Kusiyana pakati pa digito walkie-talkie ndi analogi walkie-talkie

Monga tonse tikudziwira, walkie-talkie ndiye chida chofunikira kwambiri pamakompyuta opanda zingwe.Walkie-talkie imagwira ntchito ngati ulalo wa kufalitsa mawu munjira yolumikizirana opanda zingwe.Digital walkie-talkie imatha kugawidwa mumayendedwe a frequency division multiple access(FDMA) ndi time division multiple access(TDMA).Kotero apa tikuyamba ndi ubwino ndi kuipa kwa zitsanzo ziwirizi ndi kusiyana pakati pa digito ndi analogi walkie-talkies:

1.Two-channel processing modes ya digito walkie-talkie

A.TDMA(Time Division Multiple Access): Njira ya TDMA yapawiri-slot imatengedwa kuti igawanitse tchanelo cha 12.5KHz m'malo awiri, ndipo nthawi iliyonse imatha kutumiza mawu kapena data.

Ubwino:

1. Kuwirikiza kawiri kuchuluka kwa tchanelo kwa kachitidwe ka analogi kudzera mwa wobwereza

2. Wobwereza kamodzi akugwira ntchito ya obwereza awiri ndikuchepetsa ndalama za zida za hardware.

3. Kugwiritsa ntchito ukadaulo wa TDMA kumathandizira mabatire a walkie-talkie kugwira ntchito kwautali wopitilira 40% popanda kufalitsa mosalekeza.

Zoyipa:

1. Mawu ndi deta sangathe kufalitsidwa nthawi yomweyo.

2. Wobwereza mu dongosolo akalephera, dongosolo la FDMA lidzataya njira imodzi yokha, pamene dongosolo la TDMA lidzataya njira ziwiri.Chifukwa chake, kulephera kufooketsa mphamvu ndikoyipa kuposa FDMA.

B.FDMA(Frequency Division Multiple Access):FDMA mode imatengedwa, ndipo bandwidth chiteshi ndi 6.25KHz, zomwe zimathandizira kwambiri kugwiritsa ntchito pafupipafupi.

Ubwino:

1. Pogwiritsa ntchito 6.25KHz ultra-narrow band channel, mlingo wogwiritsira ntchito sipekitiramu ukhoza kuwirikiza kawiri poyerekeza ndi kachitidwe ka analogi 12.5KHz popanda wobwereza.

2. Mu njira ya 6.25KHz, deta ya mawu ndi GPS ikhoza kutumizidwa nthawi imodzi.

3. Chifukwa cha mawonekedwe akuthwa kwa bandi yopapatiza ya fyuluta yolandirira, kukhudzika kolandirira kwa id yolumikizirana kunayenda bwino munjira ya 6.25KHz.Ndipo zotsatira za kukonza zolakwika, mtunda wolumikizana ndi pafupifupi 25% wokulirapo kuposa wailesi yachikhalidwe ya analogi ya FM.Choncho, poyankhulana mwachindunji pakati pa madera akuluakulu ndi zida za wailesi, njira ya FDMA ili ndi ubwino wambiri.

Kusiyana pakati pa digito walkie-talkie ndi analogi walkie-talkie

1.Kukonza zizindikiro za mawu

Digital walkie-talkie: njira yolumikizirana yotengera deta yomwe imakongoletsedwa ndi purosesa ya ma siginoloji a digito yokhala ndi encoding yadijito komanso kusintha kwa baseband.

Analog walkie-talkie: njira yolankhulirana yomwe imasintha mawu, siginecha, ndi mafunde mosalekeza kupita ku ma frequency onyamula a walkie-talkie ndipo imakongoletsedwa ndi kukulitsa.

2.Kugwiritsa ntchito chuma cha sipekitiramu

Digital walkie-talkie: yofanana ndi ukadaulo wapa digito, digito walkie-talkie imatha kutsitsa ogwiritsa ntchito ambiri panjira yomwe yaperekedwa, kupititsa patsogolo kagwiritsidwe ntchito ka ma sipekitiramu, ndikugwiritsa ntchito bwino zida zamawonekedwe.

Analogi walkie-talkie: pali mavuto monga kugwiritsa ntchito pang'onopang'ono kwa zinthu pafupipafupi, chinsinsi chosamveka bwino choyimba foni, ndi mtundu umodzi wa bizinesi, womwe sungathenso kukwaniritsa zosowa za makasitomala amakampani.

3. Kuitana khalidwe

Chifukwa ukadaulo wolumikizirana ndi digito uli ndi kuthekera kowongolera zolakwika m'dongosolo, ndikuyerekeza ndi analogi walkie-talkie, imatha kukhala ndi mawu abwinoko komanso mawu omveka bwino pamawonekedwe ambiri azizindikiro ndikulandila phokoso locheperako kuposa lalkie-talkie.Kuphatikiza apo, makina a digito amaletsa kwambiri phokoso lachilengedwe ndipo amatha kumvera mawu omveka bwino m'malo ovuta.