{"id":7729,"date":"2024-07-08T21:01:01","date_gmt":"2024-07-08T13:01:01","guid":{"rendered":""},"modified":"2024-07-08T21:01:01","modified_gmt":"2024-07-08T13:01:01","slug":"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa","status":"publish","type":"post","link":"https:\/\/mushiming.com\/7729.html","title":{"rendered":"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa"},"content":{"rendered":"
\n
\n \"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa\n <\/div>\n

\u6765\u6e90\uff1a\u53f8\u6d77\u98de, \u80e1\u5174\u67f3, \u53f2\u9707 et.al. \u57fa\u4e8e\u8054\u5408\u7279\u5f81\u53c2\u6570\u63d0\u53d6\u7684\u975e\u5408\u4f5c\u4fe1\u53f7\u8c03\u5236\u8bc6\u522b\u7b97\u6cd5.\u901a\u4fe1\u5b66\u62a5<\/i>[J], 2020, 41(7): 172-185 doi:10.11959\/j.issn.1000-436x.<\/p>\n

\u4e0b\u8f7d\u5730\u5740\uff1ahttp:\/\/www.infocomm-journal.com\/txxb\/CN\/article\/downloadArticleFile.do?attachType=PDF&id=<\/p>\n

\u6458\u8981<\/p>\n

\u9488\u5bf9\u5f53\u524d\u7535\u78c1\u73af\u5883\u4e2d\u8c03\u5236\u65b9\u5f0f\u590d\u6742\uff0c\u7528\u9891\u8bbe\u5907\u589e\u591a\uff0c\u9891\u8c31\u62e5\u585e\u4e14\u7535\u78c1\u73af\u5883\u5e72\u6270\u589e\u52a0\u7684\u60c5\u51b5\uff0c\u7814\u7a76\u4e86\u4ee5\u975e\u5408\u4f5c\u901a\u4fe1\u4e3a\u80cc\u666f\u7684OFDM\u4fe1\u53f7\u68c0\u6d4b\u4e0e\u5b50\u8f7d\u6ce2\u8bc6\u522b\u7b97\u6cd5\u3002\u5229\u7528OFDM\u4fe1\u53f7\u4e0e\u5355\u8f7d\u6ce2\u4fe1\u53f7\u5728\u65f6\u57df\u4e0a\u7684\u4e0d\u540c\u5206\u5e03\u72b6\u6001\u63d0\u51fa\u4e00\u79cd\u5229\u7528\u8054\u5408\u7279\u5f81\u53c2\u6570\u89e3\u51b3\u63a5\u6536\u4fe1\u53f7\u4e2dOFDM\u7684\u5b58\u5728\u6027\u95ee\u9898\uff1b\u9488\u5bf9\u4fe1\u9053\u4f20\u8f93\u7ed9\u4fe1\u53f7\u5e26\u6765\u7684\u76f8\u79fb\u548c\u9891\u504f\u95ee\u9898\uff0c\u6839\u636e\u5468\u671f\u5e73\u7a33\u6027\u8fdb\u884c\u53c2\u6570\u76f2\u4f30\u8ba1\u5f97\u5230\u4fe1\u53f7\u5148\u9a8c\u4fe1\u606f\uff1b\u5728\u5df2\u83b7\u53d6\u4fe1\u53f7\u5148\u9a8c\u4fe1\u606f\u7684\u57fa\u7840\u4e0a\uff0c\u63d0\u51fa\u4e00\u79cd\u975e\u5408\u4f5cOFDM\u4fe1\u53f7\u5b50\u8f7d\u6ce2\u4fe1\u53f7\u591a\u5c42\u7ea7\u5206\u7c7b\u8bc6\u522b\u7684\u65b9\u6cd5\u3002\u7531\u6b64\u8bbe\u8ba1\u4e86\u57fa\u4e8e\u975e\u5408\u4f5c\u901a\u4fe1\u7cfb\u7edf OFDM \u4fe1\u53f7\u68c0\u6d4b\u4e0e\u5b50\u8f7d\u6ce2\u8c03\u5236\u8bc6\u522b\u7684\u6a21\u578b\uff0c\u6700\u540e\u5b8c\u6210\u4e86\u672a\u77e5\u4fe1\u53f7\u7684\u8c03\u5236\u8bc6\u522b\u3002\u4eff\u771f\u5b9e\u9a8c\u8868\u660e\uff0c\u5728\u975e\u5408\u4f5c\u901a\u4fe1\u7cfb\u7edf\u4e2d\u80fd\u51c6\u786e\u8bc6\u522b OFDM \u4fe1\u53f7\u4e0e\u5355\u8f7d\u6ce2\u4fe1\u53f7\uff0c\u80fd\u5bf9\u63a5\u6536\u65b9OFDM\u4fe1\u53f7\u5b50\u8f7d\u6ce2\u4e2d\u7684\u7a7a\u5b50\u8f7d\u6ce2\u3001QPSK\u548c16QAM\u8fbe\u5230\u7406\u60f3\u7684\u8c03\u5236\u8bc6\u522b\u6548\u679c\uff0c\u514b\u670d\u4e86\u4fe1\u9053\u4f20\u8f93\u5e26\u6765\u7684\u76f8\u79fb\u548c\u9891\u504f\u95ee\u9898\uff0c\u63d0\u9ad8\u4e86\u8c03\u5236\u65b9\u5f0f\u8bc6\u522b\u7684\u51c6\u786e\u7387\u3002<\/p>\n

