Phone CDMA: He aha ka mea? Pālua-kelepona CDMA + GSM

CDMA mea,ʻaʻole like mahalo i ka luawai-ike a aloha ma GSM ana. Naʻe, ka mea e hana ana i kona pono a me ka pomaikai. Nolaila, i ka wa a ke kūʻaiʻana i ka hou ke kelepona hele loa ka aie i kekahi noonoo ana i ka CDMA-GSM-kaul. Kēia e ia i ka maikaʻi loa koho.

He aha ka mea?

Code Māhele mau ke kōkua o - pono kū no ka hua h ÷ ailona o keia kamailio ana o ka hae. Ua pili ia i ka hoʻohana 'ana i mau kaha me ka kuhi mahele. I ka Ia manawa i loko o ka hea, ka pilikinoʻikepili , a me ka leo iho ua pū i hiki ma kekahi mau auwai a, a ma kekahi mau alapine. Eia, no ka hapanuiʻikepili hoakaka ia oi makahiki ma mua o me GSM hae.

Phone CDMA - He aha ka mea? Kēia mea he ana i nā Hāmeʻa e hoʻolako lawelawe e like me pololei hōʻike degere a me ka lawe lima helu, holoahiʻikepili palapala a me ka EYI o ka memo i ka uku o ka mai i 2.3 Mbps. CDMA rula ninoieo i loko o ka palena manawa huahelu mai ka hōʻailona 'ike. Keia ua hana hoʻohana mau epekema: ala kaʻina, a me ka alapine (frequency) hopping. Ma ka hihia mua, i ka papa kuhikuhiE lawe alapine hoʻololi kona waiwai i loko o ka kekahi huahelu. Ka pa alima hana e like me ka mea ia algorithm. Keia koho a aaioee ua hoomakaukau i ka maopopo Kanal. kauoha kaʻina hana hoʻohana i ka walaau-e like no lepa. Penei, kēlā kanaka neaiae ua pē ma kekahi hanana kivila, hoʻolaha i ka pae ana o ka 'ike peʻahiʻana iho.

He aha ka GSM?

About ka papa kuhikuhiE enemi CDMA ike nui aku. I ka mea, ua 'Imi hoʻohana' ia i loko o ka wahi lulu ke kelepona hele latike. Ke GSM hae hoʻohana TDMA enehana, a ua nānā 'ana ma luna o ka algorithm o ke alapine (frequency) kaʻawaleʻana Kanal. Aia i ka poe a pau i eha papa koa:

• Single-huahelu. Kākaʻikahi ka.
• Pālua-koa. Here kaul nākiʻi i kekahi māhele'āina.
• Ka Tri-koa. Standards i hoʻohana 900/1800/1900 a me 850/1800/1900.
• Quad. Oia functionality aka aneane pau hou Phone.

Aia i kekahi hiʻona ma GSM manaʻo, i hiki ole kaena i ka CDMA kelepona paʻa lima. He aha ka mea? Ke hou SIM-kāleka. A me kona kōkuaʻoe ke hoʻololi i ka Aʻole e hoopuni a koke.

Mōʻaukala o ka 'ike loea hou

I loko nō o ka ka manaʻolana 'ia a me ka maluhia, keia hae ua i hoʻohana like pinepine. A ua nui na mea noi i ke kēia nīnau: «CDMA Phone - He aha ka mea"?. Kona mōʻaukala, hoomaka ae la ma na 30s o ka hope kenekulia.

Ma ka Soviet Union i komo i loko o pili noiʻi illustrious academician DV Ageev I ka makahiki 1935,ʻo ia paʻi i kona mau hana "kuhi mahele mau ke kula." Ka palapala, aole ia e lilo i ka bestseller, no ka mea, hou e pili pū i ka wā e hiki mai Aey? acaeoey. Akā koke i i keia kumuhana, a 'ē aʻe pono-ikeiaʻepekema. Mai ka loiloi mua kumu no ka hou 'ana o CDMA' enehana i hanaia.

Ua i loko o ka hopena o 50 ka i loko o ka United States i hoʻohana i ka hae no nā luna hoʻolale mau hana. A wale nō ma ka 'enehana ka 80 ka Ua declassified, a hōʻike mai iā ia i ke ao nei. Ke hakuloli i ka mea hiki Dr. Irwin Mark Dzheykobs. Ma hope,ʻo ia a kukulu no hoi iluna i kona mau naueue Qualcomm ka, hana ma ka ukali palapala, telephony a me ke kelepona hele nenoai.

Mahalo i kēia 'Amelika 1992 i ka hou maʻamau i hoʻokō' Imi nā hualoaʻa a. A mai 1996 ka mea, ua hoʻohana 'ia ka ia CDMA-GSM-kaul. Ma keia hihia, i ka manawa i hele ma kahi o 24'āina o ka papahana.

