{"id":90630,"date":"2024-04-03T17:31:11","date_gmt":"2024-04-03T09:31:11","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=90630"},"modified":"2024-04-03T17:31:16","modified_gmt":"2024-04-03T09:31:16","slug":"ojsylhyqd","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/90630.html","title":{"rendered":"OFDM\u6280\u672f\u539f\u7406\u548c\u4f18\u7f3a\u70b9"},"content":{"rendered":"\n

\u3000\u3000OFDM<\/a>(\u6b63\u4ea4\u9891\u5206\u590d\u7528)\u6280\u672f<\/strong>\u662f\u4e00\u79cd\u5728\u6570\u5b57\u901a\u4fe1\u4e2d\u5e7f\u6cdb\u4f7f\u7528\u7684\u8c03\u5236\u6280\u672f\uff0c\u5b83\u901a\u8fc7\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u89e3\u4e3a\u591a\u4e2a\u4f4e\u901f\u5b50\u6570\u636e\u6d41\uff0c\u5e76\u5728\u4e0d\u540c\u7684\u5b50\u8f7d\u6ce2\u4e0a\u8fdb\u884c\u4f20\u8f93\u6765\u5b9e\u73b0\u3002\u8fd9\u79cd\u65b9\u6cd5\u5141\u8bb8OFDM\u7cfb\u7edf\u6709\u6548\u5730\u5bf9\u6297\u9891\u7387\u9009\u62e9\u6027\u8870\u843d\u548c\u514b\u670d\u4fe1\u53f7\u7b26\u53f7\u95f4\u7684\u5e72\u6270(inter-symbol interference)\uff0c\u5e76\u4e14\u53ef\u4ee5\u4e0eMIMO(\u591a\u8f93\u5165\u591a\u8f93\u51fa)\u6280\u672f\u9ad8\u6548\u7ed3\u5408\uff0c\u5b9e\u73b0\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u3002<\/p>\n\n\n\n

\u3000\u3000OFDM\u6280\u672f\u7684\u4f18\u70b9\u5305\u62ec\u9ad8\u901f\u4f20\u8f93\u3001\u6297\u591a\u5f84\u8870\u843d\u80fd\u529b\u5f3a\u3001\u6297\u5e72\u6270\u80fd\u529b\u5f3a\u7b49\u3002<\/strong>\u5b83\u8fd8\u5177\u6709\u9ad8\u9891\u8c31\u5229\u7528\u7387\u3001\u6297\u8870\u843d\u80fd\u529b\u5f3a\u548c\u7075\u6d3b\u6027\u5f3a\u7b49\u7279\u70b9\u3002\u6b64\u5916\uff0cOFDM\u63d0\u4f9b\u9891\u8c31\u6548\u7387\u3001\u6297\u591a\u5f84\u5e72\u6270\u6027\u548c\u96f6\u8f7d\u6ce2\u95f4\u5e72\u6270\u7b49\u4f18\u52bf\u3002\u8fd9\u4e9b\u7279\u6027\u4f7f\u5f97OFDM\u6210\u4e3a\u5bbd\u5e26\u6570\u5b57\u901a\u4fe1\u4e2d\u7684\u5e38\u7528\u8c03\u5236\u65b9\u6848\u3002<\/p>\n\n\n\n

\u3000\u3000\u7136\u800c\uff0cOFDM\u6280\u672f\u4e3b\u8981\u7684\u7f3a\u70b9\u5305\u62ec\u9891\u8c31\u6548\u7387\u4f4e\u3001\u590d\u6742\u5ea6\u9ad8\u3001\u65f6\u57df\u6296\u52a8\u7b49\u95ee\u9898\u3002<\/strong>\u6b64\u5916\uff0cOFDM\u7cfb\u7edf\u9700\u8981\u4f7f\u7528\u5bc6\u5ea6\u66f4\u9ad8\u7684\u661f\u5ea7\u70b9\u8fdb\u884c\u7b26\u53f7\u6620\u5c04\uff0c\u4ee5\u4fdd\u6301\u8f83\u9ad8\u7684\u9891\u8c31\u5229\u7528\u7387\u548c\u9ad8\u901f\u7387\u7684\u6570\u636e\u4f20\u8f93\uff0c\u8fd9\u589e\u52a0\u4e86\u7cfb\u7edf\u7684\u590d\u6742\u6027\u3002\u8fd8\u6709\u5e27\u540c\u6b65\u56f0\u96be\u7684\u95ee\u9898\u4e5f\u9700\u8981\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u8fdb\u884c\u5145\u5206\u7684\u8003\u8651\u548c\u6743\u8861\u3002<\/p>\n\n\n\n

