{"id":96915,"date":"2024-08-19T10:55:35","date_gmt":"2024-08-19T02:55:35","guid":{"rendered":"\/\/www.viralrail.com\/?p=96915"},"modified":"2024-08-19T10:57:18","modified_gmt":"2024-08-19T02:57:18","slug":"ojsdylhyqd","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/96915.html","title":{"rendered":"OFDM\u6280\u672f\u7684\u539f\u7406\u548c\u4f18\u7f3a\u70b9"},"content":{"rendered":"\n

\u3000\u3000OFDM(\u6b63\u4ea4\u9891\u5206\u590d\u7528)\u6280\u672f<\/strong>\u662f\u4e00\u79cd\u591a\u8f7d\u6ce2\u4f20\u8f93\u6280\u672f\uff0c\u5176\u57fa\u672c\u539f\u7406\u662f\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u5272\u6210\u591a\u4e2a\u8f83\u4f4e\u901f\u7387\u7684\u6570\u636e\u6d41\uff0c\u5e76\u5206\u914d\u5230\u4e00\u7cfb\u5217\u6b63\u4ea4\u7684\u5b50\u8f7d\u6ce2\u4e0a\u8fdb\u884c\u4f20\u8f93\u3002\u8fd9\u4e9b\u5b50\u8f7d\u6ce2\u4e4b\u95f4\u7684\u6b63\u4ea4\u6027\u4f7f\u5f97\u5b83\u4eec\u5728\u9891\u8c31\u4e0a\u53ef\u4ee5\u540c\u65f6\u4f20\u8f93\u800c\u4e0d\u4e92\u76f8\u5e72\u6270\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001 OFDM\u6280\u672f\u4f18\u7f3a\u70b9<\/h2>\n\n\n\n
\"ofdm\"<\/figure>\n\n\n\n

\u3000\u30001. OFDM\u6280\u672f\u7684\u4f18\u70b9<\/h3>\n\n\n\n
    \n
  • \u3000\u3000\u9ad8\u901f\u4f20\u8f93<\/strong>\uff1aOFDM\u80fd\u591f\u652f\u6301\u9ad8\u6570\u636e\u7387\u7684\u4f20\u8f93\uff0c\u9002\u7528\u4e8e\u73b0\u4ee3\u5bbd\u5e26\u6570\u5b57\u901a\u4fe1\u7cfb\u7edf\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u6297\u591a\u5f84\u8870\u843d\u80fd\u529b\u5f3a<\/strong>\uff1a\u7531\u4e8e\u6bcf\u4e2a\u5b50\u8f7d\u6ce2\u4e4b\u95f4\u6b63\u4ea4\uff0cOFDM\u80fd\u6709\u6548\u6291\u5236\u591a\u5f84\u4f20\u64ad\u5f15\u8d77\u7684\u9891\u7387\u9009\u62e9\u6027\u8870\u843d\uff0c\u63d0\u9ad8\u4fe1\u53f7\u8d28\u91cf\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u6297\u5e72\u6270\u80fd\u529b\u5f3a<\/strong>\uff1aOFDM\u901a\u8fc7\u5c06\u6570\u636e\u5206\u6563\u5230\u591a\u4e2a\u5b50\u8f7d\u6ce2\u4e0a\uff0c\u964d\u4f4e\u4e86\u5355\u4e2a\u5b50\u8f7d\u6ce2\u53d7\u5230\u5e72\u6270\u7684\u53ef\u80fd\u6027\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u6574\u4f53\u6297\u5e72\u6270\u80fd\u529b\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u9ad8\u9891\u8c31\u5229\u7528\u7387<\/strong>\uff1aOFDM\u5229\u7528\u5b50\u8f7d\u6ce2\u4e4b\u95f4\u7684\u6b63\u4ea4\u6027\uff0c\u4f7f\u5f97\u9891\u8c31\u8d44\u6e90\u5f97\u5230\u66f4\u9ad8\u6548\u7684\u5229\u7528\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u7075\u6d3b\u6027\u5f3a<\/strong>\uff1aOFDM\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8c03\u6574\u5b50\u8f7d\u6ce2\u7684\u6570\u91cf\u548c\u5e26\u5bbd\uff0c\u4ee5\u9002\u5e94\u4e0d\u540c\u7684\u901a\u4fe1\u9700\u6c42\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u96f6\u8f7d\u6ce2\u95f4\u5e72\u6270<\/strong>\uff1a\u7531\u4e8e\u5b50\u8f7d\u6ce2\u6b63\u4ea4\uff0c\u4e0d\u540c\u5b50\u8f7d\u6ce2\u4e4b\u95f4\u7684\u4fe1\u53f7\u4e0d\u4f1a\u76f8\u4e92\u5e72\u6270\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u9891\u8c31\u6548\u7387\u3002<\/li>\n<\/ul>\n\n\n\n

