{"id":5235,"date":"2026-01-15T21:42:22","date_gmt":"2026-01-15T12:42:22","guid":{"rendered":"https:\/\/eternalsphere.net\/echoes\/?p=5235"},"modified":"2026-06-06T06:50:15","modified_gmt":"2026-06-05T21:50:15","slug":"j9z9hwz6khmzvx1","status":"publish","type":"post","link":"https:\/\/eternalsphere.net\/echoes\/index.php\/2026\/01\/15\/j9z9hwz6khmzvx1\/","title":{"rendered":"\u9999\u519c\u5b9a\u7406\uff1a\u65e0\u7ebf\u901a\u4fe1\u771f\u6b63\u7684\u7269\u7406\u6781\u9650"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728\u65e5\u5e38\u751f\u6d3b\u4e2d\uff0c\u4eba\u4eec\u4e60\u60ef\u7528\u201c\u4fe1\u53f7\u5f3a\u4e0d\u5f3a\u201d\u201c\u9891\u7387\u9ad8\u4e0d\u9ad8\u201d\u6765\u89e3\u91ca\u7f51\u7edc\u901f\u5ea6\u5feb\u6162\u3002\u4f46\u5728\u4fe1\u606f\u8bba\u4e2d\uff0c\u901a\u4fe1\u7684\u6781\u9650\u5e76\u4e0d\u7531\u8fd9\u4e9b\u76f4\u89c9\u56e0\u7d20\u51b3\u5b9a\uff0c\u800c\u662f\u7531\u4e00\u4e2a\u4e25\u8c28\u7684\u6570\u5b66\u5b9a\u5f8b\u652f\u914d\uff0c\u8fd9\u5c31\u662f<strong>\u9999\u519c\u5b9a\u7406\uff08Shannon\u2013Hartley Theorem\uff09<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e00\u5b9a\u7406\u5960\u5b9a\u4e86\u6574\u4e2a\u73b0\u4ee3\u901a\u4fe1\u5de5\u7a0b\u7684\u7406\u8bba\u57fa\u7840\uff0cWi-Fi\u30014G\u30015G\u3001\u5149\u7ea4\u901a\u4fe1\u4e43\u81f3\u536b\u661f\u901a\u4fe1\uff0c\u5168\u90e8\u8fd0\u884c\u5728\u5b83\u6240\u7ed9\u51fa\u7684\u7269\u7406\u4e0a\u9650\u4e4b\u4e0b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u9999\u519c\u5b9a\u7406\u8bf4\u4e86\u4ec0\u4e48\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9999\u519c\u5b9a\u7406\u7528\u4e00\u4e2a\u6781\u5176\u7b80\u6d01\u7684\u516c\u5f0f\u63cf\u8ff0\u4e86<strong>\u6709\u566a\u58f0\u4fe1\u9053\u4e2d\u53ef\u4f20\u8f93\u4fe1\u606f\u7684\u6700\u5927\u901f\u7387<\/strong>\uff1a<math display=\"block\"><semantics><mrow><mi>C<\/mi><mo>=<\/mo><mi>B<\/mi><msub><mrow><mi>log<\/mi><mo>\u2061<\/mo><\/mrow><mn>2<\/mn><\/msub><mo stretchy=\"false\">(<\/mo><mn>1<\/mn><mo>+<\/mo><mrow><mi mathvariant=\"normal\">S<\/mi><mi mathvariant=\"normal\">N<\/mi><mi mathvariant=\"normal\">R<\/mi><\/mrow><mo stretchy=\"false\">)<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">C = B \\log_2(1 + \\mathrm{SNR})<\/annotation><\/semantics><\/math>C=Blog2\u200b(1+SNR)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><math><semantics><mrow><mi>C<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">C<\/annotation><\/semantics><\/math>C\uff1a\u6700\u5927\u53ef\u8fbe\u7684\u4fe1\u606f\u901f\u7387\uff08bit\/s\uff09<\/li>\n\n\n\n<li><math><semantics><mrow><mi>B<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">B<\/annotation><\/semantics><\/math>B\uff1a\u4fe1\u9053\u5e26\u5bbd\uff08Hz\uff09<\/li>\n\n\n\n<li><math><semantics><mrow><mi mathvariant=\"normal\">S<\/mi><mi mathvariant=\"normal\">N<\/mi><mi mathvariant=\"normal\">R<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">\\mathrm{SNR}<\/annotation><\/semantics><\/math>SNR\uff1a\u4fe1\u566a\u6bd4\uff08Signal-to-Noise