{"id":2947,"date":"2020-01-14T02:39:38","date_gmt":"2020-01-14T02:39:38","guid":{"rendered":""},"modified":"2020-01-14T10:40:00","modified_gmt":"2020-01-14T02:40:00","slug":"%e9%80%9a%e4%bf%a1%e4%bf%a1%e9%81%93%e7%bb%bc%e5%90%88%e5%b8%83%e7%ba%bf%e4%b8%ad%e9%a2%91%e7%8e%87%e5%92%8c%e5%b8%a6%e5%ae%bd%e7%9a%84%e6%80%a7%e8%83%bd%e5%ae%9a%e7%ba%a7%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2947","title":{"rendered":"\u901a\u4fe1\u4fe1\u9053\u7efc\u5408\u5e03\u7ebf\u4e2d\u9891\u7387\u548c\u5e26\u5bbd\u7684\u6027\u80fd\u5b9a\u7ea7\u95ee\u9898"},"content":{"rendered":"

\n\t\u6211\u4eec\u6765\u4e86\u89e3\u901a\u4fe1\u4fe1\u9053\u4f20\u9001\u4fe1\u606f\u80fd\u529b\u80cc\u540e\u7684\u4e00\u4e9b\u539f\u7406\u4ee5\u53ca\u6570\u636e\u7f16\u7801\u6280\u672f\u3002\u7531\u4e8e\u6b64\u5904\u5c06\u4f1a\u8c08\u53ca\u4e00\u4e9b\u7406\u8bba\u4e0e\u6570\u5b66\u8ba1\u7b97\uff0c\u56e0\u6b64\u6211\u5c06\u5c3d\u53ef\u80fd\u5730\u907f\u514d\u590d\u6742\u7684\u6570\u5b66\u95ee\u9898\uff0c\u4f46\u4e5f\u4e0d\u53ef\u80fd\u5b8c\u5168\u5ffd\u7565\u3002<\/span><\/p>\n

\n\t\u4e00\u3001\u7f16\u7801\u6280\u672f\u5e94\u7528<\/p>\n

\n\t <\/div>\n

\n\t\u4e8b\u5b9e\u4e0a\uff0c\u9999\u519c\u516c\u5f0f\u65e9\u5df2\u6982\u62ec\u51fa\u5e26\u5bbdB\u548c\u901f\u7387C \u4e4b\u95f4\u7684\u5173\u7cfb\uff1aC=B*Log\uff081+SNR\uff09<\/p>\n

\n\t\u5f0f\u4e2dB\u4e3a\u4fe1\u9053\u5e26\u5bbd\uff0c\u6240\u8c13\u5e26\u5bbd\u662f\u6307\u80fd\u591f\u4ee5\u9002\u5f53\u4fdd\u771f\u5ea6\u4f20\u8f93\u4fe1\u53f7\u7684\u9891\u7387\u8303\u56f4\uff0c\u5176\u5355\u4f4d\u662fHz\uff0c\u5b83\u662f\u4fe1\u9053\u672c\u8eab\u56fa\u6709\u7684\uff0c\u4e0e\u6240\u8f7d\u4fe1\u53f7\u65e0\u5173\u3002SNR\u4e3a\u4fe1\u566a\u6bd4\uff0c\u5b83\u7531\u7cfb\u7edf\u7684\u53d1\u6536\u8bbe\u5907\u4ee5\u53ca\u4f20\u8f93\u7cfb\u7edf\u6240\u5904\u7684\u7535\u78c1\u73af\u5883\u5171\u540c\u51b3\u5b9a\u3002\u800c\u901f\u7387C\u662f\u4e00\u4e2a\u8ba1\u7b97\u7ed3\u679c\uff0c\u5b83\u7531B\u548cSNR\u5171\u540c\u51b3\u5b9a\uff0c\u5176\u5355\u4f4d\u4e3abps\uff0c\u5728\u6982\u5ff5\u4e0a\u8868\u5f81\u4e3a\u6bcf\u79d2\u4f20\u8f93\u7684\u4e8c\u8fdb\u5236\u4f4d\u6570\u3002<\/p>\n

\n\t\u53ef\u89c1\uff0c\u7ed9\u5b9a\u4fe1\u9053\uff0c\u5219\u5e26\u5bbdB\u4e5f\u968f\u4e4b\u7ed9\u5b9a\uff0c\u6539\u53d8\u4fe1\u566a\u6bd4SNR\u53ef\u5f97\u5230\u4e0d\u540c\u7684\u4f20\u8f93\u901f\u7387C \u3002MHz\u4e0eMbps\u6709\u7740\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u5373\u540c\u6837\u5e26\u5bbd\u53ef\u4ee5\u4f20\u8f93\u4e0d\u540c\u7684\u4f4d\u6d41\u901f\u7387\u3002\u540c\u65f6\uff0cMbps\u662f\u4f9d\u8d56\u4e8e\u5e94\u7528\u7684\uff1b\u800cMHz\u5219\u4e0e\u5e94\u7528\u65e0\u5173\u3002<\/p>\n

