{"id":97370,"date":"2024-09-02T11:39:01","date_gmt":"2024-09-02T03:39:01","guid":{"rendered":"\/\/www.viralrail.com\/?p=97370"},"modified":"2024-09-02T11:39:12","modified_gmt":"2024-09-02T03:39:12","slug":"cssmwllx","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/97370.html","title":{"rendered":"CDMA\u662f\u4ec0\u4e48\u7f51\u7edc\u7c7b\u578b"},"content":{"rendered":"\n

\u3000\u3000CDMA<\/a><\/strong>(\u7801\u5206\u591a\u5740\uff0cCode Division Multiple Access)\u662f\u4e00\u79cd\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\uff0c\u7528\u4e8e\u5728\u540c\u4e00\u9891\u8c31\u4e2d\u5141\u8bb8\u591a\u4e2a\u7528\u6237\u540c\u65f6\u4f20\u8f93\u6570\u636e\u3002\u5b83\u662f\u4e00\u79cd\u591a\u5740\u63a5\u5165\u6280\u672f\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u8702\u7a9d\u79fb\u52a8\u901a\u4fe1\u7f51\u7edc\u3002CDMA\u7684\u4e3b\u8981\u7279\u70b9\u662f\u901a\u8fc7\u4f7f\u7528\u4e0d\u540c\u7684\u4f2a\u968f\u673a\u7801(PN\u7801)\u6765\u533a\u5206\u4e0d\u540c\u7684\u7528\u6237\u4fe1\u53f7\uff0c\u4ece\u800c\u5b9e\u73b0\u591a\u7528\u6237\u540c\u65f6\u901a\u4fe1\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001 CDMA\u7269\u8054\u7f51\u7c7b\u578b\u7b80\u4ecb<\/h2>\n\n\n\n

\u3000\u30001. CDMA\u7f51\u7edc\u7684\u7c7b\u578b\u548c\u5e94\u7528<\/h3>\n\n\n\n

\u3000\u3000(1). CDMA One\uff08IS-95\uff09<\/strong>\uff1a<\/h4>\n\n\n\n

\u3000\u3000\u8fd9\u662f\u6700\u65e9\u7684CDMA\u6807\u51c6\uff0c\u7531\u9ad8\u901a\u516c\u53f8\u5f00\u53d1\u3002<\/p>\n\n\n\n

\u3000\u3000\u5de5\u4f5c\u5728800 MHz\u548c1900 MHz\u9891\u6bb5\u3002<\/p>\n\n\n\n

\u3000\u3000\u63d0\u4f9b\u8bed\u97f3\u548c\u4f4e\u901f\u6570\u636e\u670d\u52a1\u3002<\/p>\n\n\n\n

\u3000\u3000(2). CDMA2000<\/strong>\uff1a<\/h4>\n\n\n\n

\u3000\u3000CDMA2000\u662fCDMA One\u7684\u6f14\u8fdb\u7248\u672c\uff0c\u5c5e\u4e8e3G\u6280\u672f\u3002<\/p>\n\n\n\n

\u3000\u3000\u5305\u62ec\u591a\u4e2a\u7248\u672c\uff0c\u5982CDMA2000 1xRTT\u3001CDMA2000 1xEV-DO(Evolution-Data Optimized)\u3002<\/p>\n\n\n\n

    \n
  • \u3000\u3000CDMA2000 1xRTT\uff1a\u63d0\u4f9b\u66f4\u9ad8\u7684\u8bed\u97f3\u5bb9\u91cf\u548c\u6570\u636e\u901f\u7387\u3002<\/li>\n\n\n\n
  • \u3000\u3000CDMA2000 1xEV-DO\uff1a\u4e13\u6ce8\u4e8e\u6570\u636e\u4f20\u8f93\uff0c\u63d0\u4f9b\u8f83\u9ad8\u7684\u6570\u636e\u901f\u7387(\u4e0b\u884c\u901f\u7387\u53ef\u8fbe\u6570Mbps)\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u5de5\u4f5c\u5728800 MHz\u30011900 MHz\u548c\u5176\u4ed6\u9891\u6bb5\u3002<\/li>\n<\/ul>\n\n\n\n

