{"id":65113,"date":"2023-11-14T16:44:53","date_gmt":"2023-11-14T08:44:53","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=65113"},"modified":"2023-11-14T16:44:57","modified_gmt":"2023-11-14T08:44:57","slug":"otzjtyl","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/65113.html","title":{"rendered":"OFDM\u8c03\u5236\u89e3\u8c03\u539f\u7406"},"content":{"rendered":"\n

\u3000\u3000OFDM(Orthogonal Frequency Division Multiplexing\uff0c\u6b63\u4ea4\u9891\u5206\u590d\u7528)\u662f\u4e00\u79cd\u5e7f\u6cdb\u5e94\u7528\u4e8e\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u8c03\u5236\u89e3\u8c03\u6280\u672f\uff0c\u5b83\u4ee5\u5176\u9ad8\u6548\u7684\u9891\u8c31\u5229\u7528\u548c\u6297\u591a\u5f84\u5e72\u6270\u7684\u80fd\u529b\u800c\u5907\u53d7\u9752\u7750\u3002\u672c\u6587\u5c06\u5168\u9762\u89e3\u6790OFDM\u8c03\u5236\u89e3\u8c03\u539f\u7406\uff0c\u4ece\u57fa\u7840\u6982\u5ff5\u5230\u5177\u4f53\u5e94\u7528\u8fdb\u884c\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001OFDM\u8c03\u5236\u89e3\u8c03\u6982\u8ff0<\/h2>\n\n\n\n

\u3000\u3000OFDM\u662f\u4e00\u79cd\u591a\u5b50\u8f7d\u6ce2\u8c03\u5236\u6280\u672f\uff0c\u901a\u8fc7\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u6210\u591a\u4e2a\u4f4e\u901f\u5b50\u8f7d\u6ce2\u8fdb\u884c\u4f20\u8f93\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u9891\u8c31\u7684\u9ad8\u6548\u5229\u7528\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\u5c06\u9891\u57df\u4e0a\u7684\u6570\u636e\u8f6c\u6362\u4e3a\u65f6\u57df\u4e0a\u7684\u4fe1\u53f7\u8fdb\u884c\u4f20\u8f93\uff0c\u63a5\u6536\u7aef\u518d\u5c06\u65f6\u57df\u4fe1\u53f7\u8f6c\u6362\u56de\u9891\u57df\u8fdb\u884c\u89e3\u8c03\u3002<\/strong>OFDM\u8c03\u5236\u89e3\u8c03\u4e3b\u8981\u5305\u62ec\u5b50\u8f7d\u6ce2\u751f\u6210\u3001\u6570\u636e\u8c03\u5236\u3001IFFT\u53d8\u6362\u3001\u52a0\u7a97\u3001\u5e76\u884c\u4f20\u8f93\u3001\u63a5\u6536\u7aefFFT\u53d8\u6362\u3001\u6570\u636e\u89e3\u8c03\u7b49\u5173\u952e\u6b65\u9aa4\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001OFDM\u8c03\u5236\u539f\u7406<\/h2>\n\n\n\n

\u3000\u30001. \u5b50\u8f7d\u6ce2\u751f\u6210<\/h3>\n\n\n\n

\u3000\u3000OFDM\u8c03\u5236\u4e2d\uff0c\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u6210\u591a\u4e2a\u4f4e\u901f\u5b50\u8f7d\u6ce2\u8fdb\u884c\u4f20\u8f93\u3002\u5b50\u8f7d\u6ce2\u7684\u6570\u91cf\u548c\u95f4\u9694\u662fOFDM\u8c03\u5236\u7684\u5173\u952e\u53c2\u6570\uff0c\u901a\u5e38\u91c7\u7528\u6b63\u4ea4\u7684\u5b50\u8f7d\u6ce2\uff0c\u4ee5\u4fdd\u8bc1\u5b50\u8f7d\u6ce2\u4e4b\u95f4\u7684\u4e92\u4e0d\u5e72\u6270\u3002<\/p>\n\n\n\n

\u3000\u30002. \u6570\u636e\u8c03\u5236<\/h3>\n\n\n\n

\u3000\u3000\u5c06\u6570\u5b57\u4fe1\u53f7\u8f6c\u6362\u4e3a\u6a21\u62df\u4fe1\u53f7\u662fOFDM\u8c03\u5236\u7684\u5173\u952e\u6b65\u9aa4\u4e4b\u4e00\u3002\u5e38\u89c1\u7684\u8c03\u5236\u65b9\u5f0f\u5305\u62ec\u76f8\u4f4d\u8c03\u5236\u3001\u632f\u5e45\u8c03\u5236\u548c\u9891\u7387\u8c03\u5236\u7b49\u3002<\/p>\n\n\n\n

\u3000\u30003. IFFT\u53d8\u6362<\/h3>\n\n\n\n

\u3000\u3000\u5c06\u9891\u57df\u4e0a\u7684\u6570\u636e\u8f6c\u6362\u4e3a\u65f6\u57df\u4e0a\u7684\u4fe1\u53f7\u662fOFDM\u8c03\u5236\u7684\u6838\u5fc3\u8fc7\u7a0b\u3002\u901a\u8fc7\u5e94\u7528\u9006\u5085\u91cc\u53f6\u53d8\u6362(IFFT)\uff0c\u5c06\u9891\u57df\u4e0a\u7684\u5b50\u8f7d\u6ce2\u8f6c\u6362\u4e3a\u65f6\u57df\u4e0a\u7684OFDM\u7b26\u53f7\u3002<\/p>\n\n\n\n