CDMA hae

I loko nō o ka mea i 'ike loea hou keia hiehie i ka loina o ka hana, e loaʻa paha kekahi mau kuhikuhi. Maoli, CDMA nenoaiu hoʻohana i kekahi Kanal laula 1,23MGts e puhi ia. Ma keia hihia, o ka leo ia iho ua encoded i ka uku o ka 8,55 kbit / mau. I kekahi manawa, i kēiaʻikepili kahawai o ua truncated ia 1,2 kbit / mau. Keia hae hoʻohana CDMA Nokia kaul poe noonoo ole. Lākou pono - pono a me ka mea e like ai.

CDMAOne hae i koe i loko o ua-95a kino Ke Ana Hoʻohālike, UA-95b a me J-STD-008. Neaiae hoʻike kōmi 'aneʻi ka 9,6 kbit / k i 115,2 kbit / mau. Mea ulana pukapuka,ʻikepiliʻikeʻia i kakahiaka nui me 1995 ma Amerika. Ano, o ka hae i hala loa, he pono ole ia ma Asia. Ma Rusia, wale ae e hoʻolako i nā lawelawe i ka kekahi paa-laina ma luna ia o ka kahua.

Maʻamau CDMA2000 - hope CDMAOne. He pono penei ka 3G hanauna. Kekahi hiʻona a me kona waiwai moe i loko o ka mea i ka mea, ua nānā 'ana ma luna o kēia hae e hoʻomōhala hou nenoai o ka lawe lima ana.

WCDMA hae

Ua Ua laha ma Japan. Kēia 'enehana ua hoʻohana' ia i loko o kiʻekiʻe-māmā EYI o likeʻole likeʻole, wikiō conferencing a me ka Internet ke kula. China Ua hoi he alakaʻi ma ka hana o ia latike, nae, a me ka WCDMA latike e neʻe TD-SCDMA a me 2000-CDMA.

Inā mākou e kamailio e pili ana i ka loina o ka hana, e hiki e mai la oia ia ia mea no hoi he mau ke kōkua o kuhi mahele na auwai a me ka pololei mailaila aku o ka pae. A pau keia pele i kela kīnā 384 kbit / ka, a me ka bandwidth - mai i ka 5 MHz. Keia ua loaʻa ma ka hoʻohana 'ana o ka multicode pu ana, a ee iaaanu aey hohola ololi.

Ke kumu nui ia Morohiha o keia kamailio ana o ka hae o ia mea, aole ia ole i kekahi global manawa i maopopo kahi a me ka GPS. A ka mea e ae ke hana kū kaʻawale o ke kulanakauhale, a me ka'āina i loko o i ua waiho. 'O kēia ka likeʻole ma waena o CDMA GSM kaul (me Odessa ua uhi ma ka mea ulana pukapuka,).

Kekahi nui ololi, e olelo ana ma ka lokomaikai o keia hae, ka mea, o ka ea mau '. Ua hana ai ia oe ke oluolu hoʻohana ole wale multiplayer? Eaia, akā, i ka akamai hoʻonohonohoʻia o ke koi 'ia adaptive antennas. Kēia ka poʻea pau i ka nui mahuahua, a throughput wahi.

CDMA-450

Manaʻo o kēia'ōnaehana i ka impetus no ka hooulu ana i ka hou hanauna o ka lawe lima latike. Eia kekahi o keia hae ia mea i na mea a pau hiki e loa i hoʻohana alapine (frequency) papa koa o ka lawe lima ke kelepona hele nenoai. He Ua hoomaka ana e hoʻohana i ka CDMA-kaul (Ukraine o kekahi ma kaʻaoʻao pale āpana).

Kēia mau latike e hāʻawi i ka nui laulā o ka 'ōlelo. ke kumu o nā ana mai i pono e kūkulu i ka hailona o ka wahi i mea. Ma ke kahua o ka lawe lima Internet mea i ka helu o ka pono ma luna o ka mau GSM-ana. EV-hana 'ike loea hou hoʻolako hoʻoleleʻenehana māmā holo mai i 2,4 Mbit / mau.

Aoaaoʻikepili ka'ōnaehana mea nui i pakele no ka mea, ka mea hoʻohana he kūikawā algorithm no encryption a me cryptographic hōʻoiaʻikepili pilikino o ka lawe lima maʻi. Pono e noonoo i ka 'ike loea hou, e ia no ka maʻamau poe kanaka. O ke kumu ho i ka mea i ka wā o ka pāhawewe mana wahi i loko o 11 mau manawa emi ma mua ia o ka o GSM-latike.

Mai nā mea a pau i ka luna e ia i ka ninau kupono o ke kumu i loko o Rusia, a me ka Moscow CDMA-450 kaul mea i mahaloia? Ke kumu, e like me ka mea huli mai i kekahi mau:

• Ka nele o kūikawā lako a pan.
• ʻAʻole ia iʻike i nā loko o ka manaoia ho a me ka momoku ahi CDMA-kaul.
• Hoomaloka o roaming.