    \u3000\u30002. OFDM\u6280\u672f\u7684\u7f3a\u70b9<\/h3>\n\n\n\n
      \n
    • \u3000\u3000\u5bf9\u9891\u7387\u504f\u79fb\u654f\u611f<\/strong>\uff1a\u7531\u4e8eOFDM\u4f7f\u7528\u5927\u91cf\u5b50\u8f7d\u6ce2\uff0c\u5bf9\u9891\u7387\u51c6\u786e\u6027\u7684\u8981\u6c42\u975e\u5e38\u9ad8\uff0c\u9891\u7387\u504f\u5dee\u4f1a\u5f15\u8d77\u5b50\u8f7d\u6ce2\u95f4\u5e72\u6270\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u9ad8\u5cf0\u5747\u6bd4\uff08PAPR\uff09\u95ee\u9898<\/strong>\uff1aOFDM\u4fe1\u53f7\u7684\u5cf0\u503c\u529f\u7387\u8fdc\u9ad8\u4e8e\u5e73\u5747\u529f\u7387\uff0c\u5bfc\u81f4\u529f\u8017\u589e\u52a0\u548c\u786c\u4ef6\u8bbe\u8ba1\u590d\u6742\u5ea6\u63d0\u9ad8\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u590d\u6742\u5ea6\u9ad8<\/strong>\uff1aOFDM\u7cfb\u7edf\u7684\u8bbe\u8ba1\u548c\u5b9e\u73b0\u76f8\u5bf9\u590d\u6742\uff0c\u5c24\u5176\u662f\u5728\u9ad8\u901f\u7387\u6570\u636e\u4f20\u8f93\u548c\u9ad8\u7cbe\u5ea6\u9891\u8c31\u5229\u7528\u7387\u8981\u6c42\u4e0b\uff0c\u9700\u8981\u66f4\u590d\u6742\u7684\u8c03\u5236\u548c\u89e3\u8c03\u6280\u672f\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u65f6\u57df\u6296\u52a8<\/strong>\uff1a\u7531\u4e8eFFT\u53d8\u6362\u7684\u5b58\u5728\uff0cOFDM\u5728\u5904\u7406\u65f6\u57df\u4e0a\u7684\u4fe1\u53f7\u65f6\u4f1a\u5e26\u6765\u4e00\u5b9a\u7684\u590d\u6742\u5ea6\u548c\u5ef6\u8fdf\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u9891\u8c31\u6548\u7387\u76f8\u5bf9\u8f83\u4f4e<\/strong>\uff1a\u5c3d\u7ba1OFDM\u63d0\u9ad8\u4e86\u9891\u8c31\u5229\u7528\u7387\uff0c\u4f46\u4e0e\u67d0\u4e9b\u5176\u4ed6\u6280\u672f\u76f8\u6bd4\uff0c\u5176\u9891\u8c31\u6548\u7387\u4ecd\u7136\u4e0d\u662f\u6700\u4f18\u7684\u3002<\/li>\n<\/ul>\n\n\n\n

      \u3000\u3000OFDM\u6280\u672f\u5177\u6709\u9ad8\u901f\u4f20\u8f93\u3001\u6297\u591a\u5f84\u8870\u843d\u3001\u6297\u5e72\u6270\u80fd\u529b\u5f3a\u7b49\u4f18\u70b9\uff0c\u4f46\u4e5f\u5b58\u5728\u5bf9\u9891\u7387\u504f\u79fb\u654f\u611f\u3001\u9ad8\u5cf0\u5747\u6bd4\u95ee\u9898\u3001\u590d\u6742\u5ea6\u9ad8\u7b49\u7f3a\u70b9\u3002<\/strong>\u8fd9\u4e9b\u7279\u6027\u4f7f\u5f97OFDM\u6210\u4e3a\u5bbd\u5e26\u6570\u5b57\u901a\u4fe1\u4e2d\u7684\u5e38\u7528\u8c03\u5236\u65b9\u6848\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u9700\u8981\u5145\u5206\u8003\u8651\u5176\u4f18\u7f3a\u70b9\u3002<\/p>\n\n\n\n

      \u3000\u3000\u4e8c\u3001 OFDM\u6280\u672f\u5728\u5904\u7406\u9891\u7387\u504f\u79fb\u65f6\u7684\u89e3\u51b3\u65b9\u6cd5<\/h2>\n\n\n\n

