{"id":47375,"date":"2023-10-02T17:22:20","date_gmt":"2023-10-02T09:22:20","guid":{"rendered":"\/\/www.viralrail.com\/?p=47375"},"modified":"2023-10-02T17:22:20","modified_gmt":"2023-10-02T09:22:20","slug":"bxxdrlgs","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/47375.html","title":{"rendered":"\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f"},"content":{"rendered":"

  \u4fe1\u9053\u5bb9\u91cf\u662f\u6307\u5728\u4fe1\u9053\u4e0a\u4f20\u8f93\u4fe1\u53f7\u7684\u6700\u5927\u901f\u7387\uff0c\u4e5f\u5c31\u662f\u4fe1\u53f7\u53ef\u4ee5\u5728\u4fe1\u9053\u4e0a\u4ee5\u6700\u5927\u901f\u7387\u4f20\u8f93\u6240\u9700\u8981\u7684\u6700\u5c0f\u4fe1\u606f\u71b5\u3002\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u662f\u8ba1\u7b97\u4fe1\u9053\u5bb9\u91cf\u7684\u91cd\u8981\u65b9\u6cd5\uff0c\u5b83\u662f\u7531\u7f8e\u56fd\u6570\u5b66\u5bb6Claude Shannon\u57281948\u5e74\u63d0\u51fa\u7684\u3002\u672c\u6587\u5c06\u6df1\u5165\u8ba8\u8bba\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u7684\u6982\u5ff5\u548c\u5e94\u7528\u3002<\/p>\n

\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u7684\u6982\u5ff5<\/h2>\n

  \u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u7684\u6982\u5ff5\u662f\u4ece\u4fe1\u9053\u5bb9\u91cf\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u628a\u4fe1\u9053\u5bb9\u91cf\u5206\u89e3\u6210\u4e00\u4e2a\u516c\u5f0f\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u7406\u89e3\u548c\u8ba1\u7b97\u4fe1\u9053\u5bb9\u91cf\u3002\u6839\u636eShannon\u5b9a\u7406\uff0c\u4fe1\u9053\u5bb9\u91cf\u53ef\u4ee5\u8868\u793a\u4e3a\uff1a<\/p>\n

  C = B log2<\/sub>(1 + S\/N)<\/h3>\n

  \u5176\u4e2d\uff0cC\u662f\u4fe1\u9053\u5bb9\u91cf\uff0cB\u662f\u4fe1\u9053\u5e26\u5bbd\uff0cS\/N\u662f\u4fe1\u566a\u6bd4\u3002<\/p>\n

\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u7684\u5e94\u7528<\/h2>\n

  \u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u53ef\u4ee5\u7528\u4e8e\u8ba1\u7b97\u4fe1\u9053\u5bb9\u91cf\uff0c\u4ee5\u4f30\u8ba1\u4fe1\u53f7\u5728\u4fe1\u9053\u4e0a\u4ee5\u6700\u5927\u901f\u7387\u4f20\u8f93\u6240\u9700\u8981\u7684\u6700\u5c0f\u4fe1\u606f\u71b5\u3002<\/p>\n

  1.\u8ba1\u7b97\u4fe1\u9053\u5bb9\u91cf<\/h3>\n

  \u53ef\u4ee5\u4f7f\u7528\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u6765\u8ba1\u7b97\u4fe1\u9053\u5bb9\u91cf\uff0c\u4ee5\u786e\u5b9a\u4fe1\u53f7\u5728\u4fe1\u9053\u4e0a\u4ee5\u6700\u5927\u901f\u7387\u4f20\u8f93\u6240\u9700\u8981\u7684\u6700\u5c0f\u4fe1\u606f\u71b5\u3002\u4f8b\u5982\uff0c\u5728\u4fe1\u9053\u5e26\u5bbd\u4e3a2MHz\uff0c\u4fe1\u566a\u6bd4\u4e3a20dB\u7684\u4fe1\u9053\u4e2d\uff0c\u4fe1\u9053\u5bb9\u91cf\u53ef\u4ee5\u8ba1\u7b97\u4e3a\uff1a<\/p>\n