    \n
  1. \u5f15\u8a00<\/li>\n<\/ol>\n

    \u5728\u5408\u4f5c\u901a\u4fe1\u4e2d\uff0c\u901a\u4fe1\u53cc\u65b9\u4f9d\u636e\u4e8b\u5148\u65e2\u5b9a\u4f20\u8f93\u534f\u8bae\u8fdb\u884c\u901a\u4fe1\uff1b\u800c\u975e\u5408\u4f5c\u901a\u4fe1\u4e2d\uff0c\u901a\u4fe1\u4f20\u8f93\u4fe1\u606f\u7684\u6570\u636e\u8c03\u5236\u65b9\u5f0f\u4ee5\u53ca\u4fe1\u53f7\u7684\u7f16\u7801\u65b9\u5f0f\u7b49\u53c2\u6570\u5bf9\u63a5\u6536\u7aef\u662f\u672a\u77e5\u7684\uff0c\u9700\u8981\u5148\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5404\u79cd\u5408\u7406\u7684\u53c2\u6570\u4f30\u8ba1\uff0c\u518d\u5bf9\u4fe1\u53f7\u8fdb\u884c\u4e0b\u4e00\u6b65\u5206\u6790\u3002<\/p>\n

    \u5f53\u524d\u96f7\u8fbe\u7cfb\u7edf\u548c\u901a\u4fe1\u7cfb\u7edf\u7684\u81ea\u9002\u5e94\u7a0b\u5ea6\u8d8a\u6765\u8d8a\u9ad8\uff0c\u6240\u91c7\u7528\u7684\u6ce2\u5f62\u8d8a\u6765\u8d8a\u5148\u8fdb\uff0c\u8c03\u5236\u65b9\u5f0f\u4e5f\u8d8a\u6765\u8d8a\u590d\u6742\u3002\u540c\u65f6\uff0c\u7528\u9891\u8bbe\u5907\u6570\u91cf\u98de\u901f\u589e\u52a0\uff0c\u9891\u8c31\u53d8\u5f97\u8d8a\u6765\u8d8a\u62e5\u585e\u3002\u89e3\u51b3\u8c03\u5236\u65b9\u5f0f\u590d\u6742\uff0c\u7528\u9891\u8bbe\u5907\u589e\u591a\uff0c\u9891\u8c31\u62e5\u585e\u4e14\u7535\u78c1\u73af\u5883\u5e72\u6270\u589e\u52a0\u7b49\u56e0\u7d20\u7ed9\u975e\u5408\u4f5c\u4fe1\u53f7\u8bc6\u522b\u5904\u7406\u5e26\u6765\u7684\u95ee\u9898\u6709\u7740\u91cd\u8981\u610f\u4e49\u3002<\/p>\n