      \u3000\u3000OFDM\u6280\u672f\u5728\u5904\u7406\u9891\u7387\u504f\u79fb(CFO)\u65f6\uff0c\u4e3b\u8981\u91c7\u7528\u4ee5\u4e0b\u51e0\u79cd\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n

        \n
      • \u3000\u3000\u5bfc\u9891\u8f85\u52a9\u4f30\u8ba1\u548c\u6821\u6b63<\/strong>\uff1a\u901a\u8fc7\u5f15\u5165\u5bfc\u9891\u4fe1\u53f7\u6765\u4f30\u8ba1\u548c\u6821\u6b63\u8f7d\u6ce2\u9891\u7387\u504f\u79fb\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u8f7d\u9891\u6355\u83b7\u9636\u6bb5\u4f7f\u7528\u65f6\u57df\u5185\u63d2\u5165\u7b49\u503c\u5bfc\u9891\u7684\u65b9\u6cd5\u8fdb\u884c\u9891\u504f\u4f30\u8ba1\uff0c\u5728\u8f7d\u9891\u8ddf\u8e2a\u9636\u6bb5\u5219\u5229\u7528\u5faa\u73af\u524d\u7f00(CP)\u6765\u4f30\u8ba1\u9891\u7387\u504f\u79fb\u5e76\u8fdb\u884c\u6821\u6b63\u3002\u6b64\u5916\uff0c\u8fd8\u6709\u57fa\u4e8e\u5bfc\u9891\u7684\u7c97\u9891\u504f\u4f30\u8ba1\u65b9\u6cd5\u548c\u76f2\u81ea\u9002\u5e94\u7ec6\u9891\u504f\u4f30\u8ba1\u7b97\u6cd5\u3002<\/li>\n\n\n\n
      • \u3000\u3000Minn\u7b97\u6cd5<\/strong>\uff1a\u8fd9\u662fOFDM\u540c\u6b65\u4e2d\u7684\u4e00\u4e2a\u7ecf\u5178\u65b9\u6cd5\uff0c\u4e3b\u8981\u7528\u4e8e\u89e3\u51b3\u7b26\u53f7\u5b9a\u65f6\u540c\u6b65\u548c\u8f7d\u6ce2\u9891\u7387\u504f\u79fb\u7684\u95ee\u9898\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u4f4e\u590d\u6742\u5ea6\u4f30\u8ba1\u5668<\/strong>\uff1a\u63d0\u51fa\u4e86\u4e00\u79cd\u65b0\u9896\u7684\u4f4e\u590d\u6742\u5ea6\u987a\u5e8f\u3001\u76f2\u3001\u5bfc\u9891\u8f85\u52a9\u4f30\u8ba1\u5668\uff0c\u7528\u4e8e\u6b63\u4ea4\u9891\u5206\u590d\u7528\u901a\u4fe1\u7684\u91c7\u6837\u9891\u7387\u504f\u79fb\u548c\u8f7d\u6ce2\u9891\u7387\u504f\u79fb\u3002\u8be5\u7b97\u6cd5\u5904\u7406\u63a5\u6536\u5230\u7684\u5b50\u8f7d\u6ce2\u4ee5\u83b7\u5f97\u4e00\u6b21\u4ec5\u53d6\u51b3\u4e8e\u5355\u4e2a\u672a\u77e5\u53c2\u6570\u7684\u6210\u672c\u51fd\u6570\uff0c\u540c\u65f6\u5ffd\u7565\u566a\u58f0\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u91cd\u590d\u7684\u5faa\u73af\u524d\u7f00CP<\/strong>\uff1aOFDM\u7b26\u53f7\u53ef\u4ee5\u91c7\u7528\u91cd\u590d\u7684\u5faa\u73af\u524d\u7f00CP\u6765\u6c42\u9891\u504f\uff0c\u4e5f\u53ef\u4ee5\u5728\u534f\u8bae\u8bbe\u8ba1\u65f6\uff0c\u5728\u65f6\u57df\u4e0a\u53d1\u9001\u76f8\u540c\u7684OFDM\u7b26\u53f7\u8bad\u7ec3\u5e8f\u5217\uff0c\u7528\u6765\u4f30\u8ba1\u9891\u504f\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u81ea\u9002\u5e94\u7b49\u5316\u5668<\/strong>\uff1a\u91c7\u7528\u81ea\u9002\u5e94\u7b49\u5316\u5668\u6765\u62b5\u6d88\u9891\u504f\uff0c\u4ece\u800c\u51cf\u5c0fCFO\u5bf9OFDM\u7cfb\u7edf\u6027\u80fd\u7684\u5f71\u54cd\u3002<\/li>\n<\/ul>\n\n\n\n
        \"\"<\/figure>\n\n\n\n

