MIMO tekinoroji inoshandisa akawanda antenna kufambisa uye kugamuchira masaini munzvimbo isina waya yekutaurirana.Iwo akawanda antenna kune ese ari maviri ekutumira uye anogashira anovandudza zvakanyanya kutaurirana kuita.MIMO tekinoroji inonyanya kushandiswa mukatimobile communicationsminda, tekinoroji iyi inogona kuvandudza zvakanyanya sisitimu simba, yekuvhara huwandu, uye chiratidzo-kune-ruzha chiyero (SNR).
1. Tsanangudzo yeMIMO
MIMO Wireless Communication tekinoroji inodaidzwa kuti Multiple-Input Multiple-Out-put (Multiple-Input Multiple-Out-put) tekinoroji, uye inogona zvakare kunzi Multiple Transmit Multiple Receive Antenna (MTMRA, Multiple Transmit Multiple Receive Antenna) tekinoroji.
Nheyo yayo yakakosha ndeye kushandisa akawanda ekutepfenyura antennas uye kugamuchira antennas kumagumo ekutumira uye kugamuchira kumagumo zvakateerana, uye kukwanisa kusiyanisa masaini anotumirwa kune kana kubva kwakasiyana mativi enzvimbo.Inogona zvakare kuvandudza simba rehurongwa, kuvharika uye chiratidzo-kune-ruzha reshiyo pasina kuwedzera bandwidth uye kufambisa simba, uye kuvandudza kunaka kwekutapurirana kwemasaini asina waya.
Yakasiyana nemaitiro echinyakare ekugadzirisa masaini mukuti inodzidza matambudziko ekugadzirisa zviratidzo kubva kune zvese nguva nenzvimbo.Sezvinoratidzwa muMufananidzo pazasi, iyo MIMO system ine Nt uye Nr antennas pane transmitter uye inogamuchira zvakateerana.
Yakareruka MIMO system
2.Kuronga kweMIMO
Zvinoenderana nemamiriro akasiyana uye akasiyana mhepo nharaunda, anotevera mana anowanzo shandiswa MIMO maitiro ekushanda: SISO, MISO uye SIMO.
3.Mafungiro akakosha muMIMO
Kune akawanda pfungwa anosanganisirwa muMIMO, anonyanya kutsoropodza ari aya matatu anotevera: siyana, kuwanda uye kuchinjika.
Kusiyana uye kuwanda kunoreva maitiro maviri ekushanda eMIMO tekinoroji.Pano isu tinokuratidza iwo akakosha pfungwa kutanga.
●Kusiyana-siyana: kunoreva kutapurirana kwechiratidzo chimwechete pane dzakawanda dzakazvimiririra dzekufambisa nzira.Ndiko, chiratidzo chimwechete, nzira dzakazvimirira.
●Multiplexing: inoreva kutumira masaini akawanda akazvimirira panzira imwechete yekufambisa.Ndiko, zviratidzo zvakasiyana, zviteshi zvakajairika.
Pano tinoshandisa tafura kuratidza muchidimbu ukama huri pakati pavo.
| Working mode | Chinangwa | Nzira | Means |
| Kusiyana-siyana | Vandudza kuvimbika | Deredza kupera | nzvimbo-nguva coding |
| Multiplexing | Vandudza throughput | Tora mukana wekudzima | Spatial Multiplexing |
Pakupedzisira, ngatitaure nezve beamforming.Pano isu tichakupawo iyo yakakosha pfungwa: iyo chiratidzo chekugadzirisa tekinoroji inoshandisa sensor array kutumira uye kugamuchira masaini munzira.Iko kuita kuti chiratidzo chinotumirwa neantenna chiwedzere kutungamira, zviri nani kukwanisa kunongedzerwa nemazvo pamushandisi pasina chero simba rekudonha.
● Muchiitiko chekutanga, antenna system inopenya inenge yakaenzana yesimba kumativi ose.Pasinei nechinhambwe pakati pevashandisi vatatu nechiteshi chepasi, kunyangwe mushandisi wega wega anogona kuwana yakaenzana simba rechiratidzo, kuchine huwandu hukuru hwechiratidzo chakapararira munzvimbo yemahara, izvo zvinokonzeresa kuparara kwesimba mu base station.
● Muchiitiko chechipiri, simba remwaranzi yeantenna rakananga zvakanyanya, kureva kuti, simba rakakura sezvinobvira munzira iyo mushandisi aripo uye simba rinenge ragoverwa munzira dzisina basa.Tekinoroji inoumba masaini eantenna ndiyo yatinodaidza kuti beamforming.
4.Zvakanakira MIMO
● Kuvandudza kukwanisa kweChannel
MIMO masisitimu anogona kuwedzera chiteshi chiteshi pasi peyakakwira chiratidzo-kune-ruzha chiyero mamiriro uye inogona kushandiswa pasi pemamiriro ezvinhu apo mupepeti haakwanise kuwana ruzivo rwechiteshi.Inogona zvakare kuwedzera huwandu hwekufambisa kweruzivo pasina kuwedzera bandwidth uye antenna yekufambisa simba, nekudaro ichivandudza zvakanyanya mashandisirwo emagetsi.
●Kuvimbika kwechanero kwakawedzerwa
Kushandisa iyo spatial multiplexing tekinoroji inopihwa neMIMO chiteshi inogona kusimudzira zvakanyanya kugadzikana kweiyo system uye kuwedzera mwero wekutapurirana.
Mhedziso
FDM-6680iredhiyo yakaderera-SWAP, inodhura 2x2 MIMO inopa kufukidzwa kwenguva refu munzvimbo dzakafara dzekushanda ne100-120Mbps data rate.Mamwe mashoko ndapota shanyaIWAVEwebsite.
Nguva yekutumira: Zvita-18-2023