\u3000\u3000OFDM\u6280\u672f\u4ee5\u5176\u9ad8\u901f\u4f20\u8f93\u3001\u5f3a\u5927\u7684\u6297\u5e72\u6270\u80fd\u529b\u548c\u9ad8\u9891\u8c31\u5229\u7528\u7387\u7b49\u4f18\u70b9\uff0c\u5728\u65e0\u7ebf\u901a\u4fe1\u9886\u57df\u5f97\u5230\u4e86\u5e7f\u6cdb\u5e94\u7528\u3002\u4f46\u540c\u65f6\uff0c\u5b83\u4e5f\u9762\u4e34\u7740\u9891\u8c31\u6548\u7387\u4f4e\u3001\u7cfb\u7edf\u590d\u6742\u5ea6\u9ad8\u7b49\u6311\u6218\uff0c\u8fd9\u4e9b\u90fd\u9700\u8981\u5728\u8bbe\u8ba1\u548c\u5b9e\u65bd\u8fc7\u7a0b\u4e2d\u52a0\u4ee5\u89e3\u51b3\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001 OFDM\u6280\u672f\u5728\u4e0d\u540c\u9891\u6bb5\u7684\u5e94\u7528\u6848\u4f8b\u6709\u54ea\u4e9b?<\/h2>\n\n\n\n

\u3000\u3000OFDM\u6280\u672f\u5728\u4e0d\u540c\u9891\u6bb5\u7684\u5e94\u7528\u6848\u4f8b\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/strong><\/p>\n\n\n\n

    \n
  • \u3000\u3000\u65e0\u7ebf\u5c40\u57df\u7f51(WLAN)<\/strong>\uff1aOFDM\u6280\u672f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8eIEEE 802.11a\u548cIEEE 802.11g\u6807\u51c6\u4e2d\uff0c\u8fd9\u4e9b\u6807\u51c6\u5b9a\u4e49\u4e86\u65e0\u7ebf\u5c40\u57df\u7f51\u7684\u7269\u7406\u5c42\u548c\u6570\u636e\u94fe\u8def\u5c42\u89c4\u8303\uff0c\u4f7f\u5f97OFDM\u6280\u672f\u5f97\u4ee5\u5e7f\u6cdb\u5e94\u7528\u3002\u6b64\u5916\uff0cOFDM\u6280\u672f\u8fd8\u5e94\u7528\u5728HiperLAN\/2\u7269\u7406\u5c42\u4e2d\uff0c\u4ee5\u53ca\u57282.4 GHz\u548c5.8 GHz\u4e24\u4e2a\u9891\u6bb5\u7684IEEE802.11\u6807\u51c6\u7684ISM\u9891\u6bb5\u4e2d\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u79fb\u52a8\u901a\u4fe1\u9886\u57df<\/strong>\uff1aOFDM\u6280\u672f\u5728\u79fb\u52a8\u901a\u4fe1\u9886\u57df\u4e5f\u53d1\u6325\u4e86\u91cd\u8981\u4f5c\u7528\uff0c\u5c3d\u7ba1\u5177\u4f53\u7684\u5e94\u7528\u6848\u4f8b\u6ca1\u6709\u5728\u6211\u641c\u7d22\u5230\u7684\u8d44\u6599\u4e2d\u8be6\u7ec6\u8bf4\u660e\uff0c\u4f46\u53ef\u4ee5\u63a8\u65ad\u5176\u5728\u63d0\u9ad8\u7cfb\u7edf\u4f20\u8f93\u901f\u7387\u548c\u53ef\u9760\u6027\u65b9\u9762\u7684\u8d21\u732e\u3002<\/li>\n\n\n\n
  • \u3000\u30005G\u7f51\u7edc<\/strong>\uff1a\u57285G\u7f51\u7edc\u4e2d\uff0cOFDM\u6280\u672f\u56e0\u5176\u80fd\u591f\u63d0\u9ad8\u9891\u8c31\u6548\u7387\u548c\u6297\u591a\u5f84\u5e72\u6270\u80fd\u529b\u800c\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002\u8fd9\u8868\u660eOFDM\u6280\u672f\u57285G\u7f51\u7edc\u7684\u53d1\u5c55\u548c\u5b9e\u73b0\u4e2d\u626e\u6f14\u4e86\u5173\u952e\u89d2\u8272\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u5149\u901a\u4fe1\u9886\u57df<\/strong>\uff1aOFDM\u6280\u672f\u4e5f\u88ab\u7528\u4e8e\u5149\u6b63\u4ea4\u9891\u5206\u590d\u7528\u6280\u672f\u4e2d\uff0c\u6709\u6548\u89e3\u51b3\u7531\u8272\u6563\u4fe1\u9053\u5f15\u8d77\u7684\u7b26\u53f7\u95f4\u5e72\u6270\u95ee\u9898\uff0c\u80fd\u591f\u5e7f\u6cdb\u5730\u7528\u4e8e\u5404\u79cd\u5149\u901a\u4fe1\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n\n\n\n