\n\t\u5982\u679c\u8981\u7ed9\u5b83\u6253\u4e00\u4e2a\u5f62\u8c61\u7684\u6bd4\u55bb\uff0c\u90a3\u4e48\u6c7d\u8f66\u65f6\u901f\u4e0e\u5f15\u64ce\u8f6c\u901f\u6070\u5230\u597d\u5904\u3002\u5f53\u7ed9\u5b9a\u65cb\u8f6c\u901f\u5ea6\uff0c\u5728\u9f7f\u8f6e\u5df2\u77e5\u7684\u60c5\u51b5\u4e0b\u53ef\u4ee5\u8ba1\u7b97\u51fa\u6c7d\u8f66\u7684\u901f\u5ea6\u3002\u5728\u8fd9\u4e2a\u7c7b\u6bd4\u5f53\u4e2d\uff0c\u9f7f\u8f6e\u8d77\u4e86\u4e00\u4e2a\u6865\u6881\u7684\u4f5c\u7528\u3002\u4e8b\u5b9e\u4e0a\uff0c\u9f7f\u8f6e\u4e4b\u4e8e\u6c7d\u8f66\u548c\u5f15\u64ce\u5c31\u5982\u7f16\u7801\u7cfb\u7edf\u4e4b\u4e8e\u901f\u7387\u548c\u5e26\u5bbd\u3002<\/p>\n

\n\t\u7f16\u7801\u662f\u4e3a\u8ba1\u7b97\u673a<\/u>\u8fdb\u884c\u4fe1\u606f\u4f20\u8f93\u800c\u88ab\u91c7\u7528\u7684\u3002\u901a\u8fc7\u5bf9\u4fe1\u606f\u8fdb\u884c\u7f16\u7801\uff0c\u8bb8\u591a\u6280\u672f\u4e0a\u7684\u95ee\u9898\uff0c\u6bd4\u5982\u540c\u6b65\u3001\u5e26\u5bbd\u53d7\u9650\u7b49\u90fd\u53ef\u4ee5\u5f97\u5230\u89e3\u51b3\u3002\u7f16\u7801\u5bf9\u4e8e\u4fe1\u606f\u7684\u53ef\u9760\u4f20\u8f93\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002<\/p>\n

\n\t\u76ee\u524d\u6709\u4e24\u79cd\u57fa\u672c\u7684\u7f16\u7801\u7cfb\u5217\u3002\u7b2c\u4e00\u79cd\u662f\u6bcfN\u4f4d\u6dfb\u52a0\u4e00\u4e2a\u540c\u6b65\u4f4d\uff0c\u4ee5\u4f7f\u540c\u6b65\u6210\u4e3a\u53ef\u80fd\uff08\u5982\u5f53N=1\u65f6\uff0c\u4e3aManchester\uff08\u66fc\u5f7b\u65af\u7279\uff09\u7f16\u7801\uff1b\u5f53N=4\u65f6 \uff0c\u4e3a4B5B\u7f16\u7801\uff09\uff0c\u4f46\u8fd9\u9700\u8981\u4e00\u4e2a\u6bd4\u539f\u6765\u66f4\u5927\u7684\u5e26\u5bbd\u3002\u800c\u4e14\u540c\u6b65\u4f4d\u8d8a\u591a\uff0c\u5e26\u5bbd\u9700\u8981\u8d8a\u5927\u3002\u4e3a\u4e86\u51cf\u5c0f\u5e26\u5bbd\uff0c\u91c7\u7528\u6bcf7\u4f4d\u6dfb\u52a0\u4e00\u4e2a\u540c\u6b65\u4f4d\uff08\u5373 7B8B\u7f16\u7801\uff09\u7684\u7f16\u7801\u7cfb\u7edf\u662f\u53ef\u80fd\u7684\uff0c\u4f46\u968f\u4e4b\u800c\u6765\u7684\u662f\uff0c\u5f53\u4f20\u8f93\u8f83\u957f\u4e00\u4e32\u76f8\u540c\u7c7b\u578b\u7684\u4f4d\u6d41\u65f6\uff0c\u540c\u6b65\u5c31\u53d8\u5f97\u975e\u5e38\u56f0\u96be\u4e86\u3002<\/p>\n