    \u3000\u3000(3). WCDMA\uff08Wideband CDMA\uff09<\/strong>\uff1a<\/h4>\n\n\n\n

    \u3000\u3000WCDMA\u662fUMTS(\u901a\u7528\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf)\u7684\u4e00\u90e8\u5206\uff0c\u662f3G\u7684\u53e6\u4e00\u79cd\u6807\u51c6\uff0c\u4e3b\u8981\u5728GSM\u6f14\u8fdb\u8def\u5f84\u4e2d\u4f7f\u7528\u3002<\/p>\n\n\n\n

    \u3000\u3000\u5de5\u4f5c\u57282100 MHz\u9891\u6bb5(\u5728\u6b27\u6d32\u548c\u4e9a\u6d32)\uff0c\u4e5f\u5728\u5176\u4ed6\u9891\u6bb5(\u5982850 MHz\u548c1900 MHz)\u4f7f\u7528\u3002<\/p>\n\n\n\n

    \u3000\u3000\u63d0\u4f9b\u8bed\u97f3\u548c\u9ad8\u901f\u6570\u636e\u670d\u52a1\u3002<\/p>\n\n\n\n

    \u3000\u3000(4). CDMA\u57284G LTE<\/strong>\uff1a<\/h4>\n\n\n\n

    \u3000\u3000\u867d\u7136LTE(\u957f\u671f\u6f14\u8fdb)\u6280\u672f\u4e3b\u8981\u57fa\u4e8eOFDM(\u6b63\u4ea4\u9891\u5206\u590d\u7528)\uff0c\u4f46\u4e00\u4e9bLTE\u7f51\u7edc\u4ecd\u7136\u4f7f\u7528CDMA\u4f5c\u4e3a\u5176\u57fa\u7840\u7684\u63a5\u5165\u6280\u672f\u4e4b\u4e00\u3002<\/p>\n\n\n\n

    \u3000\u3000LTE\u7f51\u7edc\u63d0\u4f9b\u66f4\u9ad8\u7684\u6570\u636e\u901f\u7387\u548c\u66f4\u4f4e\u7684\u5ef6\u8fdf\u3002<\/p>\n\n\n\n

    \u3000\u30002. CDMA\u7f51\u7edc\u7684\u7279\u70b9<\/h3>\n\n\n\n
      \n
    • \u3000\u3000\u9891\u8c31\u6548\u7387\u9ad8<\/strong>\uff1aCDMA\u901a\u8fc7\u6269\u9891\u6280\u672f\u4f7f\u591a\u4e2a\u7528\u6237\u5171\u4eab\u540c\u4e00\u9891\u6bb5\uff0c\u63d0\u9ad8\u4e86\u9891\u8c31\u5229\u7528\u7387\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u6297\u5e72\u6270\u80fd\u529b\u5f3a<\/strong>\uff1aCDMA\u7684\u6269\u9891\u6280\u672f\u548c\u4f2a\u968f\u673a\u7801\u4f7f\u5f97\u5176\u5bf9\u5e72\u6270\u548c\u591a\u5f84\u6548\u5e94\u6709\u8f83\u5f3a\u7684\u62b5\u6297\u80fd\u529b\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u8f6f\u5207\u6362<\/strong>\uff1aCDMA\u7f51\u7edc\u652f\u6301\u8f6f\u5207\u6362(soft handoff)\uff0c\u5373\u7528\u6237\u5728\u591a\u4e2a\u57fa\u7ad9\u4e4b\u95f4\u5207\u6362\u65f6\u4e0d\u4f1a\u4e2d\u65ad\u901a\u8bdd\uff0c\u51cf\u5c11\u4e86\u6389\u8bdd\u7387\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u5bb9\u91cf\u5927<\/strong>\uff1a\u7531\u4e8e\u5176\u9ad8\u9891\u8c31\u6548\u7387\uff0cCDMA\u7f51\u7edc\u53ef\u4ee5\u652f\u6301\u66f4\u591a\u7684\u7528\u6237\u540c\u65f6\u901a\u4fe1\u3002<\/li>\n<\/ul>\n\n\n\n