    \u3000\u3000OFDM\u6280\u672f\u5728\u65e0\u7ebf\u5c40\u57df\u7f51\u3001\u79fb\u52a8\u901a\u4fe1\u30015G\u7f51\u7edc\u4ee5\u53ca\u5149\u901a\u4fe1\u7b49\u591a\u4e2a\u9891\u6bb5\u548c\u9886\u57df\u4e2d\u90fd\u6709\u5e94\u7528\u6848\u4f8b<\/strong>\uff0c\u5c55\u73b0\u4e86\u5176\u5728\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u7387\u3001\u53ef\u9760\u6027\u548c\u9891\u8c31\u5229\u7528\u7387\u65b9\u9762\u7684\u4f18\u52bf\u3002<\/p>\n\n\n\n

    \u3000\u3000\u4e8c\u3001 \u5982\u4f55\u6709\u6548\u964d\u4f4eOFDM\u7cfb\u7edf\u7684\u65f6\u57df\u6296\u52a8\u548c\u5cf0\u5747\u529f\u7387\u6bd4(PAPR)?<\/h2>\n\n\n\n

    \u3000\u3000\u6709\u6548\u964d\u4f4eOFDM\u7cfb\u7edf\u7684\u65f6\u57df\u6296\u52a8\u548c\u5cf0\u5747\u529f\u7387\u6bd4(PAPR)\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\u3002\u9996\u5148\uff0c\u5bf9\u4e8ePAPR\u7684\u964d\u4f4e\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u51e0\u79cd\u6280\u672f\uff1a<\/p>\n\n\n\n

