Nūhou

Hiki ke manaʻo ʻia nā hōʻailona a me ka walaʻau ma ke kamaʻilio ʻana he mau kaʻina hana ʻokoʻa i ʻokoʻa me ka manawa. Loaʻa i ke kaʻina hana maʻamau nā hiʻohiʻona o kahi hoʻololi a me ka hana manawa, a hiki ke wehewehe ʻia mai ʻelua mau manaʻo like ʻole akā pili pili: ① ʻo ke kaʻina hana he hōʻiliʻili o ...

ʻO ke ala kamaʻilio ʻo ia ke ala e hana like ai nā kānaka ʻelua e kamaʻilio pū kekahi i kekahi a hoʻouna paha i nā leka. 1. Simplex, half-duplex a me full-duplex kamaʻilio No ke kamaʻilio kikoʻī, e like me ke kuhikuhi a me ka pilina manawa o ka hoʻouna ʻana i ka memo, ke ʻano kamaʻilio c...

Ma ka ʻōnaehana kamaʻilio kikohoʻe, loaʻa i ka mea hoʻokipa ka huina o ka hōʻailona i hoʻouna ʻia a me ka walaʻau kani. ʻO ka hoʻokipa maikaʻi loa o nā hōʻailona kikohoʻe e pili ana i ka "maikaʻi" criterion me ka liʻiliʻi loa o ka hewa. ʻO nā hewa i manaʻo ʻia ma kēia mokuna ma muli o ka band-limited ...

Fig. 6-6 he kiʻikuhi poloka o ka ʻōnaehana hoʻoili hōʻailona baseband maʻamau. Hoʻokumu nui ʻia me kahi kānana hoʻouna (channel signal generator), kahi ala, kahi kānana hoʻokipa, a me kahi mea hoʻoholo koho. I mea e hōʻoia i ka hilinaʻi a me ka hoʻonohonoho pono o ...

ʻO kahi hōʻailona baseband kikohoʻe he ʻano nalu uila e hōʻike ana i ka ʻike kikohoʻe, hiki ke hōʻike ʻia e nā pae ʻokoʻa a i ʻole nā ​​pulses. Nui nā ʻano o nā hōʻailona baseband kikohoʻe (ma hope aku i kapa ʻia ʻo nā hōʻailona baseband). Hōʻike ke kiʻi 6-1 i kekahi mau ʻano nalu hōʻailona baseband, ...

Hiki ke hoʻokaʻawale ʻia nā hōʻailona hōʻoia i nā hōʻailona ikehu a me nā hōʻailona mana e like me ko lākou ikaika. Hiki ke hoʻokaʻawale ʻia nā hōʻailona mana i nā hōʻailona periodic a me nā hōʻailona aperiodic e like me ka manawa a i ʻole. He palena ʻole ka hōʻailona ikehu i ka amplitude a me ka lōʻihi, ʻo kona ikehu fi ...