Modulation - he ... lāʻau ikiʻai wale laula modulation

Ka wā 'alo i ka maʻamau o ke ola me ka hou manaÿo, he nui loa e ho'āʻo ana e imi pane i kā lākou mau nīnau. No keia mea mea mea pono e wehewehe i kekahi kŰia. Kekahi o ia mea e like me ka mea i modulation. About ia ia, a ana au i ke hou ia.

mau hōʻikeʻano

Modulation - o ke kaʻina hana o ka hoʻololi 'ana i kekahi a me ka pau' ia paha o nā mea kiko'î o kiʻekiʻe-alapine (frequency) oscillations ma e like me ke kānāwai o ka hana 'ike o ka memo. Kēia hualoaʻa ma ka hoolilo o ka pae ana o ke ana neaiaea i loko o ka kiʻekiʻe alapine'āina, mai ka mana makahiki i loko o ka ka hoʻoleleʻana koi ana a pau transceivers hoʻohana i kekahi mau alapine me ka 'aʻole kekahi i kekahi. Ma kēia kaʻina hana, ua hoʻonoho 'ike kuekueni ma ka lawe, i ike ia he priori. Ka hooponopono neaiae he 'ike pū i hiki. High-alapine (frequency) oscillations i ke kūlana o ka lawe o ka 'ike, ma laila loaʻa iā ia kekahi i ke kūlana o ka lawe. Ka hooponopono neaiaea ho'īliʻikepili ua waiho. Aia mauʻano o ka modulation e hilinaʻi ma ka ano o ka waveform hoʻohana: huinahń loa, triangular, a me kekahi 'ē aʻe. I ka wa kikohoʻe lepa , e kamaʻilio e pili ana i manipulation. Penei, modulation - he aʻee komo nei kuekueni, no laila ia i e alapine (frequency), ikaika hawewe, pae, a me na mea e ae.

? ueo

Ano, e hiki ke ike i ke ano o kaʻike manaʻo nei. I mea, o ka modulation - he kaʻina hana i loko i ke kiʻekiʻe-alapine nalu ua hoolilo. Loa pinepine, i ka i kēia ke ano: alapine (frequency), ikaika hawewe a me ka pae. I ka alapine (frequency) modulation ia lŘlŘ ka loli ma ka alapine (frequency), a me ka ikaika hawewe - ikaika hawewe akā, me ka pae - pae. Aia i hui wale. Akea modulation a me ka hoʻololi 'pili ana i ka hoʻokaʻawale? Ueo. Ma kēia hihia, na mea kiko'î o kiʻekiʻe-alapine (frequency) kuekueni hoʻololi i discretely.

ikaika hawewe modulation

Ma nenoai me kēia 'ano o ka loli o ka loli o ka ikaika hawewe i ka lawe nalu i ke alapine (frequency) kiʻekiʻe ma ke kumu o ka pē mālie nalu. I ka wā o ka auoiaea alapine Ka Ikepili hoike ole wale no ka hoʻokomo o alapine (frequency), akā, me ko lakou huina a me ka laua koena unuhi. Ma keia hihia, ina o ka modulation - o ka luna 'nalu, like, no kekahi laʻana, olelo mau lepa a oia hoi o ka ai iiiaanoaa o nä alapine, ka mea e lawe mau auka e paa ai, kekahi ma lalo o ka lawe, a me ka lua o ka hoa a hiki i ka huina a me ka unuhi nä alapine. Ka mea, i kapaʻia kīloi paʻewa: luna, a malalo. Mua - he mea koe o ka palapala nā leo neaiae 'oni iki ma kekahi mau' alapine (frequency). Na lalo poʻe - he kope o ka palapala neaiaea a i hala i ka hahana, i mea, o ka mua kiʻekiʻe nä alapine - he haʻahaʻa alapine (frequency) i loko o kaʻaoʻao lalo.

I ka laloʻaoʻao mea he aniani kiʻi o ke keenaʻaoʻao pili ana i ka lawe alapine (frequency). System hoʻohana ikaika hawewe modulation, ka EYI lawe, a me ka mauʻaoʻao, i kapaʻia ka elua-Lane. Ke lawe Aʻole ole no kekahi mau mea kōkua 'ike, no laila ka mea, hiki ke wehe' ia, akā, ma kekahi hihia, o ka hoailona koa ua oi palua ka mua. Hou i ke koa, ua loaʻa ma ka pau ka ole wale ke kākoʻo, akā, i kekahi o kaʻaoʻao, e like me kekahi'āpana o ka 'ike i loko o na ia. Kēia? Ueo ua ikeia me he hookahi-sideband modulation me ka uhi pū lawe.

