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Mgbama baseband dijitalụ bụ ụdị ọkụ eletrik na-anọchi anya ozi dijitalụ, nke enwere ike ịnọchite anya ọkwa dị iche iche ma ọ bụ usu. Enwere ọtụtụ ụdị akara ngosi baseband dijitalụ (nke a na-akpọ akara ngosi baseband). Onyonyo 6-1 na-egosi ụdị mgbama mgbama baseband ole na ole, ...

Enwere ike kewaa akara nnabata na akara ike na akara ike dịka ike ha siri dị. Enwere ike ikewa akara ngosi ike ka ọ bụrụ akara oge yana akara oge dịka ma ọ bụ nke oge ma ọ bụ na ọ bụghị. Mgbama ume bụ njedebe na njupụta na ogologo oge, ike ya bụ fi ...

Mgbe ike nnyefe nke ọwa anụ ahụ dị elu karịa ọchịchọ nke otu mgbaàmà, enwere ike ịkekọrịta ọwa site na ọtụtụ akara. Dị ka ihe atụ, eriri akpati ekwentị na-enwekarị ọtụtụ puku akara ndị a na-ebunye n'otu eriri anya. Multiplexing bụ nkà na ụzụ nke na-edozi ...

1) Koodu AMI Aha zuru oke nke koodu AMI (Alternative Mark Inversion) bụ koodu ngbanwe akara ọzọ. oghere) nọgide na-agbanweghị agbanwe. Dịka ọmụmaatụ: Koodu ozi: 0 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1… Koodu AMI: 0 -1 +1 0 0 0 0 0 0 0 0 -1 +1 0 0 -1 +1… kwekọrọ na koodu AMI bụ ...

Mgbe anyị na-ebufe mgbaama, ma ọ bụ mgbama ngwa anya, mgbama eletriki, ma ọ bụ akara ikuku, ọ bụrụ na ebufere ya ozugbo, mkpọtụ na-eme ka mgbama ahụ nwee nsogbu, ọ na-esikwa ike ịnweta ozi ziri ezi na njedebe nnata. Iji kwalite ikike mgbochi nnyonye anya...

Ụdị nkiti nke ọnụọgụ dijitalụ ọnụọgụ abụọ bụ: ọnụọgụ ọnụọgụ ọnụọgụ abụọ (2ASK) - mgbanwe njupụta nke mgbaàmà ụgbọelu; Igodo mgbanwe ọnụọgụ ọnụọgụ abụọ (2FSK) - mgbanwe ugboro ugboro nke mgbaàmà ụgbọelu; igodo ọnụọgụ ọnụọgụ abụọ (2PSK) - mgbanwe nke mgbama ụgbọelu. Ọkpụkpụ ngbanwe nke usoro...