FMUSER Single-Frequency Network Complete SFN Network Solution

FM Single-Frequency Network (SFN Network) ndi njira yowulutsira pa digito yomwe imagwiritsa ntchito ma wayilesi angapo omwe amagwira ntchito limodzi kuulutsa mawu amodzi munthawi imodzi pawayilesi imodzi. Dongosololi limathandiza kupititsa patsogolo kulandila kwa wailesi pogwiritsa ntchito ma transmitter angapo kutumiza chizindikiro chomwechi m'malo mwa chimodzi chokha. Zizindikirozi zimagwirizanitsidwa wina ndi mzake kuti zipereke chizindikiro champhamvu, chodalirika pamapeto a wolandira. Dongosololi limathandizanso kuchepetsa kusokonezedwa ndi masiteshoni ena komanso kupereka kufalikira kwabwino m'malo ovuta kufikako.

Malizitsani FM Single-Frequency Network (SFN Network) Solution kuchokera ku FMUSER

Yankho lathu litha kufotokozedwa ngati "networked" pulojekiti, yomwe ili ndi maukonde atatu, omwe ndi:

• FM Single Frequency Network (FM SFN Network)
• Audio Sync Transmission Network
• Remote Monitoring and Management Network.

Mayankho awa atha kutumizidwa m'njira yabwino, ndipo amatha kulunzanitsa ma wayilesi a FM mosabisa ndi zida zotsatirazi:

1. SFN FM Transmitter
2. Kulunzanitsa Audio Encoder
3. Kulunzanitsa Audio Decoder
4. GPS Standard Frequency Generator
5. Digital Standard Frequency Generator
6. Gwirizanitsani Digital Audio Satellite Receiver
7. GPS mlongoti (GNSS)
8. Data Telemetry Controller ya FM Transmitters
9. Complete Management System (Mapulogalamu)

FMUSER SFN Network Solutions Kufotokozera

Kuti mukhale wabwino kwambiri pakumanga kwa netiweki ya SFN, nazi mfundo zazikuluzikulu zomwe muyenera kukumbukira:

• Kukonzekera Mphamvu Yogwira Ntchito (EPR) ya ma transmitters a SFN a siteshoni iliyonse, nthawi zonse muzisunga pansi pa 20% mpaka ERP ya transmitter yaikulu ya SFN.
• Kusunga kukhazikika kwa kusiyana kwa kuchedwa kwa njira yotumizira ma audio.
• Kusunga kukhazikika komanso kulondola kwambiri kwa GPS.
• Kutengera ma transmitter apamwamba kwambiri a FSN

Nawa mayankho 4 ochokera ku FMUSER:

Katswiri Kwambiri: Satellite-based FM SFN Network Solution

Njira iyi ndiyabwino kwambiri pakuwulutsa ku kontinenti kapena chigawo. Komabe, kuti tiyambe ndi yankho ili, cholumikizira cha satellite chikufunika pawailesi yowulutsira, kapena ma siginecha amawuwo sangatumizidwe kumasamba olumikizirana.

Kusankha kwa Wopambana: Chingwe chochokera ku FM SFN Network Solution

Njirayi ndiyabwino kwambiri pakuwulutsa kwapachigawo kapena kumizinda. Imagwira ntchito potumiza ma siginecha amawu omwe amalumikizidwa ndi chingwe chakutsogolo cha TV mothandizidwa ndi netiweki ya hybrid fiber-coaxial (HFC) yomangidwa ndi boma la komweko, kenako imafalitsidwa ndi sync-decoder ya ogwiritsa ntchito, ma audio. potsirizira pake idzaperekedwa kwa ma transmitter angapo pa sync base station. Pogwiritsa ntchito netiweki yomwe ilipo ya HFC yomanga maukonde a SFN, owulutsa amatha kupulumutsa kwambiri ndalama zawo.

Kusankha Win-Win: Fiber-based FM SFN Network Solution

Yankholi ndi lodziwika ndi Synchronous Digital Hierarchy (SDH), ndipo ndilabwino kwambiri pamitengo. Ndi ubwino wa bandwidth yofalikira, kufalikira kwakukulu, mtunda wautali wotumizira, komanso kuvutika ndi kusokonezeka kwa magetsi, yankho lochokera ku fiber limalola mawailesi kuti atumize ma audio kwa ma transmitters angapo pa ma sync base stations kudzera pa intaneti ya SDH. .

