51. FA Frequency ceev
Ua rau lub peev xwm ntawm txoj kev xa khoom xa mus rau kev cia siab kom yoog tau yoog ib puag ncig raws li kev hloov pauv ntawm cov xwm txheej sab nraud.
52. CSMF Cov Hom Ib Leeg Fiber
Ib hom fiber ntau uas ua tau raws li qhov yuav tsum tau ntawm ITU-TG652, feem ntau hu ua cov hluav taws xob tsis-tawg kev hloov pauv, muaj xoom dispersion nyob hauv thaj av qis-poob ntawm 1.3um qhov rais thiab ua haujlwm ntawm lub nthwv dej ntawm 1310 nm ( poob txog 0.36 dB / km). Nrog txoj kev vam meej ua tiav ntawm kev ua lag luam fiber ntau cable thiab semiconductor laser technology, kev khiav hauj lwm wavelength ntawm cov kab fiber ntau tuaj yeem pauv mus rau qhov kev poob qis (0.22 dB / km) 1550 nm fiber ntau qhov rai.
53. DSF Kev Tuav Pov Tseg-Hloov Hloov Fiber
Ib hom fiber ntau uas ua tau raws li qhov yuav tsum tau ntawm ITU-T G.653 muaj qhov xoom-kev tawg nthwv dej hloov mus rau qhov kev poob qis heev ntawm 1550 nm.
54. GE Gigabit Ethernet
Gigabit Ethernet tus qauv tau pib ua tiav thaum Lub Kaum Hlis 1997 nrog tus nqi hloov siab tshaj plaws ntawm 1 Gbps thiab rov qab tau tshaj nrog Ethernet technology thiab Fast Ethernet technology.
55. GIF Qib Qib Fiber
Lub teeb mus ncig hauv cov duab sinusoidal nrog cov kab nrig ntawm 1-2 GHz.km, uas yog siv rau qee qhov LAN uas tsis nrawm dua.
56. GS-EDFA Tau Txais Kev Pauv Hloov Erbium-doped Fiber Amplifier
Los ntawm kev tswj cov neeg kawm ntawv qib siab ntawm kev hloov pauv ntawm cov doped fiber, 1570-1600 nm band tau nthuav dav, thiab nws tuaj yeem ua ke nrog ib qho EDFA kom tau txais qhov dav dav amplifier muaj bandwidth ntawm txog 80 nm.
57. GVD Pab Pawg Sib Tw Tawm Tshiab
Hauv kev kub ceev thiab loj-muaj peev xwm sib txuas lus kho qhov muag fiber ntau, cov duab ntawm lub hnab ntawv kho qhov muag mem tes hloov pauv vim tsis muaj qhov tsis zoo ntawm qhov nruab nrab fiber kho qhov muag. Qhov kev hloov pauv no cuam tshuam rau kev txais tos ntawm lub teeb liab kho qhov muag yog hu ua pab pawg tshaj tawm kev tawg, thiab cov pab pawg tawm suab nrawm ua rau kis cov xov hluav taws xob. Tshaj tawm. G.654 Txiav ntuag wavelength hloov ib hom fiber ntau Qhov no ua kom pom tseeb ntawm fiber ntau tsim cov kev txiav txim siab yog kom txo tus nqi 1550nm. Qhov qov dispersion kis nyob ib puag ncig 1310nm, yog li cov kev faib tawm ntawm 1550nm yog siab dua, uas tuaj yeem loj dua 18ps / (nm.km). Ib qho ntev ntev hom laser tuaj yeem siv los tshem tawm cov txiaj ntsig ntawm kev tawg. Nws yog tsuas yog siv rau submarine kev sib txuas lus fiber ntau nrog kev sib raug zoo ntev.
58. HPF Siab Dhau Lim
Nws yog cov lim uas tso cai rau xov tooj cua tsis dhau ib lub zog dhau los yuav luag dhau ntawm qhov tsis muaj ntsej muag, thaum lwm nthwv dej hauv qab ntawm qhov xov tooj ntau dhau los ua ke.