\n\t\u53e6\u4e00\u79cd\u7f16\u7801\u7cfb\u5217\u662f\u901a\u8fc7\u589e\u52a0\u7535\u5e73\u4e2a\u6570\u4ee5\u51cf\u5c0f\u5e26\u5bbd\uff0c\u7535\u5e73\u6570\u8d8a\u591a\uff0c\u5e26\u5bbd\u9700\u8981\u8d8a\u5c11\u3002\u7136\u800c\uff0c\u5f53\u4f20\u8f93\u4e00\u957f\u4e32\u75310 \u7f16\u7801\u540e\u5f97\u5230\u7684\u8fde\u7eed\u4fe1\u53f7\u65f6\uff0c\u540c\u6b65\u5c31\u53d8\u5f97\u51e0\u4e4e\u4e0d\u53ef\u80fd\u4e86\u3002\u5982\uff0c\u5f53\u6211\u4eec\u91c7\u75285\u4e2a\u7535\u5e73\u6570\u7684\u65f6\u5019\u5c31\u9700\u89814\u4e2a\u6bd4\u8f83\u5668<\/u>\uff0c\u800c\u4e14\u6bcf\u4e2a\u6bd4\u8f83\u5668\u90fd\u5e94\u8be5\u6709\u5176\u5408\u9002\u7684\u516c\u5dee\u8303\u56f4\u3002\u8fd9\u5c31\u662f\u8bf4\uff0c\u5f53\u6211\u4eec\u9009\u62e9\u7535\u5e73\u603b\u6570\u7684\u65f6\u5019\uff0c\u6211\u4eec\u8fd8\u5e94\u8be5\u628a\u4fe1\u566a\u6bd4\uff08SNR\uff09\u8003\u8651\u8fdb\u53bb\uff0c\u4ee5\u4fbf\u80fd\u8bc6\u522b\u8fd9\u51e0\u79cd\u4e0d\u540c\u7684\u7535\u5e73\u3002<\/p>\n

\n\tManchester\uff08\u66fc\u5f7b\u65af\u7279\uff09\u3001NRZ1\uff08\u4e0d\u5f52\u96f6\u7f16\u7801\uff09\u4ee5\u53caMLT-3\uff08\u4e09\u7535\u5e73\u53cc\u6781\u6027\uff09\u7f16\u7801\u662f\u76ee\u524d\u4e3b\u8981\u91c7\u7528\u7684\u4e09\u79cd\u7f16\u7801\u7cfb\u7edf\uff0c\u3002\u5b83\u4eec\u7684\u4f20\u8f93\u56e0\u5b50\u5206\u522b\u4e3a1\u30010.5\u548c0.25\u3002\u8fd9\u4e9b\u8f6c\u53d8\u56e0\u5b50\u53ef\u4ee5\u88ab\u5b9a\u4e49\u4e3aMHz\u5bf9\u7684\u6bd4\u7387\u3002\u7531\u6b64\u770b\u6765\uff0c\u4efb\u4f55\u4e00\u79cd\u7f16\u7801\u7cfb\u7edf\u90fd\u6709\u5176\u6280\u672f\u4e0a\u7684\u9650\u5236\u3002\u6b64\u5916\uff0c\u8fd8\u6709\u4e00\u4e9b\u53c2\u6570\u6bd4\u5982\u76f4\u6d41\u5143\u4ef6\u4e5f\u5bf9\u7f16\u7801\u63d0\u51fa\u67d0\u4e9b\u9650\u5236\uff0c\u5728\u5b9e\u9645\u5e94\u7528 \u4e2d\uff0c\u5f53\u524d\u4e3b\u8981\u51e0\u79cd\u7f16\u7801\u7cfb\u7edf\u90fd\u662f\u517c\u800c\u4f7f\u7528\u4ee5\u4fbf\u5bf9\u5e26\u5bbd\u4e0e\u540c\u6b65\u4f5c\u51fa\u6298\u8877\uff0c\u6216\u8005\u6709\u6240\u504f\u91cd\uff0c\u6bd4\u5982\uff0c\u4e00\u4e2a\u5bf9\u540c\u6b65\u8981\u6c42\u6bd4\u8f83\u9ad8\u7684\u5e94\u7528\u53ef\u4ee5\u9009\u62e9Manchester\u7f16\u7801\u7cfb\u7edf\u6216\u8005\u5176\u4ed6\u80fd\u591f\u4ea7\u751f\u65f6\u5e8f\u7684\u7f16\u7801\u65b9\u5f0f\u3002\u53c8\u5982\uff0c\u91c7\u7528MLT-3\u7f16\u7801\u7684100 Mbps\u5e94\u7528\uff0c\u9700\u898125 MHz\u7684\u5e26\u5bbd\uff1b\u5f53\u8054\u5408\u4f7f \u75284B5B\u7f16\u7801\u65b9\u5f0f\u65f6\uff0c\u7cfb\u7edf\u5c31\u9700\u589e\u52a0\u989d\u5916\u768425 Mbps \u5f00\u9500\uff0c\u6574\u4e2a\u7cfb\u7edf\u9700\u898131.25 MHz\u7684\u5e26\u5bbd\uff0c\u5176\u597d\u5904\u662f\u7cfb\u7edf\u5728\u540c\u6b65\u65b9\u9762\u53d8\u5f97\u66f4\u5bb9\u6613\u4e86\u3002 \u53e6\u5916\uff0c\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c100\u5feb\u901f\u4ee5\u592a\u7f51<\/u>\u4f7f\u7528\u7684\u662f5B6B\u7f16\u7801\u7cfb\u7edf\uff08IEEE802.13\uff09\uff0c\u8fd9\u53ef\u4ee5\u8bf4\u662f\u5bf9\u5e26\u5bbd\u4e0e\u540c\u6b65\u6298\u8877\u7684\u5178\u578b\u8303\u4f8b\u3002<\/p>\n