Kusankha Kwachikale: Microwave-based FM SFN Network Solution

M'madera osiyanasiyana padziko lonse lapansi, pali zochitika zachilengedwe zosiyana kwambiri ndi zochitika zamagulu (monga chuma, kuchulukana kwa anthu, ndi zina zotero) zomwe zingachepetse khalidwe la kuulutsa, ndichifukwa chake microwave ndiyofunikira, pogwiritsa ntchito microwave transmission, palibe chifukwa zingwe zowonjezera, fiber-optics, kapena satellite. Kutumiza kwa microwave kumawoneka ngati njira yowonjezereka, yotsika mtengo, komanso yothandiza, Choncho, poyerekeza ndi njira zitatu zoyambirira , njira yothetsera SFN ya microwave yochokera ku microwave ndiyo yosinthika kwambiri, komanso kugwiritsa ntchito ma microwaves kupanga Digital Synchronous Network (SDH) ) zatsimikiziridwa kuti zimagwira ntchito yofunika kwambiri pakuwulutsa madera ambiri.

Kodi maubwino ndi kuipa kwa FM Single-Frequency Network (SFN Network) ndi chiyani?

Ubwino wa FM SFN Network (netiweki yamtundu umodzi) ndi:

• Kufalikira kwabwino: Maukonde a SFN amapereka chidziwitso chowongolera chifukwa ma siginecha akufalitsidwa kuchokera kumadera angapo, kupereka chizindikiro champhamvu kuposa netiweki yanthawi imodzi.
• Kupulumutsa mtengo: Ma network a SFN nthawi zambiri amakhala otsika mtengo kukhazikitsa ndi kukonza kuposa mitundu ina yamanetiweki.
• Kukonza kosavuta: Maukonde a SFN ndi osavuta kusunga chifukwa cha kuwongolera kwapakati pamaneti.

kuipa a FM SFN Network (netiweki yamtundu umodzi) ndi:

• Kusokoneza: Maukonde a SFN amatha kusokonezedwa ndi zizindikiro zina ndi machitidwe, zomwe zimapangitsa kuti zizindikiro zikhale zochepa komanso kuchepetsa kufalitsa.
• Kukonzekera kovutirapo: Maukonde a SFN amafunikira luso lochulukirapo komanso chidziwitso chaukadaulo kuti akhazikitse ndikuwongolera, zomwe zimapangitsa kuti zikhale zovuta kuziyika ndikuzikonza.
• Mitundu yocheperako: Maukonde a SFN amakhala ochepa munjira zawo chifukwa chodalira ma transmitters angapo.

Kodi kugwiritsa ntchito kwa FM Single-Frequency Network (SFN Network) ndi chiyani?

FM Single-Frequency Network (SFN Network) ndi njira yowonetsera maukonde omwe amagwiritsa ntchito ma frequency amodzi kufalitsa ma transmitter angapo kudera lomwelo. Netiweki yamtunduwu imakhala ndi ntchito pawayilesi wawayilesi ndi wailesi yakanema, kulumikizana ndi mafoni, ntchito zachitetezo cha anthu, ndi zina zambiri. Ma SFN Networks ndi odalirika kwambiri, amapereka ma audio ndi makanema apamwamba kwambiri, ndipo ndi otsika mtengo kuposa njira zina zowulutsira. Kuphatikiza apo, amathandizira kufalikira kwakukulu ndi ma transmitter ochepa, pomwe amaperekanso zabwino monga kuwongolera chitetezo chokwanira komanso kuchepetsa kugwiritsa ntchito mphamvu.

Chifukwa chiyani FM Single-Frequency Network (SFN Network) ndiyofunikira?

FM Single-Frequency Network (SFN Network) ndiyofunikira chifukwa imapereka njira yotsika mtengo yophimba madera akuluakulu ndi chizindikiro chimodzi. Imathandizanso kuti mawayilesi amawayilesi a FM azitha kuwulutsa, ndikuwonetsetsa kumvetsera kosasinthasintha. Kuonjezera apo, ma SFN Networks amathandizira kuchepetsa kusokoneza pakati pa zizindikiro zambiri zomwe zimadutsana, zomwe zimapangitsa kuti phokoso likhale lapamwamba komanso kusokoneza kochepa.

Momwe mungapangire pang'onopang'ono ma FM Single-Frequency Network (SFN Network) yawayilesi ya FM?

