MANET yog hom tshiab ntawm broadband wireless mesh network raws li ad hoc networking txoj kev. Raws li lub xov tooj ntawm tes ad hoc network, MANET yog ywj siab ntawm cov txheej txheem network uas twb muaj lawm thiab txhawb nqa txhua lub network topology.
Tsis zoo li ib txwm wireless tes hauj lwm nrog centralized hubs (chaw nres tsheb hauv paus), MANET yog ib tug decentralized kev sib txuas lus network. Tsim los nrog lub tswv yim tshiab decentralized mesh network, nws yog ib qho kev faib tawm, faib wireless broadband kev sib txuas lus uas muaj ntau lub plhaw relaying, dynamic routing, muaj zog resilience, thiab zoo heev scalability. Lub network txhawb nqa txhua qhov topology thiab, dhau los ntawm kev ua haujlwm tshwj xeeb, ua kom cov ntaub ntawv sib txuas lus thiab ntau yam kev pabcuam cuam tshuam ntawm lub network nodes ntawm wireless multi-hop forwarding ntawm cov nyob ib sab.
MANET muaj cov txiaj ntsig zoo xws li kev xa khoom qis thiab kev saib xyuas tus nqi, kev pabcuam dav dav, kev kub ceev, kev sib koom tes ruaj khov, muaj zog yoog raws, thiab txuas kev paub txog tus kheej thiab kho tus kheej. Nws tuaj yeem ua haujlwm raws li ob qho tib si kev ywj pheej wireless ad hoc network thiab ua kom muaj txiaj ntsig zoo thiab txuas ntxiv rau cov kab ke sib txawv uas twb muaj lawm.
MANET tuaj yeem siv dav hauv kev sib txuas lus thaum muaj xwm txheej ceev, kev lag luam cov ntaub ntawv xov xwm, kev sib txuas hauv cheeb tsam broadband, wireless saib xyuas tes hauj lwm, kev sib koom tes tswj kev sib koom tes thiab kev sib txuas lus ntse.
MIMO(Multiple Input Multiple Output)
MIMO (Multiple Input Multiple Output) thev naus laus zis siv ntau qhov kev xa tawm thiab txais cov kav hlau txais xov ntawm lub transmitter thiab receiver, ntsig txog, tso cai rau cov teeb liab xa mus thiab tau txais los ntawm cov kav hlau txais xov, tsim ntau txoj hauv kev ntawm lub transmitter thiab receiver rau cov ntaub ntawv xa mus.
Lub ntsiab lus ntawm MIMO thev naus laus zis yog kev siv ntau lub kav hlau txais xov los muab ntau hom kev nce qib (spatial diversity) thiab multiplexing nce (spatial multiplexing). Tus qub ua kom lub cev muaj kev ntseeg siab, thaum lub sijhawm tom kawg ua rau qhov system kis tau tus nqi.
Spatial diversity tseem ceeb muab ntau yam, ntawm nws tus kheej faded luam theej ntawm cov ntaub ntawv cim rau tus neeg txais, txo qhov tshwm sim ntawm cov teeb liab sib sib zog nqus ploj mus, yog li txhim kho kev ua haujlwm thiab txhim kho kev sib kis kev ntseeg tau thiab muaj zog. Hauv MIMO system, fading yog ywj siab rau txhua khub ntawm kev xa tawm thiab tau txais cov kav hlau txais xov. Yog li ntawd, MIMO channel tuaj yeem pom raws li ntau qhov sib npaug sib npaug ntawm cov subchannels. Spatial multiplexing suav nrog kev xa cov ntaub ntawv sib txawv raws li ntau txoj kev ywj pheej, kev sib luag, ua kom muaj peev xwm nce ntxiv. Nyob rau hauv txoj kev xav, lub peev xwm channel ntawm MIMO system tuaj yeem nce linearly nrog tus naj npawb ntawm kev xa tawm thiab tau txais cov kav hlau txais xov.
MIMO thev naus laus zis muab ob qho tib si spatial ntau haiv neeg thiab spatial multiplexing, tab sis muaj kev lag luam tawm ntawm ob. Los ntawm kev siv ob qho tib si ntau haiv neeg thiab multiplexing hom hauv MIMO system, qhov kev nce qib tuaj yeem ua kom tiav, ua tiav ob qho kev ntseeg siab thiab kev ua haujlwm tau zoo thaum siv tag nrho cov peev txheej spectrum uas twb muaj lawm. Qhov no los ntawm tus nqi ntawm kev ua haujlwm nyuaj ntawm ob qho tib si transmitter thiab receiver.
MIMO thev naus laus zis thiab MANET thev naus laus zis yog ob ntawm cov thev naus laus zis tseem ceeb hauv kev sib txuas lus wireless tam sim no thiab tau txais los ntawm ntau lub tshuab sib txuas lus wireless.
Hais txog IWAVE
Tau ntau xyoo dhau los, IWAVE tau mob siab rau kev tshawb fawb ywj pheej thiab kev txhim kho ntawm cov kws tshaj lij-qib wireless kev sib txuas lus thev naus laus zis. Los ntawm tsis tu ncua thawb cov ciam teb ntawm cov kev qhia tshwj xeeb uas twb muaj lawm thiab tsis tu ncua nws cov txheej txheem thev naus laus zis MANET, tam sim no lub tuam txhab muaj cov ntaub ntawv nthuav dav ntawm MANET waveforms nrog ua tiav cov tswv cuab kev txawj ntse, muaj feem xyuam rau ntau yam.
Los ntawm kev muab cov neeg siv khoom muaj txiaj ntsig, ruaj ntseg, thiab muaj kev ywj pheej ntawm kev sib txuas lus kev sib txuas lus thiab cov khoom lag luam, peb txhawb cov neeg siv nrog nrawm, ua haujlwm tau zoo, thiab ua kom zoo nkauj lub suab, cov ntaub ntawv, video, thiab pom kev hais kom ua thiab xa cov peev txheej, leveraging lub zog ntawm Suav ntse tsim. Qhov no tso cai rau cov neeg siv kom ua tiav "kev sib txuas txhua lub sijhawm, nyob qhov twg, thiab ntawm lawv qhov yooj yim" hauv ntau qhov xwm txheej.
Post lub sij hawm: Sep-19-2025