      \u3000\u30003. \u603b\u7ed3<\/h3>\n\n\n\n

      \u3000\u3000CDMA\u662f\u4e00\u79cd\u91cd\u8981\u7684\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e2G\u30013G\u548c\u67d0\u4e9b4G\u7f51\u7edc\u4e2d\u3002\u5176\u9ad8\u9891\u8c31\u6548\u7387\u548c\u5f3a\u5927\u7684\u6297\u5e72\u6270\u80fd\u529b\u4f7f\u5176\u5728\u8702\u7a9d\u79fb\u52a8\u901a\u4fe1\u4e2d\u5360\u636e\u4e86\u91cd\u8981\u5730\u4f4d\u3002CDMA\u7f51\u7edc\u7684\u4e3b\u8981\u7c7b\u578b\u5305\u62ecCDMA One\u3001CDMA2000\u548cWCDMA\uff0c\u6bcf\u79cd\u7c7b\u578b\u5728\u4e0d\u540c\u7684\u9891\u6bb5\u548c\u5e94\u7528\u573a\u666f\u4e2d\u53d1\u6325\u4f5c\u7528\u3002<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      \u3000\u3000\u4e8c\u3001 CDMA\u6280\u672f\u5728\u5f53\u524d5G\u7f51\u7edc\u4e2d\u7684\u5e94\u7528\u548c\u517c\u5bb9\u6027<\/h2>\n\n\n\n

      \u3000\u3000\u5728\u5f53\u524d\u76845G\u7f51\u7edc\u4e2d\uff0cCDMA\u6280\u672f\u7684\u76f4\u63a5\u5e94\u7528\u548c\u517c\u5bb9\u6027\u76f8\u5bf9\u8f83\u5c11\uff0c\u4e3b\u8981\u539f\u56e0\u662f5G\u6280\u672f\u91c7\u7528\u4e86\u5168\u65b0\u7684\u65e0\u7ebf\u63a5\u5165\u6280\u672f\u548c\u7f51\u7edc\u67b6\u6784\u3002\u7136\u800c\uff0cCDMA\u6280\u672f\u53ca\u5176\u76f8\u5173\u7406\u5ff5\u5728\u4e00\u4e9b\u65b9\u9762\u5bf95G\u7684\u53d1\u5c55\u4ecd\u6709\u95f4\u63a5\u5f71\u54cd\u3002<\/p>\n\n\n\n

      \u3000\u30001. 5G\u65e0\u7ebf\u63a5\u5165\u6280\u672f<\/h3>\n\n\n\n

      \u3000\u30005G\u7f51\u7edc\u4e3b\u8981\u91c7\u7528\u4ee5\u4e0b\u51e0\u79cd\u65e0\u7ebf\u63a5\u5165\u6280\u672f\uff1a<\/p>\n\n\n\n

        \n
      • \u3000\u3000OFDM\uff08\u6b63\u4ea4\u9891\u5206\u590d\u7528\uff09<\/strong>\uff1a\u8fd9\u662f5G\u7684\u4e3b\u8981\u65e0\u7ebf\u63a5\u5165\u6280\u672f\uff0c\u5177\u6709\u9ad8\u9891\u8c31\u6548\u7387\u548c\u6297\u5e72\u6270\u80fd\u529b\u3002<\/li>\n\n\n\n
      • \u3000\u3000MIMO\uff08\u591a\u8f93\u5165\u591a\u8f93\u51fa\uff09<\/strong>\uff1a\u901a\u8fc7\u4f7f\u7528\u591a\u4e2a\u5929\u7ebf\u6765\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u53ef\u9760\u6027\u3002<\/li>\n\n\n\n
      • \u3000\u3000\u6beb\u7c73\u6ce2\uff08mmWave\uff09<\/strong>\uff1a\u5229\u7528\u9ad8\u9891\u6bb5(24 GHz\u53ca\u4ee5\u4e0a)\u63d0\u4f9b\u8d85\u9ad8\u6570\u636e\u901f\u7387\u548c\u5bb9\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n

        \u3000\u30002. CDMA\u6280\u672f\u57285G\u4e2d\u7684\u95f4\u63a5\u5f71\u54cd<\/h3>\n\n\n\n

        \u3000\u3000\u867d\u7136CDMA\u6280\u672f\u672c\u8eab\u57285G\u4e2d\u6ca1\u6709\u76f4\u63a5\u5e94\u7528\uff0c\u4f46\u5176\u4e00\u4e9b\u7406\u5ff5\u548c\u6280\u672f\u5bf95G\u7684\u53d1\u5c55\u6709\u4e00\u5b9a\u7684\u5f71\u54cd\uff1a<\/p>\n\n\n\n