demodulation

Kēia kaʻina Pono hoʻohuihui ka pē neaiaea me ka lawe ana o ka mea hookahi alapine (frequency) i ke kinoea ma ka modulator. Mahope, i ka mua neaiae ua loaa ma ke ano o ka hookaawale alapine (frequency) a alapine (frequency) koa, a laila, wae 'ia mai ka' ē aʻe no lepa. I kekahi manawa, i ka hanauna o ka lawe no ka demodulation ke ahaʻia ma luna o ka honua, oiai ka mea, aole e mau coincide me ka lawe alapine (frequency) i ka modulator. Aie i ka poe uuku a likeʻole ma waena o nā nä alapine ikea mismatches, i mea typical no ka kelepona wahi i puhi ai.

lāʻau ikiʻai wale modulation

Ma keia hihia, he kikohoʻe baseband hoailona, a laila ka mea, e leie aku e encode oi ma mua o kekahi iki no baud ma ka hoʻopā'ālua aeaieʻikepili neaiaea i mau pae. Nā'āpana o ka aeaie neaiae ua i kekahi manawa puunaueia i hui. No ka paʻa o ka eha iki puʻano hiki ke hoʻohana ', ai kēlā me kēia mau ua poe ma kekahi o na pae eha ikaika hawewe. Oia ka encoded peahi ana wehewehe aku i loko i ke modulation ana o ka hapalua o ka baud ana o ka palapalaʻikepili neaiaea, no laila ka mea, hiki ke hoʻohana no ka ikaika hawewe modulation i loko o kaʻike mau ano. Kona noi ua loaʻa i ka Radio palapala.

alapine (frequency) modulation

Systems me ka modulation kuhi i ka lawe alapine E oko a pela me ke kinona o ka pē mālie neaiaea. Kēiaʻano iʻoi aʻe ma ka hua'ōlelo o ke kumupaʻa o ka ikaika hawewe e hoʻoholo i ka hopena ma luna o ka na kelepona pukapuka, no laila ia e ke hoʻohana i haʻahaʻa ka māmā holo, ma kahi o ka pono, e pū i ka nui bandwidth.

Pae-ikaika hawewe modulation

E hoomahuahua i ka helu o nā'āpana no baud i e hui pae a me ka ikaika hawewe modulation.

E like me kekahi o nā laekahi 'ano o ka ikaika hawewe-pae modulation hiki e hoike ia kekahi i ka nānā' ana i multicarrier EYI. No ka laʻana, ma kekahi palapala noi i ka lawe 48 kaawale ma ka loloa o 45 Hz. Ma ka hoʻohuiʻia ka ikaika hawewe a me ka pae modulation no kēlā me kēia lawe ua anao? Aou ia 32 discrete Hawaii ma kela a me keia baud au i hoʻokaʻawale, e ka mea e hiki ai ke lawe 5'āpana no baud. Ua huli mai i keia huapalapala a pau e leie aku oe, e hoolilo 240'āpana no baud. A hiki ke hoʻohana i 9600 iki / s modulation i kela pono he 40 baud. Kēia haʻahaʻa huahelu Ua tolerant o ka ikaika hawewe a me ka pae Lele hoʻomaopop 'ana i ke kelepona i ulanaʻia.

Kivila mai impulse modulation

Kēiaʻano ua ana manaʻo like me ka'ōnaehana no ka hoʻoleleʻana Analog lepa, e laʻa me, he leo digitally. Kēia modulationʻano hana ua ole ia i loko o modems. Here gating ia lŘlŘ Analog neaiaea ma ka uku palua ia i ka lani kiekie loa alapine ke keʻena neaiaea i loko o Analog palapala. I ka hoʻohana 'ana i ia mau nenoai ma kelepona latike gating ia lŘlŘ 8000 manawa no kekona. Kēlā me kēia hāpana - o ke anakahi uila kaʻilikai encoded ehiku iki kuhi. I kahi momona a ho i ka 'ōlelo Hawaiʻi, hoʻopā'ālua ua i hoʻohana logarithmically. ʻEhiku mau'āpana pu me ka walu o ka olelo ana i ke alo o ka hoailona i hana octet.

modulation a me ka loaʻaʻana ua koi e hoihoi i ka memo neaiaea, i mea nana e hoole i ke kaʻina. A pau keia neaiae ua hoohuliia ma ke nonlinear ano. Nonlinear hehee wale hoʻolako hou pae eiiiiiaiou o ka pae o ka auoiaea neaiaea, a ua hoʻohana kānana e kaʻawale haʻahaʻa alapine (frequency) eiiiiiaiou. Modulation a me ka loaʻaʻana hiki ke hana hoʻohana holo diodes, transistors, mea uholo uila diode like me ka nonlinear hehee ai. Mea maʻa mau hoʻohana 'kiko mea uholo uila diodes, mahope mai o ka planar hoʻokomo o capacitance mea nui nui.

kēia 'ano

Digital modulation hoʻolako hiki nui 'ike' auhau a me ka mea hana maʻalahi me keʻano o ka mīkini ikepili lawelawe. Ma waho aʻeo me ke kōkua o ka palekanaʻikepili iaono? Ienoai,? Ienoai aa ka pono ka mākau hoʻokaʻaʻike nenoai, a hōʻeleu i komo i ka ia.