      \n
    • \u3000\u30002\u500d\u63d2\u503cFIR\u6ee4\u6ce2\u5668\u5b9e\u73b02\u500d\u8fc7\u91c7\u6837\uff1a\u8fd9\u79cd\u65b9\u6cd5\u901a\u8fc7\u589e\u52a0\u91c7\u6837\u7387\u6765\u51cf\u5c11\u4fe1\u53f7\u7684\u9ad8\u9891\u6210\u5206\uff0c\u4ece\u800c\u964d\u4f4ePAPR\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u9650\u5e45Clipping\u64cd\u4f5c\uff1a\u901a\u8fc7\u5bf9\u4fe1\u53f7\u8fdb\u884c\u9650\u5e45\u5904\u7406\uff0c\u5c06\u8d85\u51fa\u7279\u5b9a\u9608\u503c\u7684\u4fe1\u53f7\u90e8\u5206\u526a\u88c1\u6389\uff0c\u4ee5\u51cf\u5c11\u5cf0\u503c\u529f\u7387\u3002<\/li>\n\n\n\n
    • \u3000\u3000DFT\u6269\u9891\u6280\u672f\uff1a\u5229\u7528\u79bb\u6563\u5085\u91cc\u53f6\u53d8\u6362(DFT)\u6269\u5c55\u9891\u8c31\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u5728\u4e0d\u6539\u53d8\u4fe1\u53f7\u5e26\u5bbd\u7684\u60c5\u51b5\u4e0b\uff0c\u6709\u6548\u964d\u4f4ePAPR\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u8109\u51b2\u6574\u5f62\u65b9\u6cd5\uff1a\u901a\u8fc7\u5728\u4fe1\u53f7\u901a\u8fc7\u529f\u7387\u653e\u5927\u5668\u4e4b\u524d\u5bf9\u5176\u8fdb\u884c\u7578\u53d8\u6216\u589e\u52a0\u9644\u52a0\u4fe1\u53f7\u6765\u589e\u5927\u4fe1\u53f7\u7684\u5e73\u5747\u529f\u7387\uff0c\u4ece\u800c\u51cf\u5c0f\u9ad8\u7684\u5cf0\u503c\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u5e45\u5ea6\u9884\u77eb\u6b63\uff1a\u901a\u8fc7\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5e45\u5ea6\u9884\u77eb\u6b63\uff0c\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u964d\u4f4e\u7cfb\u7edf\u7684\u5cf0\u5747\u529f\u7387\u6bd4\uff0c\u540c\u65f6\u4fdd\u6301\u8f83\u5c0f\u7684\u5e26\u5916\u529f\u7387\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u57fa\u4e8e\u5206\u6bb5\u975e\u7ebf\u6027\u538b\u6269\u7684PAPR\u6291\u5236\u7b97\u6cd5\uff1a\u8be5\u7b97\u6cd5\u7ed3\u5408\u901a\u7528\u745e\u5229\u548c\u4e09\u89d2\u5206\u5e03\uff0c\u5bf9\u5e45\u5ea6\u8f83\u5927\u7684\u4fe1\u53f7\u8fdb\u884c\u5904\u7406\uff0c\u4ee5\u964d\u4f4ePAPR\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u5bf9\u4e8e\u65f6\u57df\u6296\u52a8\u7684\u964d\u4f4e\uff0c\u867d\u7136\u76f4\u63a5\u6211\u641c\u7d22\u5230\u7684\u8d44\u6599\u8f83\u5c11\uff0c\u4f46\u53ef\u4ee5\u63a8\u65ad\uff0c\u51cf\u5c11\u7cfb\u7edf\u4e2d\u7684\u76f8\u4f4d\u6296\u52a8\u53ef\u80fd\u6709\u52a9\u4e8e\u964d\u4f4e\u65f6\u57df\u6296\u52a8\u3002\u4f8b\u5982\uff0c\u8df3\u9891\u7cfb\u7edf\u4e2d\u9891\u7387\u5408\u6210\u5668\u7684\u8f93\u51fa\u4fe1\u53f7\u5728\u9891\u7387\u5207\u6362\u65f6\u4f1a\u4ea7\u751f\u76f8\u4f4d\u6296\u52a8\uff0c\u8fd9\u8868\u660e\u901a\u8fc7\u4f18\u5316\u9891\u7387\u5408\u6210\u5668\u7684\u8bbe\u8ba1\u6216\u6539\u8fdb\u5176\u6027\u80fd\uff0c\u53ef\u80fd\u6709\u52a9\u4e8e\u51cf\u5c11\u65f6\u57df\u6296\u52a8\u7684\u5f71\u54cd\u3002<\/li>\n<\/ul>\n\n\n\n

      \u3000\u3000\u901a\u8fc7\u7ed3\u5408\u4e0a\u8ff0\u6280\u672f\u548c\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u964d\u4f4eOFDM\u7cfb\u7edf\u7684\u65f6\u57df\u6296\u52a8\u548cPAPR\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u8fc7\u91c7\u6837\u3001\u9650\u5e45\u5904\u7406\u3001DFT\u6269\u9891\u3001\u8109\u51b2\u6574\u5f62\u3001\u5e45\u5ea6\u9884\u77eb\u6b63\u4ee5\u53ca\u91c7\u7528\u7279\u5b9a\u7684PAPR\u6291\u5236\u7b97\u6cd5\u7b49\u3002<\/p>\n\n\n\n

      \u3000\u3000\u4e09\u3001 OFDM\u4e0eMIMO\u6280\u672f\u7ed3\u5408\u7684\u5177\u4f53\u5b9e\u73b0\u65b9\u5f0f\u548c\u4f18\u52bf\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n

