.1.5
EPON+EOC 改造方案············382
11.2
工程經驗·······································388
11.2.1
機房電源櫃和路邊光電交接箱·········································388
11.2.2
等徑桿的靈活套用·················390
11.2.3
鉗形表的妙用·························392
11.2.4
工程中的接地問題·················393
目 錄
11.2.5 光纜續接包的妙用··················394
11.3 技術創新·······································394
11.3.1
觸點潤滑脂在有線網路接頭工程中套用·····························394
11.3.2
廣播電視寬頻網路雙路供電自動轉換裝置·························397
11.3.3
基於Google Earth 的精確CAD 地圖的勘繪·····························398
11.3.4
無人機房遠程監視與控制······400
11.3.5
11.3.6
EOC 局端批量配置技巧·········404
參考文獻·····················································409