\n\t\u4e8c\u3001 \u57fa\u672c\u539f\u7406<\/p>\n

\n\t\u7b80\u5355\u5730\u8bf4\uff0c\u5c40\u57df\u7f51\u4e0a\u7684\u6570\u636e\u901a\u4fe1<\/u>\u662f\u901a\u8fc7\u4ece\u53d1\u5c04\u5668\u53d1\u51fa\u4e00\u7cfb\u5217“1 \u548c“0”\u7801\u5230\u63a5\u6536\u5668\u6765\u5b9e\u73b0\u7684\u3002\u4e8c\u8fdb\u5236\u6570\u636e\u901a\u5e38\u4ee5\u65b9\u6ce2\u6765\u8868\u793a\uff08\u56fe1\uff09\u3002<\/p>\n

\n\t\"\u7efc\u5408\u5e03\u7ebf\u7cfb\u7edf\u7684\u6027\u80fd\u5b9a\u7ea7\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848\"<\/p>\n

\n\t\u7136\u800c\u53cc\u7ede\u7ebf\u4e0a\u4f20\u8f93\u7684\u5e76\u4e0d\u662f\u4e00\u4e2a\u7eaf\u6b63\u7684\u65b9\u6ce2\u3002\u4e8c\u8fdb\u5236\u6570\u636e\u5b9e\u8d28\u4e0a\u662f\u4e00\u79cd\u91cd\u590d\u5f62\u5f0f\uff08\u5728\u67d0\u4e00\u70b9\u4e0a\uff09\u3002\u91cd\u590d\u5f62\u5f0f101010\u8868\u793a\u6700\u574f\u60c5\u51b5\u7684\u6a21\u578b\u3002\u5085\u91cc\u53f6\u53d8\u6362\u8868\u660e\uff3b\u6ce8\uff1a\u5085\u91cc\u53f6\u53d8\u6362\u5728\u7269\u7406\u5b66\u3001\u6570\u8bba\u3001\u7ec4\u5408\u6570\u5b66\u3001\u4fe1\u53f7\u5904\u7406\u3001\u6982\u7387\u8bba\u3001\u7edf\u8ba1\u5b66\u3001\u5bc6\u7801\u5b66\u3001\u58f0\u5b66\u3001\u5149\u5b66<\/u>\u3001\u6d77\u6d0b\u5b66\u3001\u7ed3\u6784\u52a8\u529b\u5b66\u7b49\u9886\u57df\u90fd\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\uff08\u4f8b\u5982\u5728\u4fe1\u53f7\u5904\u7406\u4e2d\uff0c\u5085\u91cc\u53f6\u53d8\u6362\u7684\u5178\u578b\u7528\u9014\u662f\u5c06\u4fe1\u53f7\u5206\u89e3\u6210\u5e45\u503c\u5206\u91cf\u548c\u9891\u7387\u5206\u91cf\uff09\u3002\uff3d\uff0c\u8fd9\u79cd\u6700\u574f\u60c5\u51b5\u7684\u91cd\u590d\u5f62\u5f0f\u786e\u5b9e\u7531\u6709\u9650\u7684\u4e00\u7cfb\u5217\u6b63\u5f26\u9891\u7387\u7ec4\u4ef6\uff08\u6b63\u5f26\u6ce2\uff09\u7ec4\u6210\uff0c\u5b83\u4eec\u53ef\u4ee5\u5206\u4e3a\u57fa\u9891\u548c\u5927\u91cf\u7684\u8c10\u6ce2\uff08\u82e5\u5e72\u4e2a\u57fa\u9891\uff09\u3002\u8fd9\u5c31\u6709\u70b9\u50cf\u5706\u662f\u7531\u6709\u9650\u4e2a\u5f88\u77ed\u7684\u76f4\u7ebf\u7ec4\u6210\u7684\u3002\u57fa\u9891\u662f\u6b63\u5f26\u6ce2\uff0c\u5176\u5468\u671f\u7b49\u4e8e\u6bd4\u7279\u65f6\u95f4\u7684\u4e24\u500d\u3002\u8fd9\u4e9b\u542c\u8d77\u6765\u975e\u5e38\u590d\u6742\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u4e00\u4e2a\u7b80\u5316\u7684\u4f8b\u5b50\u66f4\u597d\u5730\u8fdb\u884c\u89e3\u91ca\uff1a\u6bd4\u7279\u65f6\u95f4\uff1d 1\uff0f\u6bd4\u7279\u7387<\/p>\n