      \u3000\u3000OFDM\u4e0eMIMO\u6280\u672f\u7ed3\u5408\u7684\u5177\u4f53\u5b9e\u73b0\u65b9\u5f0f\u4e3b\u8981\u5305\u62ec\u5728\u53d1\u9001\u7aef\u4f7f\u7528\u591a\u4e2a\u5929\u7ebf\u8fdb\u884c\u6570\u636e\u4f20\u8f93\uff0c\u5e76\u5229\u7528OFDM\u6280\u672f\u5c06\u6570\u636e\u5206\u6210\u591a\u4e2a\u5b50\u6d41\u8fdb\u884c\u4f20\u8f93\u3002\u8fd9\u79cd\u7ed3\u5408\u65b9\u5f0f\u53ef\u4ee5\u5728\u76f8\u540c\u7684\u9891\u8c31\u5e26\u5bbd\u4e0b\u5b9e\u73b0\u66f4\u9ad8\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u66f4\u597d\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002\u5177\u4f53\u5230\u7269\u7406\u5c42\u7684\u5b9e\u73b0\uff0c\u5305\u62ec\u52a0\u6270\u3001\u8c03\u5236\u3001\u5c42\u6620\u5c04\u3001\u9884\u7f16\u7801\u3001\u8d44\u6e90\u6620\u5c04\u3001OFDM\u7b26\u53f7\u751f\u6210\u7b49\u6b65\u9aa4\uff0c\u5176\u4e2d\u5c42\u6620\u5c04\u548c\u9884\u7f16\u7801\u6b65\u9aa4\u5b9e\u73b0MIMO\uff0c\u800cOFDM\u7b26\u53f7\u751f\u6210\u5219\u662f\u5728\u8fd9\u4e00\u8fc7\u7a0b\u4e2d\u5b9e\u73b0\u7684\u53e6\u4e00\u5173\u952e\u73af\u8282\u3002<\/p>\n\n\n\n

      \u3000\u3000\u8fd9\u79cd\u7ed3\u5408\u7684\u4f18\u52bf\u5728\u4e8e\uff0c\u5b83\u80fd\u591f\u5728\u4e0d\u589e\u52a0\u5e26\u5bbd\u7684\u60c5\u51b5\u4e0b\uff0c\u663e\u8457\u63d0\u9ad8\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u7684\u4f20\u8f93\u901f\u7387\u548c\u53ef\u9760\u6027\u3002\u6b64\u5916\uff0cMIMO-OFDM\u6280\u672f\u8fd8\u80fd\u591f\u6709\u6548\u62b5\u6297\u591a\u5f84\u5e72\u6270\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5145\u5206\u5229\u7528MIMO\u548cOFDM\u5404\u81ea\u7684\u4f18\u52bf\uff0c\u800c\u53c8\u4e92\u76f8\u5f25\u8865\u4e0d\u8db3\u4e4b\u5904\uff0c\u4ece\u800c\u5728\u4e0d\u9700\u8981\u589e\u52a0\u4f20\u8f93\u529f\u7387\u548c\u6269\u5927\u5e26\u5bbd\u7684\u524d\u63d0\u4e0b\u589e\u52a0\u6570\u636e\u7684\u4f20\u8f93\u901f\u7387\u3002\u8fd9\u4f7f\u5f97MIMO-OFDM\u6210\u4e3a\u65e0\u7ebf\u901a\u4fe1\u9886\u57df\u7684\u4e00\u4e2a\u7814\u7a76\u70ed\u70b9\uff0c\u88ab\u8ba4\u4e3a\u662f\u901a\u5f806G\u65e0\u7ebf\u6807\u51c6\u7684\u6865\u6881\u3002<\/p>\n\n\n\n

      \u3000\u3000\u56db\u3001 \u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5982\u4f55\u89e3\u51b3OFDM\u7cfb\u7edf\u7684\u5e27\u540c\u6b65\u95ee\u9898?<\/h2>\n\n\n\n

      \u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u89e3\u51b3OFDM\u7cfb\u7edf\u7684\u5e27\u540c\u6b65\u95ee\u9898\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n