        \u3000\u3000(1). \u6269\u9891\u6280\u672f<\/strong>\uff1a<\/h4>\n\n\n\n

        \u3000\u3000CDMA\u7684\u6269\u9891\u6280\u672f(Spread Spectrum)\u63d0\u9ad8\u4e86\u6297\u5e72\u6270\u80fd\u529b\uff0c\u8fd9\u4e00\u7406\u5ff5\u57285G\u4e2d\u901a\u8fc7\u66f4\u5148\u8fdb\u7684\u4fe1\u53f7\u5904\u7406\u6280\u672f\u5f97\u5230\u4e86\u5e94\u7528\u3002<\/p>\n\n\n\n

        \u3000\u3000(2). \u9891\u8c31\u5171\u4eab<\/strong>\uff1a<\/h4>\n\n\n\n

        \u3000\u3000CDMA\u901a\u8fc7\u7801\u5206\u591a\u5740\u5b9e\u73b0\u4e86\u9891\u8c31\u5171\u4eab\uff0c\u8fd9\u4e00\u6982\u5ff5\u57285G\u4e2d\u901a\u8fc7\u5148\u8fdb\u7684\u9891\u8c31\u7ba1\u7406\u548c\u52a8\u6001\u9891\u8c31\u5171\u4eab\u6280\u672f\u5f97\u4ee5\u5ef6\u7eed\u3002<\/p>\n\n\n\n

        \u3000\u3000(3). \u8f6f\u5207\u6362\u548c\u5e72\u6270\u7ba1\u7406<\/strong>\uff1a<\/h4>\n\n\n\n

        \u3000\u3000CDMA\u7684\u8f6f\u5207\u6362\u6280\u672f\u51cf\u5c11\u4e86\u6389\u8bdd\u7387\uff0c\u8fd9\u4e00\u7406\u5ff5\u57285G\u4e2d\u901a\u8fc7\u66f4\u667a\u80fd\u7684\u5207\u6362\u548c\u5e72\u6270\u7ba1\u7406\u6280\u672f\u5f97\u5230\u4e86\u5e94\u7528\u3002<\/p>\n\n\n\n

        \u3000\u30003. 5G\u7f51\u7edc\u4e2d\u7684\u517c\u5bb9\u6027<\/h3>\n\n\n\n

        \u3000\u3000\u867d\u71365G\u7f51\u7edc\u4e3b\u8981\u91c7\u7528\u65b0\u7684\u65e0\u7ebf\u63a5\u5165\u6280\u672f\uff0c\u4f46\u4e3a\u4e86\u786e\u4fdd\u54115G\u7684\u5e73\u6ed1\u8fc7\u6e21\uff0c5G\u7f51\u7edc\u4ecd\u7136\u9700\u8981\u517c\u5bb9\u548c\u652f\u6301\u73b0\u6709\u76843G\u548c4G\u7f51\u7edc\uff0c\u5305\u62ecCDMA2000\u548cWCDMA\u7b49\u3002\u4e3b\u8981\u7684\u517c\u5bb9\u6027\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n

        \u3000\u3000(1). \u591a\u6a21\u8bbe\u5907<\/strong>\uff1a<\/h4>\n\n\n\n

        \u3000\u3000\u73b0\u4ee35G\u8bbe\u5907\u901a\u5e38\u662f\u591a\u6a21\u7684\uff0c\u652f\u63015G\u30014G\u30013G\u751a\u81f32G\u7f51\u7edc\u3002\u8fd9\u610f\u5473\u7740\u7528\u6237\u8bbe\u5907\u53ef\u4ee5\u5728\u4e0d\u540c\u7f51\u7edc\u4e4b\u95f4\u65e0\u7f1d\u5207\u6362\uff0c\u786e\u4fdd\u5728\u6ca1\u67095G\u8986\u76d6\u7684\u533a\u57df\u4ecd\u80fd\u4f7f\u75284G\u62163G\u7f51\u7edc\u3002<\/p>\n\n\n\n

