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Munkhaniyi ndikamba za Communication System Model mwatsatanetsatane ndikuphatikiza magawo awo a 5, (1) Coding source ndi decoding, (2) Encoding and decoding of channels, (3) Encryption and decryption, (4) Digital modulation and kutsitsa, (5) Kulunzanitsa. Tiyeni tigwere mozama̷...

1. Gulu la bizinesi yolumikizirana Malinga ndi mitundu yosiyanasiyana ya mautumiki olumikizirana, njira zoyankhulirana zitha kugawidwa m'machitidwe olumikizirana ndi telegraph, njira zoyankhulirana ndi telefoni, njira zolumikizirana ndi data, ndi njira zolumikizirana ndi zithunzi. Chifukwa mafoni amalumikizana ...

Zonse ziwiri za chizindikiro ndi phokoso mukulankhulana zitha kuonedwa ngati njira zachisawawa zomwe zimasiyana ndi nthawi. Zomwe zimachitika mwachisawawa zimakhala ndi mawonekedwe osinthika mwachisawawa komanso momwe zimagwirira ntchito nthawi, ndipo zitha kufotokozedwa kuchokera kumitundu iwiri yosiyana koma yogwirizana kwambiri: ① ndondomeko yachisawawa ndi gulu la...

Njira yolankhulirana ndiyo njira imene anthu awiriwa amachitira zinthu limodzi kapena kutumiza mauthenga. 1. Kuyankhulana kwa Simplex, theka-duplex ndi full-duplex Kuyankhulana kwa mfundo ndi mfundo, molingana ndi malangizo ndi nthawi yotumizira uthenga, njira yolankhulirana c...

Mu njira yolumikizirana ya digito, wolandila amalandira kuchuluka kwa siginecha yotumizidwa ndi phokoso lanjira. Kulandila koyenera kwa ma sigino a digito kutengera muyeso "wabwino" wokhala ndi cholakwika chochepa kwambiri. Zolakwa zomwe zafotokozedwa m'mutuwu ndi chifukwa cha kuchepa kwa band ...

Mkuyu 6-6 ndi chipika chithunzi cha mmene digito baseband chizindikiro kufala dongosolo. Imapangidwa makamaka ndi fyuluta yopatsira (chopanga chizindikiro cha tchanelo), tchanelo, zosefera zolandirira alendo, ndi chosankha chazitsanzo. Pofuna kuonetsetsa kuti ntchito yodalirika ndi yadongosolo...