\n\t\u56e0\u6b64\uff0c\u5982\u679c101010 \u5f62\u5f0f\u662f10Mbps \u6570\u636e\u6d41\u7684\u90e8\u5206\uff0c\u6211\u4eec\u6bcf\u79d2\u949f\u5c31\u670910\uff0c000\uff0c000 \u6bd4\u7279\u3002\u6bcf\u4e2a\u6bd4\u7279\u5360\u6709\u5343\u4e07\u5206\u4e4b\u4e00\u79d2\u3002\u57fa\u9891\u7684\u5468\u671f\u662f\u6bd4\u7279\u65f6\u95f4\u7684\u4e24\u500d\uff08\u89c1\u56fe1\uff09\uff0c\u5373\u5343\u4e07\u5206\u4e4b\u4e8c\u79d2\u3002\u57fa\u9891\uff1d 1\uff0f\u5468\u671f\uff1d 5\uff0c000\uff0c000 Hz \uff1d 5 MHz \uff08Hz \uff1d \u5468\uff0f\u79d2\uff09\u3002<\/p>\n

\n\t\u4e3a\u4e86\u5f97\u5230\u5408\u7406\u7684\u65b9\u6ce2\uff0c\u5fc5\u987b\u7531\u8c10\u6ce2\uff08\u4ec5\u5728\u4e0a\u8ff0\u65b9\u6ce2\u60c5\u51b5\u4e0b\u4e3a\u5947\u8c10\u6ce2\uff09\u6765\u5bf9\u57fa\u9891\u8fdb\u884c\u8865\u5145\u3002\u4e3a\u4e86\u5f97\u5230\u5b8c\u7f8e\u7684\u65b9\u6ce2\uff0c\u8fd8\u5fc5\u987b\u6709\u6709\u9650\u6570\u91cf\u7684\u8fd9\u79cd\u8c10\u6ce2\u3002\u7531\u4e8e\u6709\u6e90\u8bbe\u5907\u5904\u7406\u65b9\u6ce2\u7684\u8fd1\u4f3c\u503c\u5f88\u5408\u7406\uff0c\u56e0\u6b64\u57fa\u9891\u52a0\u4e0a\u7b2c\u4e09\u8c10\u6ce2\u548c\u7b2c\u4e94\u8c10\u6ce2\uff08\u6216\u662f\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u57fa\u9891\u52a0\u4e0a\u7b2c\u4e09\u8c10\u6ce2\uff09\u5c31\u8db3\u591f\u4e86\u3002<\/p>\n

\n\t\"\u7efc\u5408\u5e03\u7ebf\u7cfb\u7edf\u7684\u6027\u80fd\u5b9a\u7ea7\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848\"<\/p>\n

\n\t\u56fe2 \u4e2d\u6240\u80fd\u770b\u5230\u7684\u6ce2\u5f62\u603b\u548c\uff0c\u662f“0”“1”\u5e8f\u5217\u6bd4\u8f83\u76f8\u8fd1\u7684\u8868\u793a\u3002\u4e32\u6270\u548c\u8870\u51cf\u7684\u5f71\u54cd\u5f80\u5f80\u4e5f\u4f1a\u5f71\u54cd\u6ce2\u5f62\u3002\u8fd9\u5c31\u5f00\u59cb\u89e3\u91ca\u4e3a\u4ec0\u4e48\u6bcf\u79d210Mbps\u768410Base-T\u9700\u8981\u4e09\u7c7b\u5e03\u7ebf<\/u>16MHz\u7684\u5e26\u5bbd\uff0c5MHz\u57fa\u9891\u52a0\u4e0a15 MHz\u7b2c\u4e09\u8c10\u6ce2\u3002<\/p>\n

\n\t\u4e09\u3001\u5b9e\u9645\u5e94\u7528<\/p>\n

\n\t\u901a\u4fe1\u7cfb\u7edf\u7684\u5e26\u5bbd\u8868\u793a\u4e86\u5176\u4f20\u8f93\u8fd9\u4e9b\u4e0d\u540c\u9891\u7387\u7ec4\u4ef6\u7684\u80fd\u529b\u3002\u5728\u7ed3\u6784\u5316\u5e03\u7ebf\u7cfb\u7edf\u4e2d\u5e26\u5bbd\u7684\u5355\u4f4d\u901a\u5e38\u4ee5MHz \u8868\u793a\u3002\u8d85\u4e94\u7c7b\u5e03\u7ebf\u7684\u5e26\u5bbd\u540d\u4e49\u4e0a\u67091 0 0MHz\u3002\u5047\u8bbe\u5e94\u7528\u4e00\u4e2a\u7b80\u5355\u7684\u4e8c\u8fdb\u5236\u4f20\u8f93“\u7801”\uff0c\u90a3\u4e48\u5728\u7406\u8bba\u4e0a\uff0c\u53ef\u4ee5\u7531Nyquist\uff08\u5948\u594e\u65af\u7279\uff09\u7b49\u5f0f\u6765\u8ba1\u7b97\u6700\u5927\u7684\u4fe1\u606f\u4f20\u8f93\u7387\uff1aC= 2 W Log 2 M<\/p>\n

