I-COFDM Transceiver

Yintoni i-COFDM Transceiver?

I-COFDM Transceiver sisixhobo sesibini esinokufumana kwaye sithumele idatha kunye nevidiyo. I-COFDM isidluliseli kunye nomamkeli yi indlela enye link, ixhasa kuphela ukuhanjiswa kwe-unidirectional.

I-transceiver ye-COFDM ineesethi ezimbini zee-COFDM ezithumela kunye nabamkeli, ezithumela kumacala achaseneyo ukuze isixhobo esinye sifumane kwaye sithumele idatha, ividiyo, kunye nesandi kwesinye isixhobo esidityanisiweyo. Ke i-COFDM Transceive i ikhonkco lokuthumela ngeendlela ezimbini.

Zombini i-COFDM transceiver ineethernet IP RJ45 connectors, ifana nentambo yomnatha engabonakaliyo. Ixhasa ukudibanisa ikhamera ye-IP kwaye ikwaxhasa ukudibanisa iikhomputha ezimbini ezikude, ixhasa ukuqhuba imiyalelo yeping kwiWindows OS CMD, eya kuthi inike ingxelo ngexesha lothumelo.

Indlela yokukhetha i-COFDM Transceiver?

Xa ukhetha i-COFDM transceiver, kusenokufuneka uqwalasele iinkalo eziliqela:

Ubuninzi

Abadlulisi be-COFDM kunye nabamkeli bathumela kwicala elinye, ngoko ke kufuneka kuthathelwe ingqalelo ifrikhwensi enye kuphela. I-COFDM transceivers lusasazo oluhamba kabini, ngoko ke iifrikhwensi ezimbini kufuneka ziqwalaselwe. Uluhlu lweefrikhwensi ezimbini kufuneka zohlulwe kangangoko kunokwenzeka ukuphepha ukuphazamiseka. Ukuze kupheliswe i-clutter kwaye ugweme ukuphazamiseka, Kukwayimfuneko ukuqwalasela ukongeza isihluzo sokudlula amaza.

Uluhlu oluthile lwefrikhwensi lunokusuka 170 ukuba 860 MHz. Umzekelo, khetha i-300Mhz ye-uplink frequency kunye ne-600Mhz ye-downlink frequency.

Ukhetho oluthile kufuneka luthathele ingqalelo imeko yendawo yokuhlala rhoqo. Ukuba kukho i-DVB-T okanye i-DVB-T2 TV yedijithali kwindawo yendawo, Kukwayimfuneko ukuphepha iifrikhwensi ezikhethwe ngumabonakude wedijithali kangangoko.

Emva kokukhetha amaza osasazo, ukuphindaphinda komamkeli kufuneka kwakhona kugcinwe kuluhlu olufanayo ukugqibezela usulelo kunye nolwamkelo.

bandwidth

Ngokungafaniyo nomabonakude wedijithali, enayo 6, 7, kunye ne-8Mhz bandwidth, I-bandwidth ye-COFDM ye-transceiver inokwenziwa ngokwezifiso, njenge-2MHZ kunye ne-4MHz.

Power sesimangalo

I-amplifier yamandla ekhankanywe apha sisixhobo esinokunyusa amandla emveliso ye-COFDM yesignali evela kumthumeli, enokuphucula umgangatho womqondiso kunye nokugubungela.
I-amplifier yamandla ye-COFDM transmitter idinga ukugcina umgca wesignali kunye nokusebenza kakuhle. Ngokubanzi, khetha i-amplifier yamandla efanelekileyo ngokusekelwe kumgama owufunayo ukuwuhambisa. Oku kulandelayo yitheyibhile yembalelwano phakathi komgama wothumelo kunye ne-amplifier yamandla kwireferensi yakho.

Power sesimangalo	THE	NLOS
500MW	>10Km	<300m
1W	>30Km	<500m
5W	>60Km	<1500m
20W	>120km	<3000m
50W	>200Km	<5000m
100W	>250Km	<10Km

Ukuqaphela

Uvakalelo lubhekiselele kwisakhono sevidiyo esasaza ngaphandle kwamacingo ukuhambisa imiqondiso ebuthathaka kwaye ifunyenwe ngummkeli..

Uvakalelo ludla ngokulinganiswa ngeedecibels (dB) okanye decibel milliwatts (eMfutshane DBM) kwaye imele ubuncinci bomgangatho wamandla omqondiso onokuthi umthumeli abone kwaye aqhubeke.

Okukhona uvakalelo luphezulu, ngcono ukusebenza kunye noluhlu losasazo lwevidiyo engenazingcingo.

Iimveliso ze-COFDM Transceiver

I-COFDM idla ngokuba nezakhelo ezimbini zokusebenza zeCOFDM ukusuka kwi-170Mhz ukuya kwi-860Mhz. Iifrikhwensi ezikhethiweyo kufuneka zibe kude kangangoko ukuthintela ukuphazamisana.
Ekusetyenzisweni kwangempela, kuyimfuneko ukudibanisa i-amplifier yamandla e-PA, isihluzo, kunye ne-eriyali ehambelana namaxesha okusebenza.

Iphakheji ye-COFDM Transceiver

I-COFDM transceiver, ikwabizwa ngokuba yiBidirectional COFDM Ethernet Radio, I-Bidirectional Wireless Ethernet Bridge.

Ngaba unokwenza ngokwezifiso i-340Mhz kunye ne-554Mhz COFDM transceiver kum?

Ewe.

Kutheni zisetyenziswa izihluzo ezibini nge-transciever nganye? Isihluzo esinye se-RX kunye ne-PA enye ye-TX yanele?

1. Izihluzi zongezwa ukunqanda ukuphazamisa okanye ukuphazanyiswa zezinye izixhobo.
   Nceda uvavanye i-transceiver kuqala ngaphandle kokudibanisa isihluzo.
2. Isidluliseli songeza isihluzi kuba sinesandisi samandla, Iza kukhupha umqondiso onamandla ukuphepha ukuphazamisa ezinye izixhobo kwinqwelomoya.
3. Umamkeli wongeza isihluzi sivumela umamkeli ukuba afumane kuphela isignali efunwayo kwaye aphephe i-clutter, kwaye uvakalelo lomqondiso luyaphuculwa.
4. Kufuneka uqhagamshele icebo lokucoca xa umgama wothumelo ungekho kude okanye amandla omqondiso abi kakhulu kuvavanyo.
5. Ukuba isidluliseli asongezi isihluzi, inokuphazamisana nolawulo lokubhabha okanye ibhetri yamandla. Abanye abathengi baye badibana nale nto ngaphambili, kwaye icebo lokucoca liyisombulule ingxaki.
6. Uthatha isampuli ngoku kwaye ucebise ukuyithenga kunye xa uyivavanya kwaye ufuna isihluzo, kwaye kuya kuthatha ixesha elininzi kunye nomthwalo ukuyihambisa.

Ngaba unokwenza ngokwezifiso i-175Mhz kunye ne-320Mhz COFDM i-transceiver kum?