        \u3000\u3000(2). \u7f51\u7edc\u56de\u9000<\/strong>\uff1a<\/h4>\n\n\n\n

        \u3000\u3000\u5728\u6ca1\u67095G\u8986\u76d6\u7684\u533a\u57df\uff0c\u7528\u6237\u8bbe\u5907\u53ef\u4ee5\u56de\u9000\u52304G\u62163G\u7f51\u7edc\u7ee7\u7eed\u901a\u4fe1\u3002\u5bf9\u4e8e\u4f7f\u7528CDMA2000\u7684\u533a\u57df\uff0c\u8bbe\u5907\u53ef\u4ee5\u56de\u9000\u5230CDMA2000\u7f51\u7edc\u3002<\/p>\n\n\n\n

        \u3000\u3000(3). \u6838\u5fc3\u7f51\u7684\u4e92\u901a<\/strong>\uff1a<\/h4>\n\n\n\n

        \u3000\u30005G\u6838\u5fc3\u7f51(5GC)\u8bbe\u8ba1\u65f6\u8003\u8651\u4e86\u4e0e\u73b0\u67094G\u6838\u5fc3\u7f51(EPC)\u7684\u4e92\u901a\u6027\uff0c\u786e\u4fdd\u7528\u6237\u5728\u4e0d\u540c\u7f51\u7edc\u4e4b\u95f4\u5207\u6362\u65f6\u4e0d\u4f1a\u4e2d\u65ad\u670d\u52a1\u3002<\/p>\n\n\n\n

        \u3000\u30004. \u603b\u7ed3<\/h3>\n\n\n\n

        \u3000\u3000\u867d\u7136CDMA\u6280\u672f\u672c\u8eab\u57285G\u7f51\u7edc\u4e2d\u7684\u76f4\u63a5\u5e94\u7528\u8f83\u5c11\uff0c\u4f46\u5176\u4e00\u4e9b\u7406\u5ff5\u548c\u6280\u672f\u5bf95G\u7684\u53d1\u5c55\u6709\u95f4\u63a5\u5f71\u54cd\u30025G\u7f51\u7edc\u4e3b\u8981\u91c7\u7528\u65b0\u7684\u65e0\u7ebf\u63a5\u5165\u6280\u672f\uff0c\u5982OFDM\u548cMIMO\uff0c\u4f46\u4e3a\u4e86\u786e\u4fdd\u54115G\u7684\u5e73\u6ed1\u8fc7\u6e21\uff0c5G\u8bbe\u5907\u548c\u7f51\u7edc\u4ecd\u9700\u8981\u517c\u5bb9\u548c\u652f\u6301\u73b0\u6709\u76843G\u548c4G\u7f51\u7edc\uff0c\u5305\u62ecCDMA2000\u548cWCDMA\u7b49\u3002\u901a\u8fc7\u591a\u6a21\u8bbe\u5907\u3001\u7f51\u7edc\u56de\u9000\u548c\u6838\u5fc3\u7f51\u7684\u4e92\u901a\u6027\uff0c5G\u7f51\u7edc\u80fd\u591f\u5b9e\u73b0\u4e0e\u73b0\u6709\u7f51\u7edc\u7684\u65e0\u7f1d\u517c\u5bb9\u548c\u8fc7\u6e21\u3002<\/p>\n\n\n\n

        \"\"<\/figure>\n\n\n\n

        \u3000\u3000\u4e09\u3001 CDMA\u7f51\u7edc\u4e0e\u5176\u4ed6\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u7684\u6027\u80fd\u548c\u8986\u76d6\u8303\u56f4\u5bf9\u6bd4<\/h2>\n\n\n\n

        \u3000\u3000\u6bd4\u8f83CDMA\u7f51\u7edc\u4e0e\u5176\u4ed6\u65e0\u7ebf\u901a\u4fe1\u6280\u672f(\u5982GSM\u3001LTE)\u7684\u6027\u80fd\u548c\u8986\u76d6\u8303\u56f4\uff0c\u53ef\u4ee5\u4ece\u591a\u4e2a\u65b9\u9762\u8fdb\u884c\u5206\u6790\u3002<\/p>\n\n\n\n