59. HRDS Hypothetical Reference Digital Section
Nws yog ib hom qauv degree nrog qee qhov ntev thiab kev ua haujlwm tshwj xeeb, uas tuaj yeem siv los ua tus qauv siv rau kev ntsuas kev faib tawm. Rau SDH tus lej naj npawb, muaj peb qhov ntev ntawm 420km, 280km thiab 50km.
60. IDLC Sib Nraus DLC
Broadband nquag kho qhov muag network, piv txwv li Digital Digital Loop Carrier System (IDLC) yog cov khoom siv sib kis tau raws li SDH lossis PDH, uas tuaj yeem muab PSTN, ISDN, B-ISDN, DDN, LANE, Internet thiab digital video pabcuam rau cov chaw nruab nrab. Kev nkag mus los kuj tseem yog txoj hauv kev zoo rau kev nkag mus rau broadband thiab muaj qhov zoo rau kev tsim kho.
61. IDEN Sib Koom Tes Digital Sib Txuas Ntxiv
Qhov system iDEN tau qhia nyob rau hauv Los Angeles xyoo 1994. Nws yog ib pawg digital kaw lus tau npaj los ntawm Motorola. Nws ua haujlwm nyob rau hauv 800MHz ntau zaus. Tom qab li peb xyoos ntawm kev nce qib, nws tau muab tso rau hauv cov ntawv thov kev lag luam hauv 13 lub tebchaws hauv North America, South America thiab Asia. Nws lub ntsiab tseem ceeb yog tias nws tuaj yeem sib haum nrog GSM, haum rau cov network loj thiab ntau haum rau PAMR daim ntaub ntawv.
62. IEEE 802.3
CSMA / CD LAN, tus qauv Ethernet.
63. IEEE 802.11
Lub wireless LAN technology txheem tshaj tawm nyob rau xyoo 1997, IEEE 802.11 qhov tshwj xeeb txhais tau peb txheej txheej ntawm lub cev (PHY) kev xaiv: infrared, ncaj qha sib tshooj kis spectrum (DSSS), thiab zaus hla kev sib kis spectrum (FHSS). Txij li cov wireless LAN kis tau nruab nrab (microwave, infrared) muaj qhov sib txawv ntawm cov xov tooj wired, muaj qee cov teeb meem kev qhia tshiab teeb meem. Vim li no, IEEE802.11 raws tu qauv qhia qee qhov tseem ceeb rau kev siv tshuab xws li CSMA / CA raws tu qauv, RTS / CTS raws tu qauv, thiab lwm yam. Lub Yim Hli 1999, 802.11 tus qauv tau muab kho ntxiv thiab kho dua tshiab. Ob lub ntsiab lus tshiab, 802.11a thiab 802.11b, tau ntxiv, uas tau nthuav dav cov qauv txheej txheem lub cev thiab MAC txheej specifications.
64. Jitter
Ib qho ntawm kev sib kis tseem ceeb ntawm SDH optical kis network yog txhais tau tias kev sib txawv luv luv ntawm lub sijhawm muaj txiaj ntsig ntawm lub teeb liab digital los ntawm theoretical teev lub sijhawm ua haujlwm.
65. K Band K
10G-12G rau kev sib txuas lus satellite.
66. Ku Band Ku
12G-14G rau kev sib txuas lus ntau lub hnub qub.
67. LA Kab Amplifier
Tus kho qhov muag tawm suab uas them rau kom muaj qhov ploj fiber ntau ntawm cov kab ntoo.
68. LEAF Caj Npab Loj Hauv Cheeb Tsam Fiber
Ib qho-hom tsis yog xoom dispersion-hloov hluav taws xob, ua haujlwm hauv 1550nm qhov rai; piv nrog cov qauv tsis-xoom dispersion-hloov pauv fiber ntau, nws muaj qhov loj dua "thaj chaw zoo" thiab thaj chaw zoo tau nce mus txog 72um2 lossis ntau dua, yog li lub zog loj loj muaj peev xwm loj. Rau kev siv ntawm siab zog tso zis doped fiber amplifiers, namely EDFA thiab ntom ntom ntom ntom ntom ntom ntom ntom cov sib txuas nrog cov cuab yeej ua ke.
69. LANE LAN Cuav
Thaum ATM hloov pauv pauv nrog Ethernet, yuav tsum ua cov txheej txheem sim rau cov ATM ATM.
