Akụkọ

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...

Sistemu PON na-anabata teknụzụ multiplexing nkewa oge na ụzọ mgbago elu, na ONU na-eziga datagram na ntụzịaka elu dị ka stampụ oge nke OLT kenyere. Mgbe ONU na-ekunye ọkụ na-enyeghị stampụ oge, ọ ga-emegide mgbama mpụta nke ndị ọzọ na...

Site na mmepe nke usoro nkwurịta okwu ngwa anya na ogologo anya, ikike ka ukwuu, na ọsọ dị elu, karịsịa mgbe otu ebili mmiri na-esi na 40g ruo 100g ma ọ bụ ọbụna 100g dị elu, mgbasa ozi chromatic, mmetụta ndị na-adịghị na ntanetị, mgbasa ozi polarization mode, na mmetụta mgbasa ozi ndị ọzọ. ..