        \u3000\u3000\u4e09\u3001 \u5982\u4f55\u964d\u4f4eOFDM\u4fe1\u53f7\u7684\u9ad8\u5cf0\u5747\u6bd4(PAPR)\u95ee\u9898\u540c\u65f6\u4fdd\u6301\u4fe1\u53f7\u8d28\u91cf?<\/h2>\n\n\n\n

        \u3000\u3000\u964d\u4f4eOFDM\u4fe1\u53f7\u7684\u9ad8\u5cf0\u5747\u6bd4(PAPR)\u95ee\u9898\uff0c\u540c\u65f6\u4fdd\u6301\u4fe1\u53f7\u8d28\u91cf\uff0c\u53ef\u4ee5\u91c7\u7528\u591a\u79cd\u6280\u672f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6709\u6548\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n

          \n
        • \u3000\u3000\u90e8\u5206\u4f20\u8f93\u5e8f\u5217\uff08PTS\uff09<\/strong> \uff1a\u8fd9\u79cd\u65b9\u6cd5\u901a\u8fc7\u5c06\u539f\u59cb\u6570\u636e\u5206\u6210\u4e0d\u540c\u7684\u5b50\u5757\u5e76\u4f7f\u7528\u4e0d\u540c\u7684\u52a0\u6743\u7cfb\u6570\u6765\u51cf\u5c11\u5cf0\u503c\u529f\u7387\u3002\u867d\u7136\u5b83\u5728\u63d0\u9ad8\u7ebf\u6027\u5ea6\u3001\u4fe1\u53f7\u8d28\u91cf\u3001\u80fd\u6548\u548c\u4fe1\u9053\u5bb9\u91cf\u65b9\u9762\u5177\u6709\u663e\u8457\u4f18\u52bf\uff0c\u4f46\u9700\u8981\u8f83\u9ad8\u7684\u8ba1\u7b97\u590d\u6742\u5ea6\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u9009\u62e9\u6620\u5c04\uff08SLM\uff09<\/strong> \uff1aSLM\u662f\u4e00\u79cd\u5e38\u7528\u7684\u6280\u672f\uff0c\u901a\u8fc7\u6dfb\u52a0\u76f8\u79fb\u4ee3\u7801\u5e8f\u5217\u6765\u6291\u5236\u5cf0\u5747\u6bd4\u3002\u5177\u4f53\u800c\u8a00\uff0cSLM\u901a\u8fc7\u5c06\u539f\u59cbOFDM\u4fe1\u53f7\u8fdb\u884c\u9650\u5e45\u5904\u7406\u6765\u964d\u4f4ePAPR\u3002\u6b64\u5916\uff0c\u8fd8\u6709\u4e00\u79cd\u6539\u8fdb\u7684\u9009\u62e9\u6620\u5c04(\u6539\u8fdb\u7684\u7578\u53d8SLM\u7b97\u6cd5)\u4e5f\u88ab\u63d0\u51fa\u7528\u4e8e\u5904\u7406\u7f16\u7801\u540e\u7684OFDM\u4fe1\u53f7\u7684PAPR\u95ee\u9898\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u6df7\u5408\u9884\u7f16\u7801-\u538b\u6269\u65b9\u6848\uff08HPCS\uff09<\/strong> \uff1a\u8be5\u65b9\u6848\u9996\u5148\u4f7f\u7528Zadoff-Chu\u5e8f\u5217\u5bf9OFDM\u4fe1\u53f7\u8fdb\u884c\u9884\u7f16\u7801\uff0c\u7136\u540e\u5bf9\u4e2d\u95f4\u4fe1\u53f7\u8fdb\u884c\u6b63\u5f26\u538b\u6269\uff0c\u4ee5\u6700\u5c0f\u5316OFDM\u4fe1\u53f7\u7684PAPR\u503c\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u79bb\u6563\u4f59\u5f26\u53d8\u6362\uff08DCT\uff09<\/strong> \uff1aDCT\u4e5f\u662f\u4e00\u79cd\u6709\u6548\u7684PAPR\u964d\u4f4e\u6280\u672f\uff0c\u901a\u8fc7\u53d8\u6362\u57df\u7684\u5904\u7406\u6765\u51cf\u5c11\u5cf0\u5747\u6bd4\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u5e7f\u4e49\u9006\u77e9\u9635\u65b9\u6cd5<\/strong>\uff1a\u8fd9\u79cd\u65b9\u6cd5\u5229\u7528\u5e7f\u4e49\u9006\u77e9\u9635\u6765\u4f18\u5316\u591a\u8f7d\u6ce2\u4f20\u8f93\u7cfb\u7edf\u4e2d\u7684PAPR\u95ee\u9898\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u6a21\u62df\u9000\u706b\u4f18\u5316\u7684\u90e8\u5206\u4f20\u8f93\u5e8f\u5217\uff08IMSA-PTS\uff09\u7b97\u6cd5<\/strong>\uff1a\u8be5\u7b97\u6cd5\u91c7\u7528\u6539\u8fdb\u6a21\u62df\u9000\u706b\u4f18\u5316\u7684\u90e8\u5206\u4f20\u8f93\u5e8f\u5217\uff0c\u4ee5\u5b9e\u73b0\u4f4e\u590d\u6742\u5ea6\u7684PAPR\u964d\u4f4e\u3002<\/li>\n<\/ul>\n\n\n\n