Pono o ka CDMA

Kēia 'enehana, kŘpa a hou. A ia mea pili kēia emi iki mahope o keʻike mau ke kelepona hele GSM ana. Ua loaʻa C. Brewer pono:

• Kulekele a me ka maluhia o ka 'ike. Manawa i pili keia hoʻopā'ālua enehana ka, mea hoʻohana aneane loa palekana mai kaʻano o nā paena hana. Eia hou kekahi, 'aneʻi ihola ia eliminated kāʻei kua leo, a me ka manawa kūpono o laua kelepona.
• Lower ka ikehu. Ma muli o ia ka hoʻomākaukau leʻa EYI o CDMA-450 kaul na pu ki aloha pana aku au i nui ke kua'āina oʻikepili. Kēia e ae Manufacturers e ho okumu ana hoʻohālike i ua ikaika nui ae olelo hoopomaikai a me ka ergonomic.
• ʻaneʻane i kū ana i ke kamailio. Ma CDMA maʻamau kaul nui mahuahua bandwidth kāhea aku a ke i eliminated hana a me ka laua laina.
• Hoopomaikai io Area Panel hana. Ma kekahi CDMA hoʻohana he loa okoa kelekaʻaʻike loea, a hiki me ka nui loa hoʻonui i kaʻaoʻao pale wahi.
• Additional lawelawe. Kēia hiki e nui hoolilo o ka hana ana ka ikepili a me nā memo, 'ike ana i kekahi mea kūʻai, etc.

I mea no ke aha la oi a oi mea hoʻohana koho CDMA kelepona. He aha ka mea? manawa An e kiʻi i nā pono i hookahi!

CDMA keakea

I loko nō o ka maopopo pono ma luna o ka GSM hae, e 'Imi hoʻohana i kēia mau latike ma Amerika. Europe ua pololei e hoomaka ana e hele a ike i keia 'enehana. Mawaena o na drawbacks iʻole kokololio, a CDMA paulele holomua ma ka nuipa e na kēia:

• Kāki. I loko nō o kona kulana aho holo 'awelika no ka pololei dialing, mau kaul ua oi pipiʻi ma mua o GSM-analogues.
• Hana hou. Aie i ka mea i kēia mau Hāmeʻa i ole, he pono ole i loko o ke ao nei, e hoʻokuʻu māhele i pilikia i loaʻa. Eia hou kekahi, hoʻopaʻa 'ike loea i ka mea i kekahi,ʻaʻohe a mai na mea a pau kama'āina.
• I ka wa e kaawale aku o ka waihona ipu wahi i loko o ka CDMA kelepona. He aha ka mea? Kēia mau mea nui o ke kelekaʻaʻike mea i ulanaʻiaʻaoʻao pale.

pālua-kaul

I hiki ke ike mai i ka 'atikala, a me CDMA a me GSM i kona ikaika a me ka palupalu. A me mākou ke kanaka kokoke wale nui e hoʻohana a pau i kahi hoʻokahi. Ia mea ke kumu o ka CDMA-GSM pālua-kelepona i invented. Ua hiehie a pau i ka pono o nā 'oihana.

He aha ka mea? He loa ka maʻamau lawe lima kelepona me ka hou o na pu ki i ke kākoʻo i ka nui loa o nā kelepona 'a me ka i kamaʻilio. Design, a functionality ia aole e oko mai ka maʻamau counterparts.

Oia waihona meli nei lilo increasingly mahalo. Nolaila, hoomaka ae la ke kiʻekiʻe o alakai lawe lima lama e paka kekahi pālua-laina ana i nā Hāmeʻa.

No ka laʻana, CDMA-450 kaul 'Imi hoʻolaha ma Skylink. E hiki no hoi loaʻa Ke Ana Hoʻohālike o Nokia, Huawei, Pantech, Nokia, a he nui'ē aʻe i loko o nā hale kūʻai.

Hiʻona pālua-kaul

Ma waho aʻeo ia iaea ooieoeiiaeuiiai puke hui 'ana, ma kekahi mea kūʻai ke haawi pono 4 a oi na keena, e like me kekahi mau e-mail helu kuhi henua mai ka CDMA-GSM-ke kelepona hele, loaʻa nō kekahi mau kaʻokoʻa:

1. He advantageously monoblocks. 'Oiai, i loko o nā makahiki hiki ke loaʻa sliders a me clamshells.
2. Aneane pau kaul kākoʻo microSD.
3. Cell i hoʻolako pono me ka 2 megapixel pahupaʻiwikiō ma ka liʻiliʻi loa. O ka papa, a me ka ulu hiʻona a me ka ulu huahelu hōʻike ma ke kelepona market. Ke Competition komo pū nui a me ka oi Manufacturers, hoʻomohala i ka manao, hoʻokomo oaoieei-uea a me nā 'ano, etc.

I mau, e ana hōʻike i kēia mau Ke Ana Hoʻohālike ma lalo o ka mau Phone a me kaul. Manufacturers Ke ho'āʻo nei e hana iā lākou i loko o ka ninau i manao ai, a me ka mea ia 'ia paha o nā hana. Kekahi kūlanakauhale i increasingly hoʻohanaʻia CDMA-kaul. Odessa, no ka laʻana, e like me ka awa kikowaena hoʻolako ka manawa e hoʻohana i nā ana hoʻohālike. Loko, ka mea i waeia o ka aina, o ka papa, uuku.