\u3000\u30004. \u52a0\u7a97<\/h3>\n\n\n\n

\u3000\u3000\u7531\u4e8eIFFT\u53d8\u6362\u5f97\u5230\u7684OFDM\u7b26\u53f7\u662f\u5468\u671f\u6027\u7684\uff0c\u4e3a\u4e86\u907f\u514d\u7b26\u53f7\u95f4\u7684\u5e72\u6270\uff0c\u9700\u8981\u5bf9OFDM\u7b26\u53f7\u8fdb\u884c\u52a0\u7a97\u5904\u7406\uff0c\u5e38\u89c1\u7684\u7a97\u51fd\u6570\u5305\u62ec\u77e9\u5f62\u7a97\u3001\u6c49\u5b81\u7a97\u548c\u5347\u4f59\u5f26\u7a97\u7b49\u3002<\/p>\n\n\n\n

\u3000\u30005. \u5e76\u884c\u4f20\u8f93<\/h3>\n\n\n\n

\u3000\u3000OFDM\u8c03\u5236\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u6210\u591a\u4e2a\u4f4e\u901f\u5b50\u8f7d\u6ce2\u8fdb\u884c\u4f20\u8f93\uff0c\u8fd9\u4e9b\u5b50\u8f7d\u6ce2\u53ef\u4ee5\u540c\u65f6\u4f20\u8f93\uff0c\u4ece\u800c\u5b9e\u73b0\u9ad8\u6548\u7684\u5e76\u884c\u4f20\u8f93\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001OFDM\u89e3\u8c03\u539f\u7406<\/h2>\n\n\n\n

\u3000\u30001. \u63a5\u6536\u7aefFFT\u53d8\u6362<\/h3>\n\n\n\n

\u3000\u3000\u63a5\u6536\u7aef\u901a\u8fc7\u5e94\u7528\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362(FFT)\uff0c\u5c06\u63a5\u6536\u5230\u7684OFDM\u7b26\u53f7\u4ece\u65f6\u57df\u8f6c\u6362\u4e3a\u9891\u57df\uff0c\u5f97\u5230\u5404\u4e2a\u5b50\u8f7d\u6ce2\u7684\u9891\u57df\u4fe1\u53f7\u3002<\/p>\n\n\n\n

\u3000\u30002. \u6570\u636e\u89e3\u8c03<\/h3>\n\n\n\n

\u3000\u3000\u5bf9\u63a5\u6536\u5230\u7684\u9891\u57df\u4fe1\u53f7\u8fdb\u884c\u89e3\u8c03\uff0c\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u5b57\u4fe1\u53f7\u3002\u89e3\u8c03\u8fc7\u7a0b\u5305\u62ec\u6570\u636e\u68c0\u6d4b\u3001\u4fe1\u53f7\u6062\u590d\u548c\u8bef\u7801\u7ea0\u6b63\u7b49\u6b65\u9aa4\u3002<\/p>\n\n\n\n

\u3000\u3000\u56db\u3001OFDM\u8c03\u5236\u89e3\u8c03\u5e94\u7528<\/h2>\n\n\n\n

\u3000\u3000OFDM\u8c03\u5236\u89e3\u8c03\u6280\u672f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u5305\u62ecWi-Fi\u3001LTE\u30015G\u7b49\u3002\u5176\u9ad8\u6548\u7684\u9891\u8c31\u5229\u7528\u548c\u6297\u591a\u5f84\u5e72\u6270\u7684\u80fd\u529b\u4f7f\u5176\u6210\u4e3a\u65e0\u7ebf\u901a\u4fe1\u9886\u57df\u7684\u91cd\u8981\u6280\u672f\u3002<\/p>\n\n\n\n

\u3000\u3000\u7ed3\u8bba\uff1a<\/h2>\n\n\n\n

\u3000\u3000OFDM\u8c03\u5236\u89e3\u8c03\u539f\u7406\u662f\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u5173\u952e\u6280\u672f\u4e4b\u4e00\uff0c\u901a\u8fc7\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u6210\u591a\u4e2a\u4f4e\u901f\u5b50\u8f7d\u6ce2\u8fdb\u884c\u4f20\u8f93\uff0c\u5b9e\u73b0\u4e86\u5bf9\u9891\u8c31\u7684\u9ad8\u6548\u5229\u7528\u3002\u672c\u6587\u4eceOFDM\u8c03\u5236\u89e3\u8c03\u6982\u8ff0\u3001\u8c03\u5236\u539f\u7406\u3001\u89e3\u8c03\u539f\u7406\u548c\u5e94\u7528\u7b49\u65b9\u9762\u8fdb\u884c\u4e86\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u8bfb\u8005\u901a\u8fc7\u672c\u6587\u80fd\u591f\u5bf9OFDM\u8c03\u5236\u89e3\u8c03\u539f\u7406\u6709\u66f4\u6df1\u5165\u7684\u7406\u89e3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

OFDM(Orthogonal Frequency Division Multiplexing\uff0c\u6b63\u4ea4\u9891\u5206\u590d\u7528)\u662f\u4e00\u79cd\u5e7f\u6cdb\u5e94\u7528\u4e8e\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u8c03\u5236\u89e3\u8c03\u6280\u672f\uff0c\u5b83\u4ee5\u5176\u9ad8\u6548\u7684\u9891\u8c31\u5229\u7528\u548c\u6297\u591a\u5f84\u5e72\u6270\u7684\u80fd\u529b\u800c\u5907\u53d7\u9752\u7750<\/p>\n","protected":false},"author":1,"featured_media":48457,"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":[346],"class_list":["post-65113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ofdm"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/65113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=65113"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/65113\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/48457"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=65113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=65113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=65113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}