\n\t\u5176\u4e2d\uff0cW \u4e3a\u5e26\u5bbd\uff08\u5355\u4f4d\uff1aH z \uff09\uff0cM \u4e3a\u4fe1\u4ee4\u5355\u5143\u7684\u6570\u91cf\uff0c\u5f53M=2\u65f6\uff0c C= 2 W\u3002<\/p>\n

\n\t\u8fd9\u5c31\u5f97\u51fa\u7406\u8bba\u4fe1\u606f\u5bb9\u91cf\u4e3a\u6bcf\u79d22x108 \u6bd4\u7279\uff0c\u5373200Mbps\u3002\u5b9e\u9645\u4e0a\uff0c\u7531\u4e8e\u4e32\u6270\u548c\u8870\u51cf\u7684\u5f71\u54cd\u8fd9\u4e2a\u503c\u4f1a\u6709\u6240\u51cf\u5c11\u3002<\/p>\n

\n\t\u90a3\u4e48\uff0c\u8d85\u4e94\u7c7b\u4fe1\u606f\u9053\u652f\u6301\u6570\u636e\u4f20\u8f93\u8fbe\u5230\u5343\u5146\u4f4d\u4ee5\u592a\u7f51\uff081 0 0 0Mbps\uff09\uff0c\u5982\u4f55\u8ba9\u5e26\u5bbd\u9002\u5408\u4e8e\u5b83\u5462\uff1f\u90a3\u5c31\u5f97\u589e\u52a0\u6570\u636e\u4f20\u8f93\u7387\uff0c\u589e\u52a0\u6570\u636e\u541e\u5410\u91cf\u7684\u5173\u952e\uff0c\u662f\u5bf9\u6bcf\u4e2a\u4fe1\u4ee4\u5355\u5143\u5f15\u5165\u591a\u4e8e1 \u6bd4\u7279\u3002\u5546\u4e1a\u8fd0\u7528\u4e2d\u5927\u90e8\u5206\u516c\u5171\u534f\u8bae\u90fd\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u7528\u5230\u4e86\u8fd9\u79cd\u6280\u672f\uff0c\u6211\u4eec\u79f0\u4e4b\u4e3a\u6570\u636e\u7f16\u7801\u3002<\/p>\n

\n\t\u5927\u90e8\u5206\u6570\u636e\u7f16\u7801\u7c7b\u578b\u90fd\u5229\u7528mBnL\u7f16\u7801\u6765\u5b9e\u73b0\uff0c\u4e5f\u5c31\u662f\u7531L\u4e2a\u7535\u5e73\u6bcf\u4e2a\u7535\u5e73n\u4e2a\u8109\u51b2\u6765\u8868\u793am\u6bd4\u7279\u7684\u5e8f\u5217\u3002\u4f7f\u7528\u5b9e\u4f8b\u5982ISDN \u548c\u5feb\u901f\u4ee5\u592a\u7f51\u3002\u4ee5100Base-T4 \u4e3a\u4f8b\u3002100 Mbps\u4fe1\u53f7\u5206\u6210\u4e09\u7ebf\u5bf9\u8fdb\u884c\u4f20\u8f93\u3002\u6bcf\u7ebf\u5bf9\u7684\u6bd4\u7279\u7387\u4e3a33.33 Mbps\u3002\u4e3a\u4e86\u51cf\u5c11\u8be5\u6bd4\u7279\u6d41\u7684\u9891\u7387\u5bb9\u91cf\u4ee5\u53ca\u5e03\u7ebf\u7cfb\u7edf\u7684\u5e26\u5bbd\u9700\u6c42\uff0c\u5c31\u8981\u8fd0\u7528\u4e09\u91cd\u4ee3\u7801\u3002\u5728\u4f20\u8f93\u5404\u7ec48 \u6bd4\u7279\u6570\u636e\u4e4b\u524d\uff0c\u8f6c\u6362\u4e3a6 \u4e2a\u4e09\u91cd\u7b26\u53f7\uff08\u89c1\u56fe3 \uff09\u3002<\/p>\n

\n\t\"\u7efc\u5408\u5e03\u7ebf\u7cfb\u7edf\u7684\u6027\u80fd\u5b9a\u7ea7\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848\"<\/p>\n

\n\t\u8fd9\u5c31\u628a\u53d1\u9001\u4fe1\u53f7\u7cfb\u7edf\u7684\u6709\u6548\u65f6\u949f<\/u>\u901f\u7387\u51cf\u5c11\u81f32 5 M H z\uff0c\u8fd9\u6837\uff08\u5728\u6211\u4eec\u6240\u8ff0\u7684\u7b2c\u4e00\u4e2a\u4f8b\u5b50\u4e2d\uff09\u57fa\u9891\u51cf\u5c11\u81f312.5 MHz\u3002\u8fd9\u5141\u8bb8\u4e09\u7c7b\u5e03\u7ebf\u7cfb\u7edf\u4e2d\u63d0\u4f9b\u7684\u5e26\u5bbd\u5185\u4f20\u8f93\u7387\u4e3a100 Mbps\u3002<\/p>\n