        \u3000\u3000\u4ece\u8986\u76d6\u8303\u56f4\u6765\u770b\uff0cCDMA\u7f51\u7edc\u5728\u65e9\u671f\u7684\u8986\u76d6\u6027\u80fd\u4e0a\u5177\u6709\u660e\u663e\u4f18\u52bf\u3002\u6839\u636e\u76f8\u5173\u7814\u7a76\uff0cCDMA\u7f51\u7edc\u5728\u540c\u6837\u73af\u5883\u7684\u5c0f\u533a\u534a\u5f84\u4e0b\u6240\u9700\u7684\u5c0f\u533a\u6570\u6bd4GSM\u5c1180%\uff0c\u5b9e\u9645\u4f7f\u7528\u60c5\u51b5\u8868\u660eCDMA\u7684\u8986\u76d6\u533a\u57df\u66f4\u5e7f\u3002\u6b64\u5916\uff0cCDMA\u7f51\u7edc\u5728\u57ce\u5e02\u6df1\u5ea6\u3001\u519c\u6751\u548c\u8fb9\u8fdc\u5730\u533a\u7684\u8986\u76d6\u4e5f\u8868\u73b0\u826f\u597d\u3002<\/p>\n\n\n\n

        \u3000\u3000\u5728LTE\u7f51\u7edc\u65b9\u9762\uff0c\u5176\u8986\u76d6\u6027\u80fd\u4e0eCDMA\u76f8\u6bd4\u6709\u6240\u4e0d\u540c\u3002\u5728\u4f4e\u9891\u53ca\u9ad8\u9891\u90e8\u7f72\u4e0b\uff0cLTE\u7cfb\u7edf\u7684\u8986\u76d6\u6027\u80fd\u9700\u8981\u7279\u522b\u5173\u6ce8\uff0c\u5c24\u5176\u662f\u5728\u9ad8\u9891\u90e8\u7f72\u65f6\uff0c\u8986\u76d6\u95ee\u9898\u66f4\u4e3a\u7a81\u51fa\u3002\u7136\u800c\uff0c\u901a\u8fc7\u5929\u7ebf\u6302\u9ad8\u7b49\u6280\u672f\u624b\u6bb5\uff0cLTE\u7f51\u7edc\u7684\u8986\u76d6\u8303\u56f4\u53ef\u4ee5\u5f97\u5230\u6539\u5584\u3002<\/p>\n\n\n\n

        \u3000\u3000\u4ece\u6027\u80fd\u4f18\u5316\u7684\u89d2\u5ea6\u6765\u770b\uff0cCDMA\u7f51\u7edc\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u63d0\u5347\u5176\u6027\u80fd\u548c\u8986\u76d6\u8303\u56f4\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u5c06\u57fa\u7ad9\u6247\u533a\u5212\u5206\u4e3a\u66f4\u5c0f\u7684\u533a\u57df\uff0c\u53ef\u4ee5\u6709\u6548\u51cf\u5c11\u6bcf\u4e2a\u6247\u533a\u5185\u7684\u7528\u6237\u6570\uff0c\u4ece\u800c\u63d0\u9ad8\u7f51\u7edc\u5bb9\u91cf\u3002\u6b64\u5916\uff0c\u8f7d\u6ce2\u805a\u5408\u6280\u672f\u4e5f\u53ef\u4ee5\u4e3a\u7528\u6237\u63d0\u4f9b\u66f4\u5927\u7684\u5e26\u5bbd\uff0c\u4ece\u800c\u63d0\u5347\u6574\u4f53\u6027\u80fd\u3002<\/p>\n\n\n\n

        \u3000\u3000GSM\u7f51\u7edc\u5728\u65e9\u671f\u7684\u8986\u76d6\u80fd\u529b\u4e0a\u4e5f\u8868\u73b0\u826f\u597d\uff0c\u4f46\u4e0eCDMA\u76f8\u6bd4\uff0c\u5176\u8986\u76d6\u8303\u56f4\u7565\u900a\u4e00\u7b79\u3002\u7136\u800c\uff0c\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0cGSM\u7f51\u7edc\u4e5f\u5728\u4e0d\u65ad\u4f18\u5316\u5176\u8986\u76d6\u6027\u80fd\u3002<\/p>\n\n\n\n