1. Sankhani pa masanjidwe a netiweki ya SFN - izi zimaphatikizapo kuchuluka kwa ma transmitters, malo awo, ndi magawo awo otumizira.
2. Pezani zilolezo zofunikira za ma transmitter ndikusintha ma transmitter aliwonse ndi magawo oyenera.
3. Ikani ma transmitter m'malo oyenera ndikuwonetsetsa kuti tinyanga takhazikika bwino.
4. Lumikizani ma transmitter ku cholumikizira chapakati kuti mupange netiweki ya ma transmitter.
5. Gwirizanitsani ma transmitter kuti muwonetsetse kuti akuwulutsa mawu amodzi nthawi imodzi.
6. Yesani netiweki ya SFN kuti muwonetsetse kuti ikugwira ntchito bwino.
7. Yang'anirani netiweki ya SFN kuti muwonetsetse kuti ikuyenda bwino.
8. Sinthani maukonde ngati kuli kofunikira kuti muwongolere magwiridwe antchito ake.

Ndi zida ziti zomwe zimakhala ndi FM Single-Frequency Network (SFN Network)?

Netiweki yathunthu ya FM Single-Frequency Network (SFN Network) imakhala ndi ma transmitter, olandila, ndi chowongolera maukonde. Wotumiza amatumiza chizindikiro pama frequency amodzi, omwe amalandiridwa ndi onse olandila. Woyang'anira maukonde ndiye amagwirizanitsa olandila, kuti onse alandire chizindikiro chomwecho nthawi imodzi. Izi zimatsimikizira kuti mawuwo amamveka nthawi imodzi, m'malo mochedwa kapena kusalunzanitsidwa. SFN Network imalolanso kufotokozera bwino zizindikiro, popeza chizindikirocho chimatha kufika kudera lalikulu kusiyana ndi maulendo angapo.

Kodi mungasankhe bwanji FM Single-Frequency Network (SFN Network) yabwino?

Posankha FM Single-Frequency Network (SFN Network) yabwino kwambiri yowulutsira pawayilesi ya FM, ndikofunikira kuganizira zofunikira za wowulutsa, monga dera lomwe likuyenera kutsekedwa, mphamvu yama siginecha yomwe mukufuna, bajeti yomwe ilipo, komanso zofunikira zaukadaulo za netiweki. Kuphatikiza apo, ndikofunikira kufufuza zomwe makasitomala adakumana nawo m'mbuyomu kuti muwonetsetse kuti SFN Network yosankhidwa ikukwaniritsa zomwe wowulutsa amayembekezera. Pomaliza, ndikofunikira kulumikizana ndi katswiri wodziwa zambiri kuti mupeze upangiri pazabwino kwambiri za SFN Network pazosowa za wowulutsa.

Momwe mungasungire molondola FM Single-Frequency Network (SFN Network)?

Monga mainjiniya, muyenera kuwonetsetsa kuti FM Single-Frequency Network (SFN Network) imayang'aniridwa ndikusamalidwa motsatira malangizo a wopanga. Izi zikuphatikizanso kuyang'ana nthawi zonse momwe tinyanga tayendera, kutsimikizira mphamvu ya ma transmitter, ndikuwonetsetsa kuti zida zonse zikuyenda bwino. Kuphatikiza apo, muyenera kuwonetsetsa kuti ma netiweki amayang'aniridwa pafupipafupi kuti asokonezeke, ndikuchitapo kanthu kuti muchepetse kusokoneza kulikonse komwe kwapezeka. Pomaliza, muyenera kuwonetsetsa kuti zosintha zilizonse pa SFN Network zalembedwa ndikugawana ndi mainjiniya ena omwe angakhale ndi udindo wokonza.

Kodi mungakonze bwanji FM Single-Frequency Network (SFN Network) ikalephera kugwira ntchito?

Ngati FM SFN Network ikulephera kugwira ntchito, sitepe yoyamba ndiyo kuyang'ana maulumikizidwe onse pa intaneti kuti muwonetsetse kuti zingwe zonse zalumikizidwa bwino. Ngati kugwirizana kuli bwino, sitepe yotsatira ndiyo kufufuza zigawo za hardware za maukonde, monga mlongoti, magetsi, ndi amplifiers, kuti atsimikizire kuti akugwira ntchito bwino. Ngati zigawo za hardware zikugwira ntchito bwino, sitepe yotsatira ndiyo kufufuza zigawo za mapulogalamu a pa intaneti, monga encoder ndi modulator, kuti muwonetsetse kuti zakonzedwa bwino. Ngati zida za pulogalamuyo sizikukonzedwa bwino, ndikofunikira kutsatira malangizo a wopanga kuti mukonzenso zosintha. Kutengera ndi vuto, pangakhale kofunikira kusinthira fimuweya kapena mapulogalamu ku mtundu waposachedwa. Malumikizidwe onse ndi zigawo zonse zikafufuzidwa ndikugwira ntchito bwino, sitepe yomaliza ndikuyesa maukonde kuti muwonetsetse kuti ikugwira ntchito monga momwe akuyembekezeredwa.