    \u76ee\u524d\uff0c\u56fd\u5185\u5916\u7814\u7a76\u4e3b\u8981\u9488\u5bf9\u5355\u8f7d\u6ce2\u3001\u6b63\u4ea4\u9891\u5206\u590d\u7528\uff08OFDM,orthogonal frequency division multiplexing\uff09\u4fe1\u53f7\u7684\u8bc6\u522b\uff0c\u5bf9OFDM\u6ce2\u5f62\u4f20\u8f93\u5b50\u8f7d\u6ce2\u95f4\u7684\u8c03\u5236\u8bc6\u522b\u7814\u7a76\u6587\u732e\u8f83\u5c11\u3002Karra\u7b49[1]\u8ba4\u4e3a\u53ef\u4ee5\u91c7\u7528\u80fd\u91cf\u68c0\u6d4b\u7684\u65b9\u6cd5\u6765\u5bf9 OFDM \u8fdb\u884c\u68c0\u6d4b\u3002\u5176\u601d\u8def\u662f\u5229\u7528\u5728\u9ad8\u65af\u767d\u566a\u58f0\u4fe1\u9053\u4e2d\u4fe1\u53f7\u566a\u58f0\u80fd\u91cf\u4e4b\u548c\u5927\u4e8e\u5355\u72ec\u7684\u767d\u566a\u58f0\u80fd\u91cf\uff0c\u8bbe\u7f6e\u5408\u9002\u7684\u95e8\u9650\u9608\u503c\u5c06\u4fe1\u53f7\u4ece\u8fd9\u79cd\u590d\u6742\u7684\u73af\u5883\u4e2d\u68c0\u6d4b\u51fa\u6765\u3002\u4f46\u5728\u5b9e\u9645\u901a\u4fe1\u73af\u5883\u4e2d\uff0c\u8981\u9009\u62e9\u5408\u9002\u7684\u95e8\u9650\u9608\u503c\u662f\u6781\u5176\u56f0\u96be\u7684\uff0c\u5c24\u5176\u662f\u5728\u590d\u6742\u7684\u5fae\u5f31\u7535\u78c1\u73af\u5883\u4e2d\uff0c\u566a\u58f0\u80fd\u91cf\u8fdc\u5927\u4e8e\u4fe1\u53f7\u7684\u80fd\u91cf\uff0c\u6216\u566a\u58f0\u4e3a\u975e\u5e73\u7a33\u65f6\uff0c\u4fe1\u53f7\u68c0\u6d4b\u7ed3\u679c\u4f1a\u6025\u5267\u6076\u5316\u3002<\/p>\n

    Dillard[2]\u8ba4\u4e3a\u96f7\u8fbe\u4e2d\u7684\u8109\u51b2\u68c0\u6d4b\u3001\u4e8c\u5143\u6ed1\u7a97\u6280\u672f\u4e0e\u80fd\u91cf\u68c0\u6d4b\u7b97\u6cd5\u53ef\u4ee5\u7ed3\u5408\u8d77\u6765\u505a\u4fe1\u53f7\u68c0\u6d4b\uff0c\u4f46\u6ca1\u6709\u4ece\u6839\u672c\u4e0a\u89e3\u51b3\u80fd\u91cf\u68c0\u6d4b\u95e8\u9650\u9608\u503c\u96be\u4ee5\u9009\u53d6\u7684\u95ee\u9898\u3002\u57fa\u4e8e\u6b64\uff0cKrasner[3]\u63d0\u51fa\u4e86\u7ed3\u5408\u7ecf\u5178\u68c0\u6d4b\u548c\u4f30\u8ba1\u7406\u8bba\u7684\u7b97\u6cd5\uff0c\u4f20\u8f93\u6570\u636e\u7684\u5404\u79cd\u4fe1\u606f\u90fd\u662f\u5df2\u77e5\u7684\uff0c\u5148\u5b58\u50a8\u5728\u63a5\u6536\u7aef\u7684\u5904\u7406\u5668\u4e2d\u3002<\/p>\n