        \u3000\u3000CDMA\u7f51\u7edc\u5728\u65e9\u671f\u7684\u8986\u76d6\u8303\u56f4\u548c\u6027\u80fd\u4e0a\u5177\u6709\u660e\u663e\u4f18\u52bf\uff0c\u4f46\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0cLTE\u548cGSM\u4e5f\u5728\u4e0d\u65ad\u6539\u8fdb\u5176\u8986\u76d6\u548c\u6027\u80fd\u3002<\/p>\n\n\n\n

        \u3000\u3000\u56db\u3001 CDMA\u6280\u672f\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf<\/h2>\n\n\n\n

        \u3000\u3000CDMA\u6280\u672f\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf\u548c\u6f5c\u5728\u7684\u66ff\u4ee3\u6280\u672f\u53ef\u4ee5\u4ece\u591a\u4e2a\u65b9\u9762\u8fdb\u884c\u5206\u6790\u3002<\/p>\n\n\n\n

        \u3000\u3000\u4ece\u672a\u6765\u53d1\u5c55\u8d8b\u52bf\u6765\u770b\uff0cCDMA\u6280\u672f\u9700\u8981\u52a0\u5feb\u6280\u672f\u521b\u65b0\u548c\u4ea7\u4e1a\u5347\u7ea7\uff0c\u79ef\u6781\u63a2\u7d22\u4e0e5G\u6280\u672f\u7684\u878d\u5408\u4e4b\u9053\uff0c\u4ee5\u63d0\u5347\u4ea7\u54c1\u7ade\u4e89\u529b\uff0c\u6ee1\u8db3\u5e02\u573a\u7684\u65b0\u9700\u6c42\u3002\u6b64\u5916\uff0cCDMA\u6280\u672f\u5728\u6838\u5fc3\u7f51\u548c\u65e0\u7ebf\u4fa7\u7684\u6280\u672f\u53d1\u5c55\u4e5f\u5728\u4e0d\u65ad\u8fdb\u6b65\uff0c\u4f8b\u5982\uff0c\u5f88\u591aC\u7f51\u8fd0\u8425\u5546\u90fd\u5728\u79ef\u6781\u5efa\u8bbeEVDOA\u7248\u672c\u7f51\u7edc\uff0c\u8fd9\u662fC\u7f51\u672a\u6765\u53d1\u5c55\u7684\u4e3b\u8981\u65b9\u5411\u3002\u534e\u4e3a\u4e5f\u8ba4\u4e3a\uff0c\u65e0\u7ebf\u5bbd\u5e26\u6570\u636e\u4e1a\u52a1\u5c06\u4ee5\u6bcf\u5e742.2\u500d\u7684\u901f\u5ea6\u589e\u957f\uff0c\u8fd0\u8425\u5546\u6536\u5165\u7684\u5e74\u589e\u957f\u7387\u572835%\u5de6\u53f3\uff0c\u8fd9\u8868\u660eCDMA\u6280\u672f\u5728\u65e0\u7ebf\u5bbd\u5e26\u9886\u57df\u4ecd\u6709\u8f83\u5927\u7684\u53d1\u5c55\u6f5c\u529b\u3002<\/p>\n\n\n\n

        \u3000\u3000\u5173\u4e8e\u6f5c\u5728\u7684\u66ff\u4ee3\u6280\u672f\uff0cLTE\u6280\u672f\u662f\u76ee\u524d\u88ab\u8ba4\u4e3a\u6700\u6709\u53ef\u80fd\u66ff\u4ee3CDMA\u6280\u672f\u7684\u4e3b\u8981\u6280\u672f\u4e4b\u4e00\u3002\u4ece\u6280\u672f\u7279\u70b9\u6765\u770b\uff0cLTE\u6280\u672f\u4ee5MIMO\u548cOFDM\u4e3a\u6280\u672f\u7279\u70b9\uff0c\u5177\u6709\u66f4\u9ad8\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u66f4\u597d\u7684\u9891\u8c31\u6548\u7387\u3002\u6b64\u5916\uff0c\u90e8\u7f72LTE\/EPC\u7f51\u7edc\uff0c\u5b8c\u5168\u66ff\u4ee3\u9648\u65e7\u7684CDMA2000\u7f51\u7edc\uff0c\u65b0\u5efaLTE\/EPC\u7f51\u7edc\uff0c\u539f\u6709\u7f51\u7edc\u4f5c\u4e3a\u65b0\u5efa\u7f51\u7edc\u7684\u8865\u5145\uff0c\u9010\u6b65\u6269\u5927LTE\u7f51\u7edc\u8986\u76d6\u8303\u56f4\uff0c\u539f\u6709\u7f51\u7edc\u9010\u6b65\u9000\u7f51\uff0c\u8fd9\u4e5f\u662f\u672a\u6765CDMA\u6280\u672f\u5411LTE\u6f14\u8fdb\u7684\u4e3b\u8981\u8def\u5f84\u3002<\/p>\n\n\n\n