70. LMDS Kev Pabcuam Ntau Tshaj Plaws Hauv Zos
Ib qhov chaw nrov dav dav siv wireless nkag tau uas siv cov kev sib kis spectrum thiab polarization. Qhov chaw nres tsheb puag ncig kwv yees li 2-10 KM thiab tuaj yeem muab tau li 4.8 G ntawm bandwidth. Haum rau kev nkag mus rau wireless hauv thaj chaw uas muaj neeg nyob tuab heev.
71. LOF Poob Ncej
Tom qab lub thav duab tawm-ntawm-synchronization xeev kav rau 3 ms, SDH ntaus ntawv yuav tsum nkag mus rau hauv cov kab xwm poob lub xeev; thiab thaum lub teeb liab STM-N tsis tu ncua nyob rau hauv cov chaw ruaj khov lub xeev rau tsawg kawg 1 ms, SDH ntaus ntawv yuav tsum tawm ntawm cov kab xwm poob lub xeev.
72. LOS SIS Cov cim tsis muaj npe
Thaum lub teeb tsa hluav taws xob tau txais hluav taws xob yog ib txwm qis dua qee qhov pib ntawm tus nqi Pd (Pd sib raug rau BER ≥ 10-3) rau lub sijhawm (10 peb lossis ntev dua), cov cuab yeej nkag los hauv LOS xeev.
73. LOP Tso Dab Tso Taw
Thaum tsis muaj qhov taw tes siv tau rau 8 ntas sib law liag, lossis 8 tus tshiab sib law liag ntawm cov ntaub ntawv tshiab (NDF) tau qhib, lub cuab yeej yuav tsum nkag mus rau LOP lub xeev; thiab thaum 3 sib law liag raug cai lossis cov cim taw qhia uas muaj NDF ib txwm muaj. Cov cuab yeej no yuav tsum tawm ntawm LOP lub xeev.
74. MI Hloov Kho Instability
Modulation instability tsis muaj kev cuam tshuam txog kev nruam nthwv dej txuas ntxiv (CW) teeb liab lossis cov mem tes, uas ua rau lawv hloov hom. Ib qho teeb liab quasi-monochromatic nthawv ua ob qho tsis sib xws ntawm ob sab. Qhov tshwm sim no tuaj yeem pom hauv thaj chaw saum toj ntawm lub xoom dispersion wavelength.
75. MLCM Ntau Qhov Qib Caws Qib
Ib txoj hauv kev cov txheej txheem thev naus laus zis tuaj yeem raug suav tias yog kev rho tawm trellis coded 64QAM hom. Lub tswv yim tsim yog tib yam li TCM, uas coj cov kev txiav txim siab tsim tawm los ntawm kev ua txhaum kev txhim kho cov cim rau feem ntau cov cim kev ua yuam kev los ua kom cov coding redundancy.
76. MMF Ntau Hom Fiber Ntau
Ob lossis ntau hom qauv ntawm cov fiber ntau tuaj yeem nthuav tawm ntawm lub nthwv dej uas txiav txim siab.
77. MMDS Kev Sib Tw Tham Ntau Dua Ntau
Feem ntau xa mus rau lub xov tooj wireless, wireless system feem ntau siv los xa cov duab tsheb.
78. MVDS Ntau Tshaj Video Muab Kev Pabcuam
Lub tshuab hluav taws xob hauv cheeb tsam wireless hauv tebchaws Askiv tau tsim, tau khiav ntawm 40.5G rau 42.5G, nws yog qhov zoo sib xws rau LMDS, tab sis feem ntau yog siv hauv video hauv kev thov cov kev pabcuam.
79. MQAM Quadrature Amplitude tes taws los piav
Multi-ary quadrature amplitude modulation yog cov khoom siv tswj kev siv dav dav hauv nruab nrab thiab loj-muaj peev xwm digital microwave kev sib txuas lus. Hom no muaj qhov siab ntawm cov txiaj ntsig siv cov txiaj ntsig. Thaum cov lej tes taws los ua ntau ntau, qhov faib ntawm cov teeb liab vector teeb kuj tseem ceeb, thiab nws kuj yooj yim rau kev coj ua. Tam sim no, 64QAM, 128QAM, thiab lwm yam, uas siv dav hauv qhov loj-muaj peev xwm sib txuas lus digital microwave kev sib txuas lus xws li SDH digital microwave thiab LMDS, koom nrog hom kev hloov kho no.