          \u3000\u3000\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u4f18\u7f3a\u70b9\uff0c\u9009\u62e9\u5177\u4f53\u7684\u6280\u672f\u65f6\u9700\u6839\u636e\u5b9e\u9645\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u548c\u8d44\u6e90\u9650\u5236\u8fdb\u884c\u6743\u8861\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8ba1\u7b97\u8d44\u6e90\u6709\u9650\uff0c\u5219\u53ef\u80fd\u66f4\u503e\u5411\u4e8e\u4f7f\u7528\u4f4e\u590d\u6742\u5ea6\u7684\u7b97\u6cd5;<\/p>\n\n\n\n

          \u3000\u3000\u56db\u3001 OFDM\u7cfb\u7edf\u8bbe\u8ba1\u548c\u5b9e\u73b0\u4e2d\uff0c\u54ea\u4e9b\u8c03\u5236\u548c\u89e3\u8c03\u6280\u672f\u6bd4\u8f83\u5148\u8fdb?<\/h2>\n\n\n\n

          \u3000\u3000\u5728OFDM\u7cfb\u7edf\u8bbe\u8ba1\u548c\u5b9e\u73b0\u4e2d\uff0c\u5148\u8fdb\u7684\u8c03\u5236\u548c\u89e3\u8c03\u6280\u672f\u5305\u62ec\u4ee5\u4e0b\u51e0\u79cd\uff1a<\/p>\n\n\n\n

            \n
          • \u3000\u3000\u76f2\u89e3\u8c03\u6280\u672f<\/strong>\uff1a\u8fd9\u79cd\u6280\u672f\u4e0d\u9700\u8981\u9884\u5148\u77e5\u9053\u4fe1\u9053\u4fe1\u606f\uff0c\u901a\u8fc7\u4fe1\u53f7\u9884\u5904\u7406\u3001\u65f6\u95f4\u53c2\u6570\u76f2\u4f30\u8ba1\u548c\u65f6\u9891\u540c\u6b65\u6280\u672f\u6765\u5b9e\u73b0\u5bf9OFDM\u4fe1\u53f7\u7684\u89e3\u8c03\u3002<\/li>\n\n\n\n
          • \u3000\u3000OFDM-IM\uff08OFDM-\u7d22\u5f15\u8c03\u5236\uff09<\/strong> \uff1a\u8fd9\u662f\u4e00\u79cd\u65b0\u578b\u7684\u8c03\u5236\u65b9\u6848\uff0c\u4e0d\u4ec5\u5229\u7528M-ary\u4fe1\u53f7\u661f\u5ea7\u8fdb\u884c\u4fe1\u606f\u4f20\u8f93\uff0c\u8fd8\u901a\u8fc7\u6d3b\u52a8\u5b50\u8f7d\u6ce2\u7684\u7d22\u5f15\u6765\u4f20\u9012\u4fe1\u606f\u3002\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u7528\u4e8e\u9891\u7387\u9009\u62e9\u6027\u901a\u9053\u3002<\/li>\n\n\n\n
          • \u3000\u3000\u65b0\u578b\u56db\u9636\u7d2f\u91cf\u7279\u5f81\u63d0\u53d6\u65b9\u6cd5<\/strong>\uff1a\u8be5\u65b9\u6cd5\u7528\u4e8eOFDM\u4fe1\u53f7\u7684\u8bc6\u522b\uff0c\u901a\u8fc7\u5bf9OFDM\u4fe1\u53f7\u7279\u6027\u8fdb\u884c\u5206\u6790\uff0c\u8bbe\u8ba1\u4e86\u9ad8\u6548\u7684\u7279\u5f81\u63d0\u53d6\u65b9\u6cd5\uff0c\u4ee5\u63d0\u9ad8\u4fe1\u53f7\u8bc6\u522b\u7684\u51c6\u786e\u6027\u3002<\/li>\n<\/ul>\n\n\n\n