        \u3000\u3000\u4e94\u3001 \u5728\u5168\u7403\u8303\u56f4\u5185\uff0c\u54ea\u4e9b\u56fd\u5bb6\u6216\u5730\u533a\u4ecd\u7136\u4e3b\u8981\u4f7f\u7528CDMA\u7f51\u7edc<\/h2>\n\n\n\n

        \u3000\u3000\u5728\u5168\u7403\u8303\u56f4\u5185\uff0c\u4ecd\u7136\u4e3b\u8981\u4f7f\u7528CDMA\u7f51\u7edc\u7684\u56fd\u5bb6\u6216\u5730\u533a\u5305\u62ec\u4e2d\u56fd\u3001\u97e9\u56fd\u548c\u65e5\u672c\u3002\u8fd9\u4e9b\u5730\u533a\u7684\u7f51\u7edc\u5347\u7ea7\u8ba1\u5212\u4e3b\u8981\u96c6\u4e2d\u5728\u4eceCDMA\u5411\u66f4\u5148\u8fdb\u7684\u79fb\u52a8\u901a\u4fe1\u6280\u672f\u7684\u8fc7\u6e21\u3002<\/p>\n\n\n\n

        \u3000\u3000\u4e2d\u56fd\u5927\u9646\u73b0\u5b58\u7684CDMA\u7f51\u7edc\u4e3b\u8981\u7531\u4e2d\u56fd\u7535\u4fe1\u8fd0\u8425\uff0c\u672a\u6765\u4f1a\u9010\u6b65\u5347\u7ea7\u52305G\u7f51\u7edc\uff0c\u4ee5\u9002\u5e94\u79fb\u52a8\u6570\u636e\u4e1a\u52a1\u7684\u5feb\u901f\u589e\u957f\u3002\u4e2d\u56fd\u9999\u6e2f\u7684CDMA\u7f51\u7edc\u7531\u7535\u8baf\u76c8\u79d1\u79fb\u52a8\u901a\u4fe1\u8fd0\u8425\uff0c\u540c\u6837\u9762\u4e34\u7740\u54115G\u7f51\u7edc\u5347\u7ea7\u7684\u538b\u529b\u3002\u97e9\u56fd\u7684CDMA\u7528\u6237\u6bd4\u4f8b\u8f83\u9ad8\uff0c\u4f46\u968f\u77405G\u7f51\u7edc\u7684\u63a8\u5e7f\uff0cCDMA\u7f51\u7edc\u7684\u4f7f\u7528\u5c06\u4f1a\u9010\u6e10\u51cf\u5c11\u3002\u65e5\u672c\u7684CDMA\u7f51\u7edc\u4e5f\u6b63\u5728\u54115G\u7f51\u7edc\u8fc7\u6e21\uff0c\u4ee5\u6ee1\u8db3\u66f4\u9ad8\u7684\u6570\u636e\u4f20\u8f93\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

        CDMA(\u7801\u5206\u591a\u5740\uff0cCode Division Multiple Access)\u662f\u4e00\u79cd\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\uff0c\u7528\u4e8e\u5728\u540c\u4e00\u9891\u8c31\u4e2d\u5141\u8bb8\u591a\u4e2a\u7528\u6237\u540c\u65f6\u4f20\u8f93\u6570\u636e\u3002\u5b83\u662f\u4e00\u79cd\u591a\u5740\u63a5\u5165\u6280\u672f\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u8702\u7a9d\u79fb\u52a8\u901a\u4fe1\u7f51\u7edc<\/p>\n","protected":false},"author":1,"featured_media":97371,"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":[52],"class_list":["post-97370","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-wxtx"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/97370"}],"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=97370"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/97370\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/97371"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=97370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=97370"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=97370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}