    \u968f\u7740\u901a\u4fe1\u6280\u672f\u98de\u901f\u53d1\u5c55\uff0cOFDM\u4fe1\u53f7\u76f2\u68c0\u6d4b\u8d8a\u6765\u8d8a\u53d7\u5230\u4eba\u4eec\u7684\u5173\u6ce8\uff0cShi\u7b49[4]\u5bf9OFDM\u4e0e\u76f4\u63a5\u5e8f\u5217\u6269\u9891\uff08DS-SS,direct sequence spread spectrum\uff09\u4fe1\u53f7\u90fd\u5177\u6709\u7684\u8c31\u7ebf\u95f4\u9690\u542b\u5468\u671f\u6027\u7279\u5f81\u8fdb\u884c\u7814\u7a76\uff0c\u628a\u529f\u7387\u8c31\u4e8c\u6b21\u5904\u7406\u4ee5\u53ca\u5012\u8c31\u5206\u6790\u65b9\u6cd5\u4f5c\u4e3a OFDM \u68c0\u6d4b\u8bc6\u522b\u7684\u7b97\u6cd5\uff0c\u4f7f OFDM \u4fe1\u53f7\u80fd\u591f\u5728\u4fe1\u566a\u6bd4\uff08SNR,signal to noise ratio\uff09\u975e\u5e38\u4f4e\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u76f2\u68c0\u6d4b\u548c\u53c2\u6570\u7684\u76f2\u4f30\u8ba1\u3002<\/p>\n

    \u5728\u5b9e\u9645\u901a\u4fe1\u4e2d\uff0c\u5e38\u89c1\u4fe1\u53f7\u90fd\u662f\u5faa\u73af\u5e73\u7a33\u7684\uff0c\u56e0\u6b64\u5efa\u7acb\u5faa\u73af\u5e73\u7a33\u7684\u4fe1\u53f7\u6a21\u578b\u53ef\u4ee5\u6ee1\u8db3\u901a\u5e38\u60c5\u51b5\u4e0b\u7684\u7b97\u6cd5\u4eff\u771f\u3002Jaiswal \u7b49[5]\u63d0\u51fa\u4e00\u79cd\u5229\u7528\u8c31\u76f8\u5173\u5bf9\u4fe1\u53f7\u7684\u8c03\u5236\u65b9\u5f0f\u8fdb\u884c\u5206\u6790\u7684\u65b9\u6cd5\uff0c\u5f97\u5230\u4e0d\u540c\u8c03\u5236\u65b9\u5f0f\u4fe1\u53f7\u5404\u81ea\u7684\u5468\u671f\u7279\u5f81\u3002\u5728\u5df2\u6709\u7814\u7a76\u4e2d\uff0c\u4fe1\u53f7\u7684\u5faa\u73af\u5e73\u7a33\u6027\u7ecf\u5e38\u88ab\u7528\u6765\u8fdb\u884c\u4fe1\u53f7\u7684\u68c0\u6d4b\u3001\u53c2\u6570\u4f30\u8ba1\u3001\u8c03\u5236\u65b9\u5f0f\u8bc6\u522b\u3001\u4fe1\u9053\u4f30\u8ba1\u7b49\u76f2\u7814\u7a76[6]\uff0c\u57fa\u4e8e\u6b64\u7684OFDM\u4fe1\u53f7\u76f2\u5904\u7406[7]\u6280\u672f\u4e5f\u5728\u4e0d\u65ad\u8fdb\u6b65\u3002<\/p>\n