            \u3000\u3000\u4e94\u3001 OFDM\u6280\u672f\u5982\u4f55\u6709\u6548\u51cf\u5c11\u65f6\u57df\u6296\u52a8\u7684\u5f71\u54cd?<\/h2>\n\n\n\n

            \u3000\u3000\u5728OFDM\u6280\u672f\u4e2d\uff0c\u6709\u6548\u51cf\u5c11\u65f6\u57df\u6296\u52a8\u7684\u5f71\u54cd\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\u3002<\/p>\n\n\n\n

              \n
            • \u3000\u3000\u5e27\u5185\u4fe1\u53f7\u65f6\u57df\u8c03\u6574<\/strong>\uff1a\u57fa\u4e8e\u76f4\u6d41\u504f\u7f6e\u5149OFDM\u7684\u5e27\u5185\u4fe1\u53f7\u65f6\u57df\u8c03\u6574\u65b9\u6848\u5229\u7528\u5085\u91cc\u53f6\u53d8\u6362\u7684\u57fa\u672c\u6027\u8d28\uff0c\u901a\u8fc7\u7b80\u5355\u7684\u9891\u57df\u5b50\u4fe1\u9053\u9884\u5904\u7406\uff0c\u53ef\u4ee5\u5c06\u76f4\u6d41\u504f\u7f6e\u5149OFDM\u65f6\u57df\u4fe1\u53f7\u8fdb\u884c\u5e27\u5185\u4ea4\u53c9\u6027\u65f6\u5e8f\u642c\u79fb\uff0c\u4f7f\u4fe1\u53f7\u80fd\u91cf\u4ece\u7801\u5143\u4e2d\u5206\u79bb\u51fa\u6765\u3002<\/li>\n\n\n\n
            • \u3000\u3000\u9c81\u68d2\u7684\u65f6\u5e8f\u540c\u6b65\u8bbe\u8ba1<\/strong>\uff1a\u9488\u5bf9\u4f4e\u79fb\u52a8\u6027\u60c5\u51b5\uff0c\u8bbe\u8ba1\u4e00\u79cd\u9c81\u68d2\u7684\u65f6\u5e8f\u540c\u6b65\u7b97\u6cd5\uff0c\u5229\u7528\u5bfc\u9891\u8f85\u52a9\u4fe1\u9053\u4f30\u8ba1\u6765\u51cf\u5c11\u65f6\u5e8f\u8bef\u5dee\u5bf9OFDM\u7cfb\u7edf\u6027\u80fd\u7684\u5f71\u54cd\u3002<\/li>\n\n\n\n
            • \u3000\u3000\u9891\u504f\u53d6\u503c\u5224\u51b3\u673a\u5236<\/strong>\uff1a\u63d0\u51fa\u4e86\u4e00\u79cd\u9002\u7528\u4e8eOFDM\u65f6\u57df\u9891\u504f\u4f30\u8ba1\u7684\u9891\u504f\u53d6\u503c\u5224\u51b3\u673a\u5236\uff0c\u6839\u636e\u4e24\u4e2a\u81ea\u76f8\u5173\u5cf0\u503c\u4f30\u7b97\u51fa\u5927\u8303\u56f4\u548c\u5c0f\u8303\u56f4\u7684\u9891\u504f\u7c97\u503c\uff0c\u5e76\u7531\u9891\u504f\u53d6\u503c\u63a7\u5236\u72b6\u6001\u5668\u8fdb\u884c\u8c03\u6574\u3002<\/li>\n\n\n\n
            • \u3000\u3000\u5faa\u73af\u524d\u7f00\uff08CP\uff09\u7684\u4f7f\u7528<\/strong>\uff1a\u5728OFDM\u7cfb\u7edf\u4e2d\uff0c\u901a\u8fc7\u5728\u6bcf\u4e2aOFDM\u7b26\u53f7\u524d\u6dfb\u52a0\u5faa\u73af\u524d\u7f00(CP)\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6291\u5236\u591a\u5f84\u6548\u5e94\u5f15\u8d77\u7684\u7b26\u53f7\u95f4\u5e72\u6270(ISI)\uff0c\u4ece\u800c\u51cf\u5c11\u65f6\u57df\u6296\u52a8\u7684\u5f71\u54cd\u3002<\/li>\n\n\n\n
            • \u3000\u3000\u57fa\u4e8e\u538b\u7f29\u611f\u77e5\u7684\u975e\u7ebf\u6027\u5931\u771f\u6062\u590d<\/strong>\uff1a\u867d\u7136\u4e3b\u8981\u5173\u6ce8\u7684\u662f\u524a\u6ce2\u6280\u672f\uff0c\u4f46\u8be5\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u7528\u4e8e\u964d\u4f4eOFDM\u4fe1\u53f7\u7684\u5cf0\u503c\u5e73\u5747\u529f\u7387\u6bd4(PAPR)\uff0c\u95f4\u63a5\u51cf\u5c11\u7531\u4e8e\u9ad8PAPR\u5f15\u8d77\u7684\u65f6\u57df\u6296\u52a8\u3002<\/li>\n\n\n\n
            • \u3000\u3000\u57fa\u4e8e\u77ed\u65f6\u5085\u91cc\u53f6\u53d8\u6362\u7684\u65f6\u95f4\u540c\u6b65\u65b9\u6cd5<\/strong>\uff1a\u901a\u8fc7\u77ed\u65f6\u5085\u91cc\u53f6\u53d8\u6362\u5f97\u5230OFDM\u4fe1\u53f7\u7684\u4e8c\u7ef4\u5e45\u5ea6\u8c31\uff0c\u5e76\u63d0\u53d6\u5176\u4e2d\u7684\u5468\u671f\u5e73\u7a33\u65f6\u9891\u7ed3\u6784\u4fe1\u606f\uff0c\u4f30\u8ba1\u51faOFDM\u7b26\u53f7\u7684\u65e0ISI\u65f6\u95f4\u533a\u95f4\uff0c\u5e76\u9009\u53d6\u8be5\u533a\u95f4\u7684\u6700\u4f73\u4f4d\u7f6e\u4f5c\u4e3aOFDM\u7b26\u53f7\u8d77\u59cb\u4f4d\u7f6e\u4f30\u8ba1\u3002<\/li>\n<\/ul>\n\n\n\n

