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Chiratidzo chedhijitari baseband igetsi waveform inomiririra ruzivo rwedhijitari, iyo inogona kumiririrwa neakasiyana mazinga kana pulses. Kune akawanda marudzi edhijitari baseband masaini (pano anonzi masaini ebhendi). Mufananidzo 6-1 inoratidza mashoma ekutanga baseband signal waveforms, ...

Zviratidzo zvekubvuma zvinogona kukamurwa kuva zviratidzo zvesimba uye zviratidzo zvesimba maererano nemasimba avo. Masaini emagetsi anogona kukamurwa kuita masaini eperiodic uye aperiodic masaini zvichienderana nekuti ari periodic here kana kwete. Chiratidzo chesimba chinopera muamplitude uye nguva, simba rayo rinokwana ...

Kana iyo yekufambisa chiteshi chechani chemuviri chakakwira kupfuura kudiwa kwechiratidzo chimwe, chiteshi chinogona kugovaniswa nemasaini akawanda. Semuenzaniso, trunk line yenharembozha kazhinji ine zviuru zvezviratidzo zvinofambiswa pane imwe optical fiber. Multiplexing ndiyo tekinoroji inogadzirisa ...

1) Iyo AMI kodhi Zita rakazara reiyo AMI (Alternative Mark Inversion) kodhi ndiyo alternate mark inversion kodhi. blank) inoramba isina kuchinjwa. Eg: Kodhi yemeseji: 0 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1… AMI kodhi: 0 -1 +1 0 0 0 0 0 0 0 0 -1 +1 0 0 -1 +1… The waveform inoenderana neiyo AMI kodhi ndeye ...

Apo patinotumira chiratidzo, kana chiri chiratidzo chemaziso, chiratidzo chemagetsi, kana chikwangwani chisina wire, kana chikatumirwa zvakananga, chiratidzo chinovhiringidzwa nyore nyore neruzha, uye zvakaoma kuwana ruzivo rwakarurama pamagumo ekugamuchira. Kuti uvandudze anti-kupindira abilit ...

Nzira dzekutanga dzebhinari yedhijitari modulation ndeiyi: Binary amplitude keying (2ASK) -kushanduka kweamplitude yechiratidzo chekutakura; Binary frequency shift keying (2FSK) - frequency shanduko yechiratidzo chekutakura; Binary phase shift keying (2PSK)—chikamu chekuchinja kwechiratidzo chekutakura. Differential phase shift keyin...