Ratio\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b83\u8868\u8fbe\u7684\u6838\u5fc3\u601d\u60f3\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728\u5b58\u5728\u566a\u58f0\u7684\u60c5\u51b5\u4e0b\uff0c\u4efb\u4f55\u901a\u4fe1\u7cfb\u7edf\u7684\u6700\u5927\u901f\u5ea6\uff0c\u53ea\u7531\u5e26\u5bbd\u548c\u4fe1\u566a\u6bd4\u51b3\u5b9a\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e0\u8bba\u4f7f\u7528\u591a\u590d\u6742\u7684\u8c03\u5236\u3001\u591a\u5148\u8fdb\u7684\u7b97\u6cd5\uff0c\u90fd\u65e0\u6cd5\u7a81\u7834\u8fd9\u4e2a\u4e0a\u9650\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u9891\u7387\u4e0d\u662f\u901f\u5ea6\uff0c\u5e26\u5bbd\u624d\u662f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f88\u591a\u4eba\u4f1a\u8bef\u4ee5\u4e3a\u201c\u9891\u7387\u8d8a\u9ad8\uff0c\u7f51\u901f\u8d8a\u5feb\u201d\u3002\u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u8bef\u89e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u4fe1\u7cfb\u7edf\u5e76\u4e0d\u662f\u7528\u67d0\u4e00\u4e2a\u9891\u7387\u4f20\u4fe1\u606f\uff0c\u800c\u662f\u7528<strong>\u4e00\u6bb5\u8fde\u7eed\u7684\u9891\u7387\u8303\u56f4<\/strong>\u6765\u627f\u8f7d\u4fe1\u53f7\uff0c\u8fd9\u4e2a\u8303\u56f4\u5c31\u662f<strong>\u5e26\u5bbd B<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2.4 GHz Wi-Fi \u4f7f\u7528\u7684\u662f 2.400\u20132.483 GHz \u7684\u9891\u8c31<\/li>\n\n\n\n<li>5 GHz Wi-Fi \u4f7f\u7528\u7684\u662f 5.150\u20135.825 GHz \u7684\u4e00\u90e8\u5206<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u771f\u6b63\u51b3\u5b9a\u6570\u636e\u541e\u5410\u80fd\u529b\u7684\u4e0d\u662f\u201c\u4e2d\u5fc3\u9891\u7387\u201d\uff0c\u800c\u662f<strong>\u8fd9\u4e00\u6bb5\u9891\u8c31\u7684\u5bbd\u5ea6<\/strong>\u3002<br>\u5728\u9999\u519c\u5b9a\u7406\u4e2d\uff0c\u8fd9\u6b63\u662f <math><semantics><mrow><mi>B<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">B<\/annotation><\/semantics><\/math>B \u7684\u542b\u4e49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e26\u5bbd\u7ffb\u500d\uff0c\u7406\u8bba\u6700\u5927\u901f\u7387\u4e5f\u7ffb\u500d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u4fe1\u566a\u6bd4\u7684\u5bf9\u6570\u89c4\u5f8b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9999\u519c\u5b9a\u7406\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u70b9\u662f\u5bf9\u6570\u9879\uff1a<math display=\"block\"><semantics><mrow><msub><mrow><mi>log<\/mi><mo>\u2061<\/mo><\/mrow><mn>2<\/mn><\/msub><mo stretchy=\"false\">(<\/mo><mn>1<\/mn><mo>+<\/mo><mrow><mi mathvariant=\"normal\">S<\/mi><mi mathvariant=\"normal\">N<\/mi><mi mathvariant=\"normal\">R<\/mi><\/mrow><mo stretchy=\"false\">)<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">\\log_2(1 + \\mathrm{SNR})<\/annotation><\/semantics><\/math>log2\u200b(1+SNR)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b83\u610f\u5473\u7740\u4e00\u4e2a\u975e\u5e38\u53cd\u76f4\u89c9\u7684\u7ed3\u8bba\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u63d0\u9ad8\u4fe1\u53f7\u529f\u7387\u7684\u6536\u76ca\u662f\u9012\u51cf\u7684\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>SNR<\/th><th><math><semantics><mrow><msub><mrow><mi>log<\/mi><mo>\u2061<\/mo><\/mrow><mn>2<\/mn><\/msub><mo