80. MSOH Multiplex Seem Txawv Nyiaj
Lub luag haujlwm tswj hwm cov seem seem, uas tsuas yog tuaj yeem nkag mus rau ntawm cov khoom siv davhlau ya nyob twg.
81. MSP Multiplexer Tshooj Tiv Thaiv
Cov txheej txheem tiv thaiv rau SDH optical fiber sib txuas lus, cov kev pabcuam ntim kev tiv thaiv yog ua raws seem, thiab qhov hloov mus txiav txim siab raws li kev ua haujlwm ntawm multiplex ntu teeb liab ntawm txhua tus ntawm. Thaum multiplex seem tsis ua haujlwm, qhov seem kev pabcuam multiplex ntawm cov cim ntawm tag nrho cov ntshav tig mus rau hauv ntu kev tiv thaiv.
82. MZ Mach-Zehnder
Cov kho hluav taws xob txiav tawm lub teeb nkag mus rau hauv ob qho kev sib txig sib luag rau ob lub tuam txhab ua qhov zoo. Cov ntaub ntawv siv hauv ob lub ceg xa hluav taws xob no yog cov khoom siv hluav taws xob zoo uas nws qhov ntsuas tsis tau yooj yim nws txawv nrog qhov ntau ntawm sab nraud thov hluav taws xob. Txij li qhov ntsuas qhov hloov pauv ntawm cov ceg hluav taws xob tau ua rau muaj kev hloov pauv hauv theem ntawm lub teeb liab, thaum cov zis tawm ntawm ob ceg teeb liab cov qauv hluav taws xob tau sib txuas ntxiv, cov teeb meem hluav taws xob sib txuas ua ke yuav yog lub teeb liab cuam tshuam ntawm kev sib txawv, sib npaug rau hluav taws xob teeb liab. Qhov kev hloov pauv tau hloov pauv mus ua kev hloov pauv ntawm lub teeb liab kho qhov muag, thiab kev hloov kho ntawm lub teeb nrig tau ua tiav.
83. NA Siv Yis Hwj Huaj
Nws qhia txog kev muaj peev xwm ntawm cov fiber ntau kom tau txais thiab kis teeb ci. Qhov loj dua ntawm NA, lub zog muaj peev xwm ntawm txoj kab hluav taws xob tau txais lub teeb, thiab qhov siab dua ntawm kev sib txuam los ntawm qhov chaw mus rau fiber.
84. NC Network Txuas
Network sib txuas yog cascaded los ntawm subnet sib txuas thiab / lossis cov ntawv sib txuas sib txuas thiab tuaj yeem pom raws li qhov sawv cev tsis paub ntawm lub chaw ntiag tug no. Nws tau txais cov ntaub ntawv kawg-rau-kawg ntawm cov txheej txheej network, txiav tawm los ntawm cov davhlau ya nyob twg txuas (TCP).
85. NEL Network Tawb Txheej
Qhov txheej txheem kev tswj hwm theem pib yog lub luag haujlwm rau kev tswj hwm kev teeb tsa, kev ua txhaum, thiab kev ua haujlwm ntawm lub network nkaus.
86. NML Network Tswj Txheej
Tswj, saib xyuas, thiab tswj hwm qhov chaw sib txuas ntawm cov tuam ntxhab sib txawv.
N87. E Network Nkaus
Chav ntsuas pib uas suav ua lub network.
88. NZDSF Tsis Muaj Qhov Xaus Kev Hloov Thooj Quav Tsis Sib Hlav
Ib hom fiber ntau uas ua raws li ITU-TG655 qhov yuav tsum yog kev sib kis-hloov pauv fiber ntau, tab sis cov dispersion tsis yog xoom ntawm 1550 nm (raws li ITU-TG655, dispersion tus nqi nyob rau hauv thaj tsam ntawm 1530-1565 nm yog 0.1-6.0 ps / nm. Km) sib npaug rau cov kev tshwm sim tsis xws li plaub-sib xyaw. Kev ua lag luam yog zoo li TrueWave fiber los ntawm AT& T, Corning SMF-LS fiber ntau (uas muaj qhov ntev ntawm kev tawg nthwv dej ntawm 1567.5 nm, ib txwm muaj pes tsawg tawg ntawm 0.07 ps / nm2.km) thiab Corning's LEAF fiber.