        \n
      • \u3000\u3000\u5b9a\u65f6\u540c\u6b65\uff1a\u5305\u62ec\u5e27(\u5206\u7ec4)\u540c\u6b65\u548c\u7b26\u53f7\u540c\u6b65\u4e24\u79cd\u3002\u5e27\u540c\u6b65\u7528\u4e8e\u786e\u5b9a\u6570\u636e\u5206\u7ec4\u7684\u8d77\u59cb\u4f4d\u7f6e\uff0c\u800c\u7b26\u53f7\u540c\u6b65\u5219\u5173\u6ce8\u4e8eOFDM\u7b26\u53f7\u5185\u90e8\u7684\u540c\u6b65\u3002\u8fd9\u662f\u56e0\u4e3a\u8981\u5206\u6e05OFDM\u7b26\u53f7\u95f4\uff0c\u524d\u63d0\u4fbf\u662f\u8981\u77e5\u9053\u4e00\u4e2aOFDM\u7b26\u53f7\u7684\u8d77\u59cb\u70b9\u548c\u7ed3\u675f\u70b9\u5728\u54ea\u91cc\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u8f7d\u6ce2\u9891\u7387\u540c\u6b65\uff1a\u63a5\u6536\u673a\u9700\u9996\u5148\u786e\u5b9a\u63a5\u6536OFDM\u7b26\u53f7\u7684\u8d77\u59cb\u65f6\u523b\uff0c\u7136\u540e\u4f30\u8ba1\u63a5\u6536\u673a\u4e0e\u53d1\u5c04\u673a\u4e4b\u95f4\u7684\u8f7d\u6ce2\u9891\u7387\u504f\u79fb\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u8c03\u6574\u3002\u8fd9\u4e00\u6b65\u9aa4\u5bf9\u4e8e\u786e\u4fdd\u4fe1\u53f7\u7684\u6709\u6548\u4f20\u8f93\u81f3\u5173\u91cd\u8981\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u91c7\u6837\u65f6\u949f\u540c\u6b65\uff1a\u9664\u4e86\u9891\u7387\u504f\u79fb\u5916\uff0c\u63a5\u6536\u673a\u548c\u53d1\u9001\u673a\u4e4b\u95f4\u540c\u6837\u5b58\u5728\u91c7\u6837\u65f6\u949f\u7684\u504f\u79fb\u3002\u867d\u7136\u65f6\u95f4\u504f\u5dee\u4f1a\u7834\u574f\u5b50\u8f7d\u6ce2\u4e4b\u95f4\u7684\u6b63\u4ea4\u6027\uff0c\u4f46\u5176\u5f71\u54cd\u57fa\u672c\u53ef\u4ee5\u5ffd\u7565\u3002\u901a\u8fc7\u5b9a\u65f6\u6062\u590d\u6280\u672f\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5206\u4e3aOFDM\u5757\u540c\u6b65\u548c\u91c7\u6837\u65f6\u949f\u540c\u6b65\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u5229\u7528\u7279\u5b9a\u5e8f\u5217\u8fdb\u884c\u5e27\u540c\u6b65\uff1a\u4e00\u79cd\u57fa\u4e8ePSS\u5e8f\u5217\u7684OFDM\u7cfb\u7edf\u4f4e\u590d\u6742\u9ad8\u7cbe\u5ea6\u5e27\u540c\u6b65\u65b9\u6cd5\uff0c\u901a\u8fc7\u57fa\u7ad9\u4e0e\u7528\u6237\u4e4b\u95f4\u901a\u8fc7\u5e27\u5b9a\u65f6\u540c\u6b65\uff0c\u786e\u5b9a\u65e0\u7ebf\u5e27\u7684\u8d77\u59cb\u70b9\uff0c\u4ece\u800c\u987a\u5229\u8fdb\u884c\u540e\u7eed\u7684\u901a\u4fe1\u4fe1\u53f7\u5904\u7406\u3002\u540c\u6b65\u7cbe\u5ea6\u76f4\u63a5\u5f71\u54cd\u5230\u7cfb\u7edf\u7684\u4fe1\u53f7\u5904\u7406\u6027\u80fd\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u91c7\u7528\u7279\u5b9a\u7b97\u6cd5\u4f18\u5316\u5e27\u540c\u6b65\u6027\u80fd\uff1a\u4f8b\u5982\uff0c\u5728\u5206\u5e03\u5f0fMIMO-OFDM\u7cfb\u7edf\u4e2d\uff0c\u901a\u8fc7\u5206\u6790\u5e27\u540c\u6b65\u7b97\u6cd5\u4e2d\u6700\u5927\u503c\u53d6\u503c\u4f4d\u7f6e\u5224\u51b3\u6b63\u786e\u7684\u6982\u7387\uff0c\u6709\u6548\u89e3\u51b3\u540c\u6b65\u95ee\u9898\u3002\u7406\u8bba\u4e0a\uff0c\u5929\u7ebf\u6570\u76ee\u8d8a\u591a\u6027\u80fd\u8d8a\u597d\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u9700\u8981\u8003\u8651\u7b97\u6cd5\u7684\u590d\u6742\u5ea6\u548c\u5b9e\u7528\u6027\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u4ece\u63a5\u6536\u5230\u7684\u6570\u636e\u4e2d\u9009\u53d6\u7279\u5b9a\u5e8f\u5217\u8fdb\u884c\u5e27\u540c\u6b65\uff1a\u4f8b\u5982\uff0c\u9009\u53d6\u8d77\u59cb\u4f4d\u7f6e\u4e3ad\u3001\u957f\u5ea6\u4e3aN\u7684\u5e8f\u5217S\uff0c\u8ba1\u7b97S\u7684\u524d\u534a\u90e8\u5206\u548c\u540e\u534a\u90e8\u5206\uff0c\u4ee5\u6b64\u6765\u786e\u5b9a\u5e27\u540c\u6b65\u7684\u4f4d\u7f6e\u3002<\/li>\n<\/ul>\n\n\n\n