\n\t\u5343\u5146\u4f4d\u4ee5\u592a\u7f51\u91c7\u7528\u4e86\u4e00\u79cd\u4e0d\u540c\u7684\u65b9\u6848\uff0c\u5b83\u628a\u5404\u7ec48 \u6bd4\u7279\uff088 B\uff09\u6570\u636e\u8f6c\u6362\u4e3a\u7a7f\u8fc7\u56db\u6839\u53cc\u7ede\u7ebf\u7684\u56db\u4e2a\u4e94\u91cd\u7b26\u53f7\uff081 Q 4\uff09\u7684\u4f20\u8f93\uff0c \u6bcf\u4e2a\u7b26\u53f7\u4ee3\u8868\u4e24\u4e2a\u4e8c\u8fdb\u5236\u6bd4\u7279\u6216\u96f6\u3002\u5373\u4f7f\u7528PAM-5\u7f16\u7801\uff0c\u5b83\u4f7f\u7528-2\uff0c-1\uff0c0\uff0c1\uff0c2\u4e94\u79cd\u7535\u5e73\uff0c\u5176\u4e2d\u56db\u4e2a\u7535\u5e73\u7528\u6237\u4fe1\u53f7\u7f16\u7801\uff0c\u4e00\u4e2a\u7535\u5e73\u7528\u4e8e\u5411\u524d\u7ea0\u9519\u7f16\u7801\u3002\u4e94\u7ea7PAM\u7f16\u7801\u76f8\u5bf9\u4e8e\u4e8c\u8fdb\u5236\u7f16\u7801\u5c06\u4fe1\u9053\u5229\u7528\u7387\u63d0\u9ad8\u4e86\u4e00\u500d\uff0c\u8fd9\u6837\u6bcf\u7ebf\u5bf9\u7684\u4fe1\u53f7\u6ce2\u7279\u7387\u4e0b\u964d\u4e3a125MB\/s\uff0c\u5219\u57fa\u5e26\u5c06\u4e3a62.5MHz\uff0c\u518d\u4e00\u6b21\u964d\u4f4e\u4e86\u4fe1\u53f7\u6240\u5360\u7528\u7684\u5e26\u5bbd\u3002\u8fd9\u6837\u786e\u4fdd\u8d85\u4e94\u7c7b\u7cfb\u7edf\u6ee1\u8db3\u5e26\u5bbd\u9700\u6c42\u3002<\/p>\n

