Akụkọ

Maka IEEE802.11 protocol na WiFi, a na-eduzi ọnụ ọgụgụ dị ukwuu nke ajụjụ data, na nchịkọta akụkọ ihe mere eme na-achịkọta dị ka ndị a. Nchịkọta na-esonụ abụghị ndekọ zuru oke na nke zuru ezu, kama nkọwa nke usoro iwu eji eme ihe ugbu a n'ahịa. IEEE 802.11, guzobere i...

Kemgbe Agha Ụwa nke Abụọ, e nyela nkwurịta okwu ikuku anya karịa n'ihi ngwa agha ya, bụ nke mere ka njedebe nke mgbasa ozi na gburugburu ebe obibi dịkwuo mma. Kemgbe ahụ, nzikọrịta ozi ikuku na-etolite, mana enweghị oke c ...

Fiber optical bụ ọwa wired maka ibunye akara ngosi anya. Anyị na-akpọ akara ọkụ eletrik na-achọghị na ọwa "mkpọtụ ụda na usoro nkwurịta okwu na-adabere na mgbama. Mgbe enweghị mgbama mgbasa ozi, enwekwara mkpọtụ na sistemụ nkwukọrịta. & #...

Ọwa bụ ngwaọrụ nzikọrịta ozi na-ejikọta njedebe na-ebufe na njedebe nnata, na ọrụ ya bụ ịnyefe akara site na njedebe na-ebufe na njedebe nnata. Dabere na mgbasa ozi mgbasa ozi dị iche iche, enwere ike kewaa ọwa ụzọ abụọ: ọwa ikuku na wired ...

N'isiokwu a, m ga-ekwu maka nkwurịta okwu System Model na nkọwa gụnyere 5 akụkụ ha, (1) Source codeing na decoding, (2) Encoding na decoding nke ọwa, (3) Encryption na decryption, (4) Digital modulation na demodulation, (5) Mmekọrịta. Ka anyi mikpuo miri̷...

1. Nhazi azụmahịa nkwurịta okwu Dị ka ụdị ọrụ nkwurịta okwu dị iche iche si dị, enwere ike kewaa usoro nkwurịta okwu na usoro nkwurịta okwu telegraph, usoro nkwurịta okwu ekwentị, usoro nkwurịta okwu data, na usoro nkwurịta okwu oyiyi. N'ihi na kọntaktị ekwentị ...