              \u3000\u3000\u516d\u3001 \u76ee\u524d\u6709\u54ea\u4e9b\u65b0\u5174\u7684\u8c03\u5236\u6280\u672f\u80fd\u591f\u63d0\u4f9b\u66f4\u9ad8\u7684\u9891\u8c31\u6548\u7387?<\/h2>\n\n\n\n

              \u3000\u3000\u4e0eOFDM\u76f8\u6bd4\uff0c\u76ee\u524d\u6709\u51e0\u79cd\u65b0\u5174\u7684\u8c03\u5236\u6280\u672f\u80fd\u591f\u63d0\u4f9b\u66f4\u9ad8\u7684\u9891\u8c31\u6548\u7387\uff1a<\/p>\n\n\n\n

                \n
              • \u3000\u3000\u9ad8\u7ef4\u5dee\u5206\u5149\u7a7a\u95f4\u8c03\u5236\uff08OSM\uff09<\/strong> \uff1a\u8fd9\u662f\u4e00\u79cd\u65b0\u578b\u7684\u5149\u591a\u8f93\u5165\u591a\u8f93\u51fa(OMIMO)\u6280\u672f\uff0c\u4e0d\u4ec5\u5229\u7528\u7b26\u53f7\u57df\u4f20\u9012\u4fe1\u606f\uff0c\u8fd8\u5229\u7528\u7a7a\u95f4\u57df\u6fc0\u5149\u5668\u7d22\u5f15\u989d\u5916\u643a\u5e26\u4fe1\u606f\uff0c\u5c06\u4f20\u7edf\u4e8c\u7ef4\u6570\u5b57\u8c03\u5236\u62d3\u5c55\u5230\u7531\u6570\u5b57\u57df\u548c\u7a7a\u95f4\u57df\u7ec4\u6210\u3002OSM\u7684\u9ad8\u7ef4\u8c03\u5236\u5927\u5927\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u4f20\u8f93\u901f\u7387\u548c\u9891\u8c31\u6548\u7387\u3002<\/li>\n\n\n\n
              • \u3000\u3000\u591a\u7535\u5e73\u6b63\u4ea4\u8c03\u5e45\uff08mQAM\uff09<\/strong> \uff1a\u8fd9\u662fQAM\u7684\u6269\u5c55\u7248\u672c\uff0c\u4f7f\u7528\u591a\u4e2a\u632f\u5e45\u7ea7\u522b\u548c\u76f8\u4f4d\u72b6\u6001\uff0c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u4e86\u9891\u8c31\u6548\u7387\u3002<\/li>\n\n\n\n
              • \u3000\u3000\u751a\u5c0f\u504f\u79fb\u952e\u63a7\uff08VMSK\uff09\u548c\u751a\u5c0f\u6ce2\u5f62\u5dee\u952e\u63a7\uff08VWDK\uff09<\/strong> \uff1a\u8fd9\u4e9b\u8c03\u5236\u65b9\u5f0f\u57fa\u4e8e\u8d85\u7a84\u5e26(UNB)\u6280\u672f\uff0c\u901a\u8fc7\u5927\u5e45\u5ea6\u6539\u8fdb\u9891\u8c31\u4f7f\u7528\u6548\u7387\u63d0\u4f9b\u4e86\u65b0\u7684\u9014\u5f84\u3002<\/li>\n\n\n\n
              • \u3000\u3000\u7d22\u5f15\u8c03\u5236\u6280\u672f\uff08IM\uff09<\/strong> \uff1a\u8fd9\u79cd\u6280\u672f\u6700\u8fd1\u88ab\u63d0\u51fa\uff0c\u5e76\u5f15\u8d77\u4e86\u6781\u5927\u7684\u5174\u8da3\uff0c\u56e0\u4e3a\u5b83\u80fd\u591f\u8fbe\u5230\u66f4\u9ad8\u7684\u9891\u8c31\u6548\u7387\u548c\u80fd\u91cf\u6548\u7387\u3002<\/li>\n\n\n\n