    \u4ece\u4fe1\u53f7\u7c7b\u522b\u4e0a\uff0c\u8c03\u5236\u8bc6\u522b\u5206\u4e3a\u7c7b\u95f4\u8bc6\u522b\u548c\u7c7b\u5185\u8bc6\u522b 2 \u79cd\uff0c\u7c7b\u95f4\u8bc6\u522b\u5305\u62ec\u591a\u8fdb\u5236\u6570\u5b57\u76f8\u4f4d\u8c03\u5236\uff08MPSK,multiple phase shift keying\uff09\u548c\u591a\u8fdb\u5236\u6b63\u4ea4\u5e45\u5ea6\u8c03\u5236\uff08MQAM,multiple quadrature amplitude modulation\uff09\u7b49\uff0c\u7c7b\u5185\u8bc6\u522b\u5305\u62ec16QAM\u548c64QAM\u7b49[8]\u3002\u5728\u76ee\u524d\u7684\u7814\u7a76\u4e2d\uff0c\u4ece\u8bc6\u522b\u7b97\u6cd5\u4e0a\uff0c\u8c03\u5236\u8bc6\u522b\u5206\u4e3a\u4e24\u5927\u7c7b\uff0c\u5373\u51b3\u7b56\u8bba\u8bc6\u522b\u548c\u6a21\u5f0f\u8bc6\u522b\u3002\u51b3\u7b56\u8bba\u8bc6\u522b\u901a\u5e38\u7528\u4e8e\u5728\u5f85\u8bc6\u522b\u4fe1\u53f7\u4e2d\u81f3\u5c11\u80fd\u8bc6\u522b\u51fa\u4e00\u79cd\u7684\u60c5\u5f62\uff0c\u5176\u601d\u60f3\u662f\u6839\u636e\u4fe1\u53f7\u80fd\u5426\u6ee1\u8db3\u5047\u8bbe\u7684\u6761\u4ef6\u6765\u8fdb\u884c\u8bc6\u522b\uff1b\u6a21\u5f0f\u8bc6\u522b\u662f\u6839\u636e\u7edf\u8ba1\u4fe1\u606f\u63d0\u53d6\u7279\u5f81\u91cf\u8fdb\u884c\u8bc6\u522b\u3002\u672c\u6587\u91c7\u7528\u6a21\u5f0f\u8bc6\u522b\u4e2d\u7684\u57fa\u4e8e\u9ad8\u9636\u7edf\u8ba1\u91cf\u7b97\u6cd5\u6765\u5b8c\u6210\u8c03\u5236\u8bc6\u522b\u3002<\/p>\n

    \u4f9d\u636e\u4e0d\u540c\u7684\u8c03\u5236\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5f97\u5230\u591a\u79cd\u4fe1\u53f7\u53c2\u6570\uff0c\u56e0\u6b64\u7814\u7a76\u8005\u63d0\u51fa\u4e86\u5404\u79cd\u7279\u5f81\u91cf\u7684\u6784\u9020\u65b9\u5f0f\uff0c\u4f8b\u5982\uff0c\u4fe1\u53f7\u77ac\u65f6\u53c2\u6570\u548c\u529f\u7387\u8c31\u7279\u5f81[9]\u3001\u4fe1\u53f7\u9ad8\u9636\u7edf\u8ba1\u91cf[10]\u3001\u5c0f\u6ce2\u53d8\u6362\u65b9\u6cd5[11]\u3001\u5206\u5f62\u7406\u8bba\u7b97\u6cd5\u3001\u4fe1\u53f7\u661f\u5ea7\u56fe\u6cd5\u7b49\u3002<\/p>\n

    \u672c\u6587\u4ee5\u975e\u5408\u4f5c OFDM \u8c03\u5236\u4fe1\u53f7\u53d1\u9001\u63a5\u6536\u4e3a\u80cc\u666f\uff0c\u5bf9\u4fe1\u53f7\u7684\u76f2\u68c0\u6d4b\u3001\u53c2\u6570\u76f2\u4f30\u8ba1\u3001\u5b50\u8f7d\u6ce2\u8c03\u5236\u8bc6\u522b\u8fdb\u884c\u7814\u7a76\u5206\u6790\u3002<\/p>\n