Momwe Mungasankhire Base Station yamaneti a SFN?

• Kuganizira za Magalimoto: Onetsetsani kuti masiteshoni omwe asankhidwa amatha kuphimba misewu yayikulu yozungulira.
• Poganizira kuchuluka kwa anthu: Ganizirani zosankha zomwe zimalola kufalikira kwa madera okhala ndi anthu ambiri monga mizinda kapena matauni.
• Kuganizira Zowonjezera: Onjezani malo owonjezera ofikira m'mizinda yayikulu yokhala ndi nyumba zazitali zozungulira.
• Kutengera kutalika kwa Antenna: Sungani mtunda pakati pa malo oyambira mkati mwa 31 mailosi ngati kutalika kwa mlongoti wa siteshoni kukhazikitsidwa pamalo otsika; Sungani mtunda wapakati pa masiteshoni mkati mwa 62 mailosi ngati kutalika kwa mlongoti wa siteshoni kukhazikitsidwa pamalo apamwamba.

Momwe Mungakhazikitsire Network Yonse ya SFN?

1. Kukonzekera kafukufuku wa malo ndikukonzekera mayankho
2. Kusankha zida zoyenera ndi kuchuluka kwake
3. Kuyika chigawo chapakati chogwirizana (AKA: malo omwe amadutsana) pa siteshoni yoyambira poyesa mphamvu yamunda.

Kuphatikiza apo, kusintha kwa kuchedwa kwa nthawi yofananira kukhala malo abwino olumikizirana pakati pa zone yolumikizana kudzakwaniritsa izi:

• PALIBE kugunda kwa ma frequency omwewo m'dera logwirizana (kuwunika ngati palibe ma audio)
• PALIBE kusiyana kodziwikiratu kosinthika komwe kumabwera kaphokoso m'malo ogwirizana (mawu omveka bwino komanso nyimbo zosangalatsa)
• PALIBE kupotoza koonekera bwino kwa gawo logwirizana (phokoso pang'ono lakumbuyo)
• Kuwunika koyang'anira kachitidwe ka kulumikizana kumafikira mfundo zopitilira 4 (kupatula malo amthunzi)

Kodi zofunikira zaukadaulo za FM SFN Network ndi ziti?

Kuti muthe kuwulutsa mosasunthika ndi SFN Network, zosokoneza zomwe zili m'dera logwirizana ziyenera kuthetsedwa kamodzi, ndipo apa pali zinthu zinayi zofunika kuziganizira bwino, zomwe ndi:

Chitsimikizo cha Mphamvu Zokwanira za Munda

Ndikofunikira kuti pakhale mphamvu yakumunda yokwanira m'malo onse otumizira mauthenga mudongosolo.

Co-Frequency

Munjira yowulutsira yolumikizana ya FM, kusiyana kwafupipafupi pakati pa chonyamulira ndi ma frequency oyendetsa pakati pa ma transmitter awiri oyandikana ndi ochepera 1 × 10-9, kukhazikika kwazomwe zimayambira pafupipafupi pa siteshoni iliyonse ≤5 × 10-9/24 maola.

Mu gawo

Munjira yowulutsira yolumikizana ya FM, pamalo omwewo omwe amalumikizana, kusiyana kwa nthawi pakati pa ma siginecha osinthidwa omwe amafalitsidwa ndi ma transmitter awiri oyandikana:

• Kuwulutsa kwa Mono ≤ 10μS
• kuwulutsa kwa stereo ≤ 5μS.

Munjira yowulutsira yolumikizana ya FM, kuchedwetsa kwa gawo kwa siginecha yosinthidwa ya chotumiza chilichonse:

• Kuposa ±1μS (1KHZ, kupatuka kwakukulu pafupipafupi: ± 75KHZ, maola 24).

Co-Modulation

• Munjira yowulutsira yolumikizana ya FM, cholakwika cha digiri ya ma transmitters awiri oyandikana ndi ≤3%
• Munjira yowulutsira yolumikizana ya FM, cholumikizira chilichonse chimafunikira kuti chikhazikike ≤2.5% (1KHZ, kupatuka kwakukulu pafupipafupi: ± 75KHZ, maola 24).