Lub peev xwm channel, C, txhais tau tias yog tus nqi siab tshaj plaws uas cov ntaub ntawv tuaj yeem xa mus los ntawm ib tus channelLub ntsiab lus ntawm cov ntaub ntawv kev tshawb xav hais tias ntawm tus nqi hauv qab no muaj peev xwm, qhov yuam kev tswj code tuaj yeem tsim los uas qhov tshwm sim ntawm qhov yuam kev yog qhov me me.
Kev sib txuas lus channel muaj peev xwm yog dab tsi?
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channel muaj peev xwm, hauv hluav taws xob engineering, khoos phis tawj science, thiab cov ntaub ntawv kev tshawb fawb, yogntawm cov ntaub ntawv tuaj yeem sib txuas lus.
txhais tau li cas los ntawm kev muaj peev xwm channel thiab kev sib tw?
Channel multiplexing yog txheej txheem ntawm kev sib cais lossis sib koom lub peev xwm ntawm kev kub ceev channel / kev sib txuas lus sib txuas los tsim ntau lub peev xwm qis / qis ceev sub-channels. Txhua qhov sub-channel no tuaj yeem siv los ntawm ntau qhov kawg ntawm cov kab sib txuas ua ke.
channel muaj peev xwm suav li cas?
Raws li channel muaj peev xwm sib npaug, C=B log(1 + S / N), C-muaj peev xwm, B-bandwidth ntawm channel, S-lub zog hluav taws xob, N- suab nrov zog, thaum B -> infinity (nyeem B 'zoo li' infinity), muaj peev xwm saturates rau 1.44S/N.
Kuv tuaj yeem nce kuv qhov peev xwm channel li cas?
Vim li ntawd, MIMO thev naus laus zis muaj peev xwm ua kom muaj peev xwm ntawm cov channel muab thaum ua raws li Shannon-Hartley qhov sib npaug. Los ntawm kev nce tus naj npawb ntawm kev xa tawm thiab tau txais cov kav hlau txais xov, 2 x 2 MIMO system ua haujlwm tau zoo dua ob npaug ntawm cov ntaub ntawv siab tshaj plaws ntawm qhov tuaj yeem ua tiav hauv ib txwm RF channel.
