Tupu ịghọta teknụzụ Pam4, gịnị bụ teknụzụ ngbanwe? Teknụzụ Mgbanwe bụ usoro nke ịtụgharị akara bata (akara eletrik) ka ọ bụrụ akara nnyenaaka. Iji hụ na arụmọrụ nkwukọrịta ma merie nsogbu na nnyefe ogologo oge, ọ dị mkpa iji nyefee ụdị mgbaama na ọwa dị elu site na mmezi maka ngbanwe maka nnyefe.
Pam4 bụ usoro nke anọ na-agbanwe agbanwe (Pam) usoro mgbanwe.
Nkwekọrịta PAMAL bụ teknụzụ nzipu ozi a ma ama mgbe NRZ (nloghachi na efu).
Nrịba ama Nrz na-eji ọkwa mgbaama abụọ, dị elu na ala, na-anọchi anya akara akara dijitalụ, ma nwee ike ibunye 1 bit nke ozi ezighi ezi n'otu usoro.
Mpempe akwụkwọ mgbaàmà dị iche iche na-eji 4 maka nnyefe mgbaama maka mgbaama, yana usoro elekere ọ bụla nwere ike bufee 2 nkọ nke ezighi ezi, ya bụ, 01, 10, na 11.
Ya mere, n'okpuru otu ọnụego ọnụego baud, ọnụego nke Pamm bụ ugboro abụọ nke mgbama Nrz, nke na-ebelata ụgwọ ọrụ na-ebelata ụgwọ ọrụ.
Teknụzụ nke Text na-eji ọtụtụ teknụzụ mgbaàmà dị elu dị elu. Ka ọ dị ugbu a, enwere modul transperever nke 400g dabere na teknụzụ mpempe akwụkwọ Pam4 na 50G site na sodul transceiver dabere na teknụzụ ntụgharị nke 5G.
Usoro mmejuputa usoro nke 400g DML site na Ngbanwe nke Pam4 na-esote: Mgbe onye na-ebugharị ihe na - eme ihe na - eme ihe, na ngbanwe nke 5G pam4, nke a na - ebute na mgbawa ọkwọ ụgbọala. A na-agbanwe akara eletriki dị elu ruo ọwa nke 50gbps dị elu site na ọwa mmiri, jikọtara ya na ọwa mmiri nke 400g na-agba ọsọ ọsọ. Mgbe nnata akara ngosi, onye natara 1-Channel 400G dị elu site na ngwa ọdịnala 50GB na-agba ọsọ ọsọ, ma gbanwee site na mgbama eletriki. Mgbe elekere elekere gachara, amplition, nhapụ, na mgbapụta nhazi Pam psp, a na-agbanwe akara eletriki ka ọ bụrụ ihe mgbaàmà nke 25g nrz nrz nrz nrz.
Tinye usoro teknụzụ Pam4 na usoro ihe eji eme ihe. Modulu 400GB / S nwere ike belata ọnụ ọgụgụ nke lasers achọrọ na njedebe nke ndị na-anabataghị na njedebe nke usoro mgbanwe dị elu ma e jiri NRZ. Ngbanwe nke ngwa anya na-ebelata ọnụ ọgụgụ nke ngwa anya na modul dị ka ala Mountaint, belata ike ike, na nha nkwakọba.
Enwere ihe achọrọ maka modulu 50gbical / sọsọ na azụ na netwọkụ, na usoro mgbanwe nke usoro ihe dị mfe iji nweta ihe dị ala na nnukwu bandwidth.
Mgbe ị na-akọwa akara pam-4, ọ dị mkpa ị toa ntị na ọdịiche dị n'etiti ọnụego mbibi na ọnụego bit. Maka akara ngosi Nrz, ebe ọ bụ na otu akara na-enyefe otu bit nke data, ọnụego na ọnụego ya bụ otu. Dịka ọmụmaatụ, na 100g Ethernet, na-eji akara anọ 25.7812222222222222SPS ọ bụla bụ 25.7812SPS, na akara ngosi anọ ahụ rụpụtara 100GBPS mgbapụta 100GBPS; Maka akara pam-4, ebe ọ bụ na otu akara na-enyefe 2 nkọ nke data, ọnụego bit nke enwere ike ibufee bụ okpukpu abụọ. Dịka ọmụmaatụ, ọ bụla site na ọwa nke 26.5625GBAud mgbaama maka nnyefe, ọnụego ya na ọwa ọ bụla bụ 53.125GB, na ọwa nke akara nwere ike nweta nnyefe mgbapụta 200GB. Maka 400G Ethernet, enwere ike inweta ya na ọwa 8.5625GAud.
Oge post: Jan-02-2025