              • \u3000\u3000\u81ea\u9002\u5e94\u7f16\u7801\u8c03\u5236\uff08ACM\uff09<\/strong> \uff1a\u8fd9\u79cd\u6280\u672f\u53ef\u4ee5\u6839\u636e\u901a\u4fe1\u94fe\u8def\u73af\u5883\u5b9e\u9645\u60c5\u51b5\u81ea\u52a8\u8c03\u8282\u7f16\u7801\u3001\u8c03\u5236\u65b9\u5f0f\u4ee5\u63d0\u9ad8\u4fe1\u9053\u4f7f\u7528\u6548\u7387\uff0c\u4ece\u800c\u63d0\u5347\u7cfb\u7edf\u7684\u6570\u636e\u4f20\u8f93\u91cf\u3002<\/li>\n\n\n\n
              • \u3000\u3000\u5206\u5c42aco-ofdm\u8c03\u5236\u65b9\u6848<\/strong>\uff1a\u9488\u5bf9\u53ef\u89c1\u5149\u901a\u4fe1\u9ad8\u9891\u8c31\u6548\u7387\u7684\u8981\u6c42\uff0c\u63d0\u51fa\u4e86\u4e00\u79cd\u9ad8\u9891\u8c31\u6548\u7387\u7684\u5206\u5c42aco-ofdm\u8c03\u5236\u65b9\u6848\u3002<\/li>\n\n\n\n
              • \u3000\u3000OQAM-OFDM\u8c03\u5236<\/strong>\uff1a\u4f5c\u4e3aOFDM\u6280\u672f\u7684\u4e00\u79cd\u66ff\u4ee3\u65b9\u6848\uff0c\u91c7\u7528\u4e86\u5177\u6709\u826f\u597d\u9891\u57df\u805a\u7126\u7279\u6027\u7684\u539f\u578b\u6ee4\u6ce2\u5668\uff0c\u4e3a\u5176\u57285G\u4e2d\u7684\u5e94\u7528\u63d0\u4f9b\u4e86\u5e7f\u9614\u7684\u524d\u666f\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                OFDM(\u6b63\u4ea4\u9891\u5206\u590d\u7528)\u6280\u672f\u662f\u4e00\u79cd\u591a\u8f7d\u6ce2\u4f20\u8f93\u6280\u672f\uff0c\u5176\u57fa\u672c\u539f\u7406\u662f\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u5272\u6210\u591a\u4e2a\u8f83\u4f4e\u901f\u7387\u7684\u6570\u636e\u6d41\uff0c\u5e76\u5206\u914d\u5230\u4e00\u7cfb\u5217\u6b63\u4ea4\u7684\u5b50\u8f7d\u6ce2\u4e0a\u8fdb\u884c\u4f20\u8f93<\/p>\n","protected":false},"author":1,"featured_media":96916,"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-96915","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ofdm"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/96915"}],"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=96915"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/96915\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/96916"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=96915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=96915"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=96915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}