  C = 2MHz log2<\/sub>(1 + 20\/1) = 16Mbits\/s<\/strong><\/p>\n

  \u7531\u6b64\u53ef\u89c1\uff0c\u5728\u8fd9\u79cd\u4fe1\u9053\u4e2d\uff0c\u4fe1\u53f7\u53ef\u4ee5\u5728\u6700\u5927\u901f\u7387\u4e3a16Mbits\/s\u7684\u60c5\u51b5\u4e0b\u4f20\u8f93\u3002<\/p>\n

  2.\u4f30\u8ba1\u4fe1\u9053\u5bb9\u91cf<\/h3>\n

  \u53ef\u4ee5\u4f7f\u7528\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u4f30\u8ba1\u4fe1\u9053\u5bb9\u91cf\uff0c\u4ee5\u786e\u5b9a\u4fe1\u53f7\u5728\u4fe1\u9053\u4e0a\u4ee5\u6700\u5927\u901f\u7387\u4f20\u8f93\u6240\u9700\u8981\u7684\u6700\u5c0f\u4fe1\u606f\u71b5\u3002\u4f8b\u5982\uff0c\u5728\u4fe1\u9053\u5e26\u5bbd\u4e3a4MHz\uff0c\u4fe1\u566a\u6bd4\u4e3a25dB\u7684\u4fe1\u9053\u4e2d\uff0c\u4fe1\u9053\u5bb9\u91cf\u53ef\u4ee5\u4f30\u8ba1\u4e3a\uff1a<\/p>\n

  C = 4MHz log2<\/sub>(1 + 25\/1) = 32Mbits\/s<\/strong><\/p>\n

  \u7531\u6b64\u53ef\u89c1\uff0c\u5728\u8fd9\u79cd\u4fe1\u9053\u4e2d\uff0c\u4fe1\u53f7\u53ef\u4ee5\u5728\u6700\u5927\u901f\u7387\u4e3a32Mbits\/s\u7684\u60c5\u51b5\u4e0b\u4f20\u8f93\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u662f\u4e00\u79cd\u91cd\u8981\u7684\u8ba1\u7b97\u4fe1\u9053\u5bb9\u91cf\u7684\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u8ba1\u7b97\u548c\u4f30\u8ba1\u4fe1\u9053\u5bb9\u91cf\uff0c\u4ee5\u786e\u5b9a\u4fe1\u53f7\u5728\u4fe1\u9053\u4e0a\u4ee5\u6700\u5927\u901f\u7387\u4f20\u8f93\u6240\u9700\u8981\u7684\u6700\u5c0f\u4fe1\u606f\u71b5\u3002<\/strong>\u672c\u6587\u4ecb\u7ecd\u4e86\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u7684\u6982\u5ff5\u548c\u5e94\u7528\uff0c\u5e0c\u671b\u80fd\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4fe1\u9053\u5bb9\u91cf\u662f\u6307\u5728\u4fe1\u9053\u4e0a\u4f20\u8f93\u4fe1\u53f7\u7684\u6700\u5927\u901f\u7387\uff0c\u4e5f\u5c31\u662f\u4fe1\u53f7\u53ef\u4ee5\u5728\u4fe1\u9053\u4e0a\u4ee5\u6700\u5927\u901f\u7387\u4f20\u8f93\u6240\u9700\u8981\u7684\u6700\u5c0f\u4fe1\u606f\u71b5\u3002\u6ce2\u5f62\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u662f\u8ba1\u7b97\u4fe1\u9053\u5bb9\u91cf\u7684\u91cd\u8981\u65b9\u6cd5\uff0c\u5b83\u662f\u7531\u7f8e\u56fd\u6570\u5b66\u5bb6ClaudeS<\/p>\n","protected":false},"author":1,"featured_media":4132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[183],"class_list":["post-47375","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-xd"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/47375"}],"collection":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/comments?post=47375"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/47375\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=47375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=47375"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=47375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}