\n\t\u56db\u3001\u7ed3\u8bba<\/p>\n

\n\t\u5404\u4e2a\u5e94\u7528\u7684\u6bd4\u7279\u7387\u4e0e\u5176\u57fa\u9891\u6709\u5173\u3002\u6700\u9ad8\u7684\u9891\u7387\u5bb9\u91cf\u662f\u57fa\u9891\u7684\u8c10\u6ce2\u3002\u4e0d\u5e94\u628a\u5b83\u4e0e\u65f6\u949f\u9891\u7387\u76f8\u6df7\u6dc6\uff08\u6bd4\u7279\u6d41\u4ee5\u65f6\u949f\u9891\u7387\u53d6\u6837\uff09\u3002\u4f8b\u5982\uff0c10Base-T \u7684\u6bd4\u7279\u7387\u4e3a10Mbps\uff0c\u91c7\u6837\u65f6\u949f\u4e3a10MHz\uff0c\u4f46\u662f\u57fa\u9891\u4ec5\u4e3a5 MHz\u3002\u901a\u8fc7\u4ee5MHz \u8868\u793a\u7cfb\u7edf\u6027\u80fd\u9700\u6c42\uff0c\u6807\u51c6\u63d0\u4f9b\u4e86\u4e00\u4e2a\u84dd\u56fe\uff0c\u6709\u6e90\u7f51\u7edc\u7ec4\u4ef6\u8bbe\u8ba1\u4eba\u5458\u90fd\u53ef\u4ee5\u6839\u636e\u5b83\u6765\u8bbe\u8ba1\u4ed6\u4eec\u7684\u8bbe\u5907\u3002\u63d0\u4f9b\u7684\u5e03\u7ebf\u7cfb\u7edf\u548c\u6709\u6e90\u8bbe\u5907\u90fd\u6ee1\u8db3\u76f8\u5173\u6807\u51c6\u7684\u6027\u80fd\u9700\u6c42\uff0c\u90a3\u4e48\u6240\u6709\u7684\u4e00\u5207\u90fd\u6b63\u5e38\u8fd0\u8f6c\u8d77\u6765\uff01\u4f5c\u4e3a\u7528\u6237\uff0c\u6700\u611f\u5174\u8da3\u7684\u662f\u901a\u4fe1\u901f\u7387\u3002\u901f\u7387\u662f\u4ece\u5e94\u7528\u5c42\u6b21\u5bf9\u901a\u4fe1\u4f5c\u51fa\u63cf\u8ff0\u7684\u3002\u4e3a\u63d0\u9ad8\u901a<\/u>\u4fe1\u901f\u7387\uff0c\u6709\u4e24\u4e2a\u9014\u5f84\u53ef\u4ee5\u8003\u8651\uff1a\u4e00\u4e2a\u662f\u63d0 \u9ad8\u7ebf\u7f06\u7cfb\u7edf\u7684\u4f20\u8f93\u6027\u80fd\uff0c\u7531\u6b64\u51b3\u5b9a\u4e86\u5e26\u5bbd\uff1b\u53e6\u4e00\u4e2a\u662f\u9009\u62e9\u5408\u9002\u7684\u7f16\u7801\u7cfb\u7edf\uff0c\u4ece\u800c\u51b3\u5b9a\u4e86\u8f6c\u6362\u56e0\u5b50\u3002 \u5c3d\u7ba1\u5e26\u5bbd\u5728\u7269\u7406\u4e0a\u53d7\u5230\u9650\u5236\uff0c\u4f46\u662f\u901a\u8fc7\u5408\u9002\u7684\u7f16\u7801\u7cfb\u7edf\u53ef\u4ee5\u83b7\u5f97\u66f4\u9ad8\u7684\u901a\u4fe1\u901f\u7387\u3002\u5c24\u5176\u9700\u8981\u6307\u51fa\u7684\u662f\uff0c\u7f16\u7801\u7cfb\u7edf\u662f\u4f9d\u8d56\u4e8e\u5e94\u7528\u7684\uff0c\u8fd9\u610f\u5473\u7740\u4e00\u4e2a\u5177\u6709\u76f8\u540c\u4f4d\u6d41\u901f\u7387\u4f46\u91c7\u7528\u4e0d\u540c\u7f16\u7801\u65b9\u5f0f\u7684\u65b0\u5e94\u7528\uff0c\u5e76\u4e0d\u4e00\u5b9a\u80fd\u5f97\u5230\u539f\u7cfb\u7edf\u7684\u652f\u6301\uff0c\u6240\u4ee5\u5728\u8bbe\u8ba1\u7684\u65f6\u5019\uff0c\u5982\u679c\u4ec5\u4ec5\u8003\u8651\u90a3\u4e9b\u652f\u6301\u76ee\u524d\u5df2\u6709\u5e94\u7528\u7cfb\u7edf\u7684\u5e03\u7ebf\u7ec4\u4ef6\uff0c\u5e76\u4e14\u9009\u62e9\u4f4d\u6d41\u901f\u7387MHz\u6765\u63cf\u8ff0\u7684\u8bdd\uff0c\u90a3\u4e48\u8fd9\u5c06\u5bfc\u81f4\u4e25\u91cd\u9519\u8bef\u7684\u51b3\u7b56\u3002\u4ece\u8fd9\u4e2a\u89d2\u5ea6\u6765\u8bf4\uff0c\u4efb\u4f55\u4e00\u4e2a\u5f00\u653e\u7cfb\u7edf\u90fd\u5e94\u8be5\u72ec\u7acb\u4e8e\u5e94\u7528\u3002\u800c\u4e14\u53ea\u6709\u4f7f\u7528MHz\u6765\u63cf\u8ff0\u901a\u4fe1\u901f\u7387\uff0c\u6211\u4eec\u624d\u80fd\u4ece\u5f53\u524d\u4ee5\u53ca\u672a\u6765\u5e7f\u9614\u5e94\u7528\u9886\u57df\u4e4b\u4e2d\u4f5c\u51fa\u5145\u5206\u7684\u9009\u62e9\u3002\u5bf9\u4e8e\u7efc\u5408\u5e03\u7ebf\u7cfb\u7edf\u7684\u6027\u80fd\u5b9a\u7ea7\u95ee\u9898\uff0c\u6211\u4eec\u53ea\u80fd\u7528\u5e26\u5bbd\u800c\u4e0d\u80fd\u7528\u901f\u7387\u8fdb\u884c\u8861\u91cf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6211\u4eec\u6765\u4e86\u89e3\u901a\u4fe1\u4fe1\u9053\u4f20\u9001\u4fe1\u606f\u80fd\u529b\u80cc\u540e\u7684\u4e00\u4e9b\u539f\u7406\u4ee5\u53ca\u6570\u636e\u7f16\u7801\u6280\u672f\u3002\u7531\u4e8e\u6b64\u5904\u5c06\u4f1a\u8c08\u53ca\u4e00\u4e9b\u7406\u8bba\u4e0e\u6570\u5b66\u8ba1\u7b97\uff0c\u56e0\u6b64\u6211\u5c06\u5c3d\u53ef\u80fd\u5730\u907f\u514d\u590d\u6742\u7684\u6570\u5b66\u95ee\u9898\uff0c\u4f46\u4e5f\u4e0d\u53ef\u80fd\u5b8c\u5168\u5ffd\u7565\u3002 \u4e00\u3001\u7f16\u7801<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/2947"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2947"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/2947\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2947"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}