        \u3000\u3000\u89e3\u51b3OFDM\u7cfb\u7edf\u7684\u5e27\u540c\u6b65\u95ee\u9898\u9700\u8981\u7efc\u5408\u8003\u8651\u5b9a\u65f6\u540c\u6b65\u3001\u8f7d\u6ce2\u9891\u7387\u540c\u6b65\u3001\u91c7\u6837\u65f6\u949f\u540c\u6b65\u7b49\u591a\u4e2a\u65b9\u9762\uff0c\u5e76\u53ef\u80fd\u7ed3\u5408\u7279\u5b9a\u7684\u7b97\u6cd5\u6216\u5e8f\u5217\u6765\u63d0\u9ad8\u540c\u6b65\u7684\u7cbe\u5ea6\u548c\u6548\u7387\u3002<\/p>\n\n\n\n

        \u3000\u3000\u4e94\u3001 \u9488\u5bf9OFDM\u6280\u672f\u7684\u590d\u6742\u5ea6\uff0c\u76ee\u524d\u6709\u54ea\u4e9b\u4f18\u5316\u7b97\u6cd5\u6216\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u5176\u6548\u7387?<\/h2>\n\n\n\n

        \u3000\u3000\u9488\u5bf9OFDM\u6280\u672f\u7684\u590d\u6742\u5ea6\uff0c\u76ee\u524d\u6709\u591a\u79cd\u4f18\u5316\u7b97\u6cd5\u6216\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u5176\u6548\u7387\u3002\u8fd9\u4e9b\u65b9\u6cd5\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n\n\n\n