stretchy=\"false\">(<\/mo><mn>1<\/mn><mo>+<\/mo><mrow><mi mathvariant=\"normal\">S<\/mi><mi mathvariant=\"normal\">N<\/mi><mi mathvariant=\"normal\">R<\/mi><\/mrow><mo stretchy=\"false\">)<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">\\log_2(1+\\mathrm{SNR})<\/annotation><\/semantics><\/math>log2\u200b(1+SNR)<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>1<\/td><\/tr><tr><td>10<\/td><td>3.46<\/td><\/tr><tr><td>100<\/td><td>6.66<\/td><\/tr><tr><td>1000<\/td><td>9.97<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u628a\u529f\u7387\u63d0\u9ad8 100 \u500d\uff0c\u901f\u7387\u53ea\u63d0\u5347\u7ea6 3 \u500d\u3002<br>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u73b0\u4ee3\u901a\u4fe1\u4e0d\u518d\u4f9d\u8d56\u201c\u52a0\u5927\u53d1\u5c04\u529f\u7387\u201d\uff0c\u800c\u662f\u901a\u8fc7\u4e89\u53d6\u66f4\u5bbd\u7684\u9891\u8c31\u6765\u63d0\u901f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u4e3a\u4ec0\u4e48 Wi-Fi \u4f1a\u5ffd\u5feb\u5ffd\u6162\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u5e38\u89c1\u7684 5 GHz Wi-Fi \u4e3a\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fe1\u9053\u5e26\u5bbd\u53ef\u80fd\u662f 80 MHz<\/li>\n\n\n\n<li>\u8ddd\u79bb\u8def\u7531\u5668\u8fd1\u65f6\uff0cSNR \u53ef\u80fd\u662f 1000<\/li>\n\n\n\n<li>\u9694\u4e24\u5835\u5899\u540e\uff0cSNR \u53ef\u80fd\u6389\u5230 10<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u9999\u519c\u516c\u5f0f\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd1\u8ddd\u79bb\uff1a<math display=\"block\"><semantics><mrow><mn>80<\/mn><mtext>MHz<\/mtext><mo>\u00d7<\/mo><msub><mrow><mi>log<\/mi><mo>\u2061<\/mo><\/mrow><mn>2<\/mn><\/msub><mo stretchy=\"false\">(<\/mo><mn>1001<\/mn><mo stretchy=\"false\">)<\/mo><mo>\u2248<\/mo><mn>800<\/mn><mtext>&nbsp;Mbps<\/mtext><\/mrow><annotation encoding=\"application\/x-tex\">80\\text{MHz} \\times \\log_2(1001) \\approx 800 \\text{ Mbps}<\/annotation><\/semantics><\/math>80MHz\u00d7log2\u200b(1001)\u2248800&nbsp;Mbps<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9694\u5899\uff1a<math display=\"block\"><semantics><mrow><mn>80<\/mn><mtext>MHz<\/mtext><mo>\u00d7<\/mo><msub><mrow><mi>log<\/mi><mo>\u2061<\/mo><\/mrow><mn>2<\/mn><\/msub><mo stretchy=\"false\">(<\/mo><mn>11<\/mn><mo stretchy=\"false\">)<\/mo><mo>\u2248<\/mo><mn>277<\/mn><mtext>&nbsp;Mbps<\/mtext><\/mrow><annotation encoding=\"application\/x-tex\">80\\text{MHz} \\times \\log_2(11) \\approx 277 \\text{ Mbps}<\/annotation><\/semantics><\/math>80MHz\u00d7log2\u200b(11)\u2248277&nbsp;Mbps<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u4e00\u4e2a\u8def\u7531\u5668\uff0c\u4ec5\u56e0\u4e3a\u4fe1\u566a\u6bd4\u53d8\u5316\uff0c\u901f\u5ea6\u5c31\u53ef\u4ee5\u4e0b\u964d\u4e09\u500d\u3002<br>\u8fd9\u5e76\u4e0d\u662f\u201cWi-Fi\u4e0d\u7a33\u5b9a\u201d\uff0c\u800c\u662f\u9999\u519c\u4e0a\u9650\u5728\u53d8\u5316\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u30014G\u30015G \u4e0e\u9891\u8c31<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">4G \u548c 5G \u7684\u6839\u672c\u5dee\u522b\u4e0d\u5728\u4e8e\u8c03\u5236\u6280\u5de7\uff0c\u800c\u5728\u4e8e<strong>\u53ef\u7528\u5e26\u5bbd<\/strong>\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6280\u672f<\/th><th>\u5355\u7528\u6237\u53ef\u7528\u9891\u8c31<\/th><\/tr><\/thead><tbody><tr><td>4G<\/td><td>10\u201320 MHz<\/td><\/tr><tr><td>5G\uff08Sub-6\uff09<\/td><td>~100 MHz<\/td><\/tr><tr><td>5G\uff08\u6beb\u7c73\u6ce2\uff09<\/td><td>400\u2013800 MHz<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4fe1\u566a\u6bd4\u76f8\u8fd1\u65f6\uff0c\u5e26\u5bbd\u6269\u5927 10 \u500d\uff0c\u901f\u7387\u4e0a\u9650\u4e5f\u6269\u5927 10 \u500d\u3002\u8fd9\u6b63\u662f 5G \u53ef\u4ee5\u8fbe\u5230\u591a Gbps \u7684\u6839\u672c\u539f\u56e0\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u4e3a\u4ec0\u4e48\u5149\u7ea4\u8fdc\u5f3a\u4e8e\u65e0\u7ebf\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e0\u7ebf\u4fe1\u9053\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6709\u5e72\u6270<\/li>\n\n\n\n<li>\u6709\u53cd\u5c04<\/li>\n\n\n\n<li>\u6709\u73af\u5883\u566a\u58f0<br>\u2192 SNR \u6ce2\u52a8\u5267\u70c8<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5149\u7ea4\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u51e0\u4e4e\u6ca1\u6709\u5916\u90e8\u566a\u58f0<\/li>\n\n\n\n<li>SNR \u53ef\u8fbe\u5341\u4ebf\u7ea7<\/li>\n\n\n\n<li>\u5e26\u5bbd\u8fbe\u5230 THz \u91cf\u7ea7<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e24\u4e2a\u56e0\u7d20\u5728\u9999\u519c\u5b9a\u7406\u4e2d\u540c\u65f6\u653e\u5927\uff0c\u4f7f\u5149\u7ea4\u901a\u4fe1\u7684\u6781\u9650\u901f\u5ea6\u8fdc\u8d85\u4efb\u4f55\u65e0\u7ebf\u6280\u672f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u9999\u519c\u5b9a\u7406\u63ed\u793a\u7684\u672c\u8d28<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7535\u78c1\u6ce2\u7684\u4f20\u64ad\u901f\u5ea6\u90fd\u662f\u5149\u901f\uff0c\u4f46<strong>\u4fe1\u606f\u7684\u4f20\u8f93\u901f\u5ea6\u4e0d\u662f\u7531\u5149\u901f\u51b3\u5b9a\u7684<\/strong>\uff0c\u800c\u662f\u7531\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728\u566a\u58f0\u4e2d\uff0c\u80fd\u533a\u5206\u591a\u5c11\u79cd\u4e0d\u540c\u7684\u4fe1\u53f7\u72b6\u6001\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u9999\u519c\u5b9a\u7406\u7ed9\u51fa\u4e86\u8fd9\u4e2a\u533a\u5206\u80fd\u529b\u7684\u7edd\u5bf9\u4e0a\u9650\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u4ee3\u901a\u4fe1\u6280\u672f\u7684\u53d1\u5c55\uff0c\u5e76\u4e0d\u662f\u5728\u7a81\u7834\u7269\u7406\u6781\u9650\uff0c\u800c\u662f\u5728\u4e0d\u65ad\u903c\u8fd1\u9999\u519c\u5b9a\u7406\u6240\u63cf\u8ff0\u7684\u90a3\u6761\u6781\u9650\u66f2\u7ebf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Wi-Fi\u30014G\u30015G\u3001\u5149\u7ea4\uff0c\u5b83\u4eec\u770b\u4f3c\u5dee\u522b\u5de8\u5927\uff0c\u672c\u8d28\u4e0a\u90fd\u53ea\u662f\u5bf9\u540c\u4e00\u4e2a\u516c\u5f0f\u7684\u4e0d\u540c\u5b9e\u73b0\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p 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