Ọmụma

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 ...

Enwere ike iweta ma mgbaama na mkpọtụ na nzikọrịta ozi dị ka usoro enweghị usoro na-adịgasị iche na oge. Usoro random nwere njirimara nke mgbanwe na-enweghị usoro na ọrụ oge, a pụkwara ịkọwa ya site n'echiche abụọ dị iche iche ma nwee njikọ chiri anya: ① ​​usoro random bụ nchịkọta nke na ...

Usoro nzikọrịta ozi bụ ụzọ ndị mmadụ abụọ na-ekwurịta okwu si arụkọ ọrụ ọnụ ma ọ bụ zipu ozi. 1. Simplex, ọkara-duplex na zuru-duplex nkwurịta okwu Maka nkwurịta okwu n'ókè-na-point, dị ka ntụziaka na oge mmekọrịta nke nnyefe ozi, nkwurịta okwu mode c ...