    2. OFDM\u4fe1\u53f7\u6a21\u578b<\/p>\n

    2.1 OFDM\u7cfb\u7edf\u7406\u8bba<\/p>\n

    \u7531\u6587\u732e[12,13,14]\u53ef\u77e5\uff0cOFDM\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u591a\u8f7d\u6ce2\u8c03\u5236\u6280\u672f\u3002OFDM\u57fa\u672c\u601d\u60f3\u662f\uff0c\u5c06\u4fe1\u9053\u5206\u6210\u82e5\u5e72\u6b63\u4ea4\u5b50\u4fe1\u9053\uff0c\u5c06\u4e32\u884c\u7684\u9ad8\u901f\u6570\u636e\u6d41\u4fe1\u53f7\u8f6c\u6362\u6210\u5e76\u884c\u7684\u4f4e\u901f\u5b50\u6570\u636e\u6d41\uff0c\u5e76\u8c03\u5236\u5230\u6bcf\u4e2a\u5b50\u4fe1\u9053\u4e0a\u8fdb\u884c\u4f20\u8f93\u3002OFDM\u7cfb\u7edf\u6846\u67b6\u5982\u56fe1\u6240\u793a\uff0c\u5728OFDM\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u6bcf\u4e2aOFDM\u7b26\u53f7\u7531\u8c03\u5236\u540e\u7684\u5b50\u8f7d\u6ce2\u8fdb\u884c\u76f8\u52a0\u800c\u6210\uff0c\u6bcf\u4e2a\u5b50\u8f7d\u6ce2\u90fd\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u8c03\u5236\u65b9\u5f0f\uff0c\u5982MPSK\u6216MQAM\u3002<\/p>\n

    OFDM\u7b26\u53f7\u53ef\u8868\u793a\u4e3a<\/p>\n<\/p>\n

    \n \"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa\n <\/div>\n

    \u5176\u4e2d\uff0ct\u4e3a\u65f6\u95f4\uff0cts\u4e3a\u8d77\u59cb\u65f6\u95f4\uff0cN\u4e3a\u5b50\u4fe1\u9053\u7684\u6570\u76ee\uff1bTc\u4e3a OFDM \u7b26\u53f7\u7684\u6301\u7eed\u65f6\u95f4\u957f\u5ea6\uff1bdi\u4e3a\u7b2c i\u4e2a\u5b50\u8f7d\u6ce2\u4e0a\u4f20\u8f93\u7684\u6570\u636e\u7b26\u53f7\uff1bfi\u4e3a\u7b2ci\u4e2a\u5b50\u8f7d\u6ce2\u4f7f\u7528\u7684\u9891\u7387\u70b9\uff0cfc\u4e3a\u8f7d\u9891\uff1brect(t)\u4e3a\u77e9\u5f62\u51fd\u6570\uff0crect(t)=1\uff0c|t|\u2264Tc2\/t\uff1bs(t)=0\uff0ct<ts\u6216t>Tc+ts\u3002<\/p>\n<\/p>\n

    \n \"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa\n <\/div>\n

    \u5404\u5b50\u8f7d\u6ce2\u76f8\u4e92\u6b63\u4ea4\uff0c\u5373<\/p>\n<\/p>\n

    \n \"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa\n <\/div>\n

    \u5bf9\u7b2ci\u4e2a\u5b50\u4fe1\u9053\u4e0a\u4f20\u8f93\u7684\u6570\u636e\u8fdb\u884c\u89e3\u8c03\uff0c\u5728\u6570\u636e\u6301\u7eed\u65f6\u95f4Tc\u5185\u79ef\u5206\uff0c\u5373<\/p>\n<\/p>\n