He nui na nā palenaʻalo e akamai o kekahi nenoai: ana ka mana a me ka alapine (frequency) bana laula, he hoʻoholo ma mua halulu pae kamaʻilio nenoai. ʻO kēlā lā i ka helu o nā mea hoʻohana o nā palapala 'oihana, e like me ka pono me he lālā hua koi no ia, i pono ka hua i loko o ka Radio puke. Digital modulation mea markedly okoa mai ka Analog no laila, i ka lawe ia ia? Aaeaao nui dala o ka 'ike.

ka manaʻo pohihihi o ka i

Nā haku polokalamu o kikohoʻe Radio nenoai mea e like me ka papa kuhikuhi hana - e 'imi i kaʻae like hoʻokuʻu ma kahai ma waena o ka laula o kaʻikepili ka hoʻoleleʻana bana a me ka ka manaʻo pohihihi o ka'ōnaehana technically. No keia hopena, kūpono ana kekahi modulation i kūpono e kiʻi i ka makemake hopena. Radio kamaʻilio hiki ke hoʻonohonoho 'ia ma ka hoʻohana lēkio leo poe noonoo ole a me ka pa alima circuitry, akā, i ke alapine (frequency) pae ka hapaʻauhau i ka helu ana o na hoa e e hoʻohana' ia no ia mau palapala. No ka hou eiiieaena transmitters a me ka pa alima i kauoha mai emi bandwidth no ka ike hōʻike ma ka ia buke. E neʻe i ka spectrally efficient EYI i kūpono e pono ai e complicate i ka lako a me. Kēia pilikia 'Aʻole i hilinaʻi ma luna o ka ' ano o ka 'ōlelo.

ka papa haʻawina

Lāʻau ikiʻai wale laula modulation ua wehewehe aku i loko i kona lawe neaiae ho i ke kaʻina o nā lāʻau ikiʻai wale, kahi o ka lāʻau ikiʻai wale alapine mea ikaika. Nā loli e hopohopo nei wale i ka lōʻihi o kēlā me kēia lāʻau ikiʻai wale o ka pē mālie neaiaea, niioaaonoaaiii.

Lāʻau ikiʻai wale laula modulation mea okoa mai ka alapine (frequency) pae. Ka hope komo ai i ka modulation neaiaea like me ka sine hawewe. Ua Ua wehewehe aku ma kekahi mau ikaika hawewe, a ee iaaanu aey alapine (frequency) a pae. Ka lāʻau ikiʻai mau lepa a hiki i ke pē mālie ma ka alapine (frequency). Ua hiki e ka paa pana lōʻihi like 'ole, a me kā lākou mau alapine (frequency) i loko o kekahi awelika waiwai, akā, me ko lakou instantaneous waiwai, e oko ma ka pē mālie no lepa.

mea, ua ulu

He hiki ke hoʻohana alodio modulationʻAno, a me hoʻokahi wale nō aiao E oko a pela me ka pē mālie 'ikepili. Alu modulation noaia i ua hoʻohana 'ia i loko o kēia ipu no ka palapala, - ka wā he mea kekahi i ka wā hoʻokahi loli a me ka ikaika hawewe a me ka lawe pae. Ma kēia nenoai hiki ke hoʻohana 'mau subcarriers, kela mea keia mea o ka i hoʻohana i kekahiʻano o ka modulation. Ma keia hihia, ia mea he hōʻailona modulation manaʻo. Kēia manawa ua hoʻohana 'ia no ka luna' multilevel? Ueo e noi aku i nā hiʻona e e exhaustive hōʻikeʻano ike.

I kēia kamaʻilio nenoai Hoʻohana i ka loa efficientʻano o ka modulation, hiki minimizing ka bandwidth hoakaka i noa alapine (frequency) i manawa no nā 'ano o nā lepa. Mea e like ai nā loulou mai ia wale nō Amelika Huipû, akā, ma kēia hihia o ka ka manaʻo pohihihi o ka ipu ka loa kiʻekiʻe. Ultimately, ka modulation alapine (frequency) i hāʻawi mai i ka hopena hiki wale i ka hopena hoʻohana i ka hua'ōlelo o ka pono o ka i ana iiaie oaoieeiʻano.