          \n
        • \u3000\u3000\u6539\u8fdb\u7684\u9009\u62e9\u6027\u6620\u5c04(SLM)\u7b97\u6cd5\uff1a\u901a\u8fc7\u7ed3\u5408\u8f6c\u6362\u5411\u91cf\u548c\u968f\u673a\u7b5b\u9009\u5e8f\u5217\uff0c\u63d0\u51fa\u4e86CR-SLM\u7b97\u6cd5\uff0c\u8be5\u7b97\u6cd5\u901a\u8fc7\u5bf9\u539f\u59cb\u4fe1\u53f7\u5e8f\u5217\u8fdb\u884c\u7b49\u5206\uff0c\u5e76\u5bf9\u6570\u636e\u5e8f\u5217\u7684\u524d\u534a\u90e8\u5206\u4e0e\u8f6c\u6362\u5411\u91cf\u76f8\u4e58\u8fdb\u884c\u5faa\u73af\u5377\u79ef\uff0c\u4ee5\u964d\u4f4e\u8ba1\u7b97\u590d\u6742\u5ea6\u5e76\u63d0\u9ad8\u7cfb\u7edf\u7684\u9891\u8c31\u5229\u7528\u6548\u7387\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u8d44\u6e90\u5206\u914d\u7b97\u6cd5\uff1a\u57fa\u4e8eOFDM\u901a\u4fe1\u7cfb\u7edf\u7684\u4f4e\u590d\u6742\u5ea6\u8d44\u6e90\u5206\u914d\u7b97\u6cd5\uff0c\u901a\u8fc7Matlab\u6027\u80fd\u4eff\u771f\uff0c\u5c55\u793a\u4e86\u7b97\u6cd5\u7684\u8fd0\u884c\u6548\u679c\u548c\u6838\u5fc3\u7a0b\u5e8f\uff0c\u65e8\u5728\u4f18\u5316\u8d44\u6e90\u5206\u914d\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u6548\u7387\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u4fe1\u9053\u4f30\u8ba1\u65b9\u6cd5\uff1a\u4f7f\u7528LS\u3001LMMSE\u548c\u4f4e\u590d\u6742\u5ea6LMMSE\u65b9\u6cd5\u8fdb\u884cOFDM\u4fe1\u9053\u4f30\u8ba1\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u5229\u7528\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\u7b80\u5316\u4e86\u7cfb\u7edf\u5b9e\u73b0\u7684\u590d\u6742\u5ea6\uff0c\u540c\u65f6\u4fdd\u6301\u4e86OFDM\u7cfb\u7edf\u7684\u4e00\u4e2a\u91cd\u8981\u4f18\u70b9\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u57fa\u4e8e\u538b\u7f29\u611f\u77e5\u7684\u7a00\u758f\u4fe1\u9053\u4f30\u8ba1\u5bfc\u9891\u4f18\u5316\u7b97\u6cd5\uff1a\u901a\u8fc7\u589e\u5927\u968f\u673a\u751f\u6210\u6570\u8fdb\u884c\u5206\u7ec4\u5e76\u8ba1\u7b97\u6bcf\u7ec4\u7684\u4e92\u76f8\u5173\u503c\uff0c\u4f18\u5316\u4fe1\u9053\u4f30\u8ba1\u6027\u80fd\uff0c\u8fd9\u79cd\u65b9\u6cd5\u57fa\u4e8e\u6d4b\u91cf\u77e9\u9635\u4e92\u76f8\u5173\u6700\u5c0f\u5316\u51c6\u5219\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u964d\u4f4ePAPR(\u5cf0\u5747\u6bd4)\u7684\u65b9\u6cd5\uff1a\u5305\u62ecIPTS(\u9009\u62e9\u6027\u6620\u5c04\u8fed\u4ee3\u524a\u5cf0)\u3001OPTS(\u4f18\u5316\u7684PTS)\u548cCEPTS(\u538b\u7f29\u6269\u5c55\u53d8\u6362\u9009\u62e9\u6027\u6620\u5c04)\u7b49PAPR\u6291\u5236\u7b97\u6cd5\uff0c\u8fd9\u4e9b\u7b97\u6cd5\u65e8\u5728\u964d\u4f4eOFDM\u4fe1\u53f7\u7684\u5cf0\u5747\u6bd4\uff0c\u63d0\u9ad8\u901a\u4fe1\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/li>\n\n\n\n
        • \u3000\u3000SLM\u6539\u8fdb\u7b97\u6cd5\uff1a\u901a\u8fc7\u5bf9\u539f\u59cb\u6570\u636e\u5206\u6bb5\u540e\u8fdb\u884c\u7ec4\u5185\u6270\u7801\uff0c\u6253\u7834\u539f\u59cb\u6570\u636e\u5e8f\u5217\u7684\u81ea\u76f8\u5173\u6027\uff0c\u964d\u4f4e\u6240\u6709\u5b50\u8f7d\u6ce2\u4e0a\u7684PAPR\uff0c\u540c\u65f6\u517c\u987e\u5b9e\u9645\u5e94\u7528\u5b9e\u73b0\u7684\u53ef\u884c\u6027\u4e0e\u964d\u4f4e\u7cfb\u7edf\u7684\u590d\u6742\u5ea6\u3002<\/li>\n\n\n\n
        • \u3000\u3000\u57fa\u4e8e\u9057\u4f20\u7b97\u6cd5(GA)\u7684\u90e8\u5206\u4f20\u8f93\u5e8f\u5217(PTS)\u65b9\u6cd5\uff1a\u9488\u5bf9GA-PTS\u65b9\u6cd5\u5728\u964d\u4f4eOFDM\u7cfb\u7edfPAPR\u65f6\u5b58\u5728\u7684\u95ee\u9898\uff0c\u63d0\u51fa\u4e86\u57fa\u4e8e\u5206\u6bb5\u66ff\u6362\u7684\u4f4e\u590d\u6742\u5ea6\u964d\u4f4eOFDM\u5cf0\u5747\u6bd4\u7b97\u6cd5\uff0c\u4ee5\u907f\u514d\u65e9\u719f\u6536\u655b\u5e76\u964d\u4f4e\u7b97\u6cd5\u590d\u6742\u5ea6\u3002<\/li>\n<\/ul>\n\n\n\n

          \u3000\u3000\u8fd9\u4e9b\u65b9\u6cd5\u548c\u7b97\u6cd5\u901a\u8fc7\u4e0d\u540c\u7684\u6280\u672f\u8def\u5f84\uff0c\u65e8\u5728\u964d\u4f4eOFDM\u7cfb\u7edf\u7684\u8ba1\u7b97\u590d\u6742\u5ea6\uff0c\u63d0\u9ad8\u5176\u9891\u8c31\u5229\u7528\u6548\u7387\u548c\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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