    \n \"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa\n <\/div>\n

    \u5404\u5b50\u4fe1\u9053\u9891\u7387\u70b9\u95f4\u6709\u82e5\u5e72\u6574\u6570\u500d\u5468\u671f\u5dee\uff0c\u56e0\u6b64\u5176\u4ed6\u5b50\u8f7d\u6ce2\u6b64\u65f6\u7684\u79ef\u5206\u503c\u4e3a\u96f6\u3002\u7531\u5f0f(3)\u53ef\u77e5\uff0c\u5982\u679c\u5bf9\u63a5\u6536\u4fe1\u53f7\u4e2d\u7684\u4efb\u4e00\u5b50\u8f7d\u6ce2\u4fe1\u53f7\u8fdb\u884c\u89e3\u8c03\uff0c\u5c31\u80fd\u6062\u590d\u539f\u5b50\u8f7d\u6ce2\u4fe1\u53f7\u3002<\/p>\n

    \u5728OFDM\u7cfb\u7edf\u4e2d\uff0c\u7531\u6570\u636e\u6301\u7eed\u65f6\u95f4\u957f\u5ea6Tc\u53ef\u5f97\u5b50\u4fe1\u9053\u7684\u5e26\u5bbd\u4e3a <\/p>\n

    \n \"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa \uff0c\u8fdb\u800c\u53ef\u77e5\u4e00\u4e2a OFDM \u7b26\u53f7\u7684\u5e26\u5bbd\u4e3a\n <\/div>\n
    \n \"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa \u3002\n <\/div>\n

    \u53e6\u5916\uff0c\u4ece\u9891\u57df\u89d2\u5ea6\u6765\u5bf9OFDM\u5b50\u8f7d\u6ce2\u95f4\u7684\u4f4d\u7f6e\u8fdb\u884c\u5206\u6790\uff0c\u5728\u7b26\u53f7\u6301\u7eed\u65f6\u95f4\u4e4b\u5185\uff0c\u5305\u62ec\u4e86\u8bb8\u591a\u5b50\u8f7d\u6ce2\uff0c\u56e0\u6b64\u5b83\u7684\u9891\u8c31\u53ef\u4ee5\u8ba4\u4e3a\u662f\u77e9\u5f62\u8109\u51b2\u4e0e\u8bb8\u591a\u4f4d\u4e8e\u5b50\u8f7d\u6ce2\u9891\u7387\u70b9\u4e0a\u7684\u03b4\u51fd\u6570\u5728\u9891\u57df\u7684\u5377\u79ef\u76f8\u52a0\u3002\u5df2\u77e5\u77e9\u5f62\u8109\u51b2\u9891\u8c31\u51fd\u6570\u4e3asinc(Tcf)\uff0c\u8be5\u51fd\u6570\u5728OFDM\u5468\u671f\u5012\u6570\u7684\u6574\u6570\u500d\u5904\u5747\u4e3a\u96f6\u3002\u7531\u6b64\u53ef\u77e5\uff0c\u5728\u6bcf\u4e00\u4e2a\u5b50\u9891\u7387\u70b9\u4e0a\u90fd\u6709\u4e00\u4e2a\u6700\u5927\u503c\uff0c\u800c\u5bf9\u5e94\u7684\u65f6\u523b\uff0c\u5176\u4ed6\u5b50\u4fe1\u9053\u4e0a\u7684\u9891\u8c31\u503c\u7b49\u4e8e\u96f6\uff0c\u5373\u6d88\u9664\u4e86\u7801\u95f4\u5e72\u6270\uff08ICI,inter-chip interference\uff09\u3002<\/p>\n

    \u4ee4s(t)\u4e2d\u7684ts=0\uff0c\u6b64\u65f6\u77e9\u5f62\u51fd\u6570\u53ef\u5f53\u4f5c\u4e0d\u5b58\u5728\uff0c\u5bf9s(t)\u4ee5 <\/p>\n

    \n <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa_\u4fe1\u53f7\u901a\u8fc7\u7406\u60f3\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u8f93\u51fa\u6765\u6e90\uff1a\u53f8\u6d77\u98de,\u80e1\u5174\u67f3,\u53f2\u9707et.al.\u57fa\u4e8e\u8054\u5408\u7279\u5f81\u53c2\u6570\u63d0\u53d6\u7684\u975e\u5408\u4f5c\u4fe1...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/7729"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=7729"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/7729\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=7729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=7729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=7729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}