89. NNI Network Node Sib Pauv
Nws tuaj yeem yog qhov yooj yim ntawm qhov uas tsuas muaj ntau txoj kev ua haujlwm, lossis txoj haujlwm yooj yim uas muaj kev sib kis, sib txuas sib luag, sib txuas sib txuas, thiab hloov lub luag haujlwm.
90. OADM Optical Ntxiv Poob Ntau Tus Ntaus
Nws txoj haujlwm yog xaiv cov cim kho qhov muag los ntawm lub tshuab xa mus rau lub zos kho qhov muag teeb liab, thiab xa cov teeb liab kho qhov muag ntawm cov neeg siv hauv zos rau tus neeg siv ntawm lwm qhov txuas yam tsis muaj kev cuam tshuam cov kis ntawm lwm cov kab hluav taws xob, uas yog hais, OADM yog tau pom nyob rau hauv lub kho qhov muag sau. Kev ua haujlwm ntawm qhov hluav taws xob ntxiv / poob multiplexer hauv tsoos SDH ntaus hauv lub sij hawm sau.
91. OA& M Kev Ua Haujlwm, Kev tswj hwm thiab txij nkawm
Cov txheej txheem ntawm cov kev tswj hwm hauv network rau kev soj ntsuam xyuas lub network, kev ua haujlwm tsis zoo, thiab kev paub daws teeb meem thiab kev tiv thaiv.
92. OFA Optical Fiber Amplifier
Nws yog hais txog qhov tshiab txhua qhov kev tawm suab siv hauv cov kab hluav taws xob sib txuas lus kom ua tiav lub teeb liab. Raws li nws txoj haujlwm thiab lub luag haujlwm hauv cov kab fiber ntau, feem ntau muab faib ua relay amplification, preamplification thiab hloov kho lub zog.
93. ODN Optical Distribution Network
Kho qhov muag faib network, muaj cov khoom lag luam passive kho qhov muag
94. OAN Optical Access Network
Nkag mus rau lub thev naus laus zis sib txuas ntawm kev xa khoom kho qhov muag
95. OBD Optical Ceg Txheem Txuas Kev Sib Tw Kho Kom Zoo Nkauj Kev Sib Tw
Passive optical power splitter (coupler) uas faib cov teeb liab downlink thiab khub niam txiv cov teeb liab ntws los
96. OLT Optical Line Terminal
Muab cov interface ntawm cov network sab thiab lub zos hloov chaw, thiab txuas ib lossis ntau dua ODN / ODT kom sib txuas lus nrog ONUs ntawm tus neeg siv sab.
97. ONU Optical Network Unit
Muab cov neeg siv khoom siv sab sib tshuam rau lub network kho qhov muag thiab tau txuas nrog rau ODN / ODT.
98. OFS Tawm Thib Ob
Qhov thib ob nrog ib lossis ntau OOF cov xwm txheej yog hu ua OFS.
99. OM Optical Multiplex
Ntau qhov ntau ntawm lub ntsej muag ntev sib npaug ua ib qho kab rau xa.
100. OMSP Optical Multiplex Seem Tiv Thaiv
Cov txheej txheem no tsuas yog ua kev tiv thaiv 1+1 ntawm txoj kev kho qhov muag tsis muaj kev tiv thaiv cov khoom siv davhlau ya nyob twg. A 1 × 2 lub tshuab hluav taws xob tawg lossis lub teeb tsa hluav taws xob tau siv ntawm qhov pib thaum kawg thiab qhov tau txais qhov kawg, thiab cov teeb liab sib txuas ua ke tau sib cais thaum kis kawg, thiab lub teeb liab kho qhov muag tau xaiv ntawm qhov kawg tau txais. Optical multiplex ntu kev tiv thaiv tsuas yog siv tau yog ua raws li ob qhov cais qhov muag txuas.
