{"id":10471,"date":"2021-08-06T03:28:50","date_gmt":"2021-08-06T10:28:50","guid":{"rendered":"https:\/\/www.litepoint.com\/?post_type=blog&p=10471"},"modified":"2021-08-06T03:28:55","modified_gmt":"2021-08-06T10:28:55","slug":"%e7%94%b13gpp%e5%ae%9a%e4%b9%89%e7%9a%84%e7%9b%b4%e6%8e%a5%e8%bf%9c%e5%9c%ba%ef%bc%88dff-%ef%bc%89%e4%b8%8e-%e7%b4%a7%e7%bc%a9%e5%9c%ba%ef%bc%88catr%ef%bc%89-ota-%e6%9a%97%e5%ae%a4%e6%b5%8b%e8%af%95","status":"publish","type":"blog","link":"https:\/\/www.litepoint.com\/zh-hans\/blog\/%e7%94%b13gpp%e5%ae%9a%e4%b9%89%e7%9a%84%e7%9b%b4%e6%8e%a5%e8%bf%9c%e5%9c%ba%ef%bc%88dff-%ef%bc%89%e4%b8%8e-%e7%b4%a7%e7%bc%a9%e5%9c%ba%ef%bc%88catr%ef%bc%89-ota-%e6%9a%97%e5%ae%a4%e6%b5%8b%e8%af%95\/","title":{"rendered":"\u75313GPP\u5b9a\u4e49\u7684\u76f4\u63a5\u8fdc\u573a\uff08DFF \uff09\u4e0e \u7d27\u7f29\u573a\uff08CATR\uff09 OTA \u6697\u5ba4\u6d4b\u8bd5\u65b9\u6cd5\u4e4b\u6bd4\u8f83"},"content":{"rendered":"\n
\"OTA<\/figure>\n\n\n\n

<\/p>\n\n\n\n

LitePoint Khushboo Kalyani\u662f\u8fd9\u4e2a\u4e09\u90e8\u5206\u535a\u5ba2\u7cfb\u5217\u7684\u4f5c\u8005\u3002\u5728\u6574\u4e2a\u7cfb\u5217\u4e2d\uff0c\u60a8\u5c06\u4e86\u89e3\u4e3a\u4ec0\u4e48\u5728<\/em>\u6beb\u7c73\u6ce2\uff08mmWave\uff09<\/em>\u9891\u7387\u4e0b\u8fdb\u884cOTA \u6d4b\u8bd5\u81f3\u5173\u91cd\u8981\uff0c\u5f71\u54cd OTA \u6d4b\u8bd5\u6697\u5ba4\u7684\u5173\u952e\u6982\u5ff5\u3001\u6d4b\u91cf\u51b3\u7b56\u548c 3GPP \u5b9a\u4e49\u7684\u6d4b\u8bd5\u65b9\u6cd5\u3002<\/em><\/p>\n\n\n\n

\u75313GPP\u5b9a\u4e49\u7684\u76f4\u63a5\u8fdc\u573a\uff08DFF \uff09\u4e0e \u7d27\u7f29\u573a\uff08CATR\uff09 OTA \u6697\u5ba4\u6d4b\u8bd5\u65b9\u6cd5\u4e4b\u6bd4\u8f83<\/strong><\/p>\n\n\n\n

\u5728\u4e4b\u524d\u7684\u6587\u7ae0\u4e2d\uff0c \u6211\u8c08\u5230\u4e865G OTA \u6d4b\u8bd5\u6d4b\u91cf\u51b3\u7b56\u6240\u6d89\u53ca\u7684\u4e00\u4e9b\u5173\u952e\u6982\u5ff5\uff0c\u4ee5\u53ca\u8fd9\u4e9b\u5143\u7d20\u5728\u786e\u4fdd 5G OTA \u6d4b\u91cf\u51c6\u786e\u53ef\u9760\u6027\u65b9\u9762\u5982\u4f55\u81f3\u5173\u91cd\u8981\u3002\u4eca\u5929\uff0c\u6211\u4eec\u5c06\u63a2\u7d22\u76ee\u524d\u8f83\u6210\u719f\u7684\u7528\u6237\u8bbe\u5907\uff08UE\uff09\u5c04\u9891\u6d4b\u8bd5\u65b9\u6cd5\uff0c\u5305\u62ec\u76f4\u63a5\u8fdc\u573a \uff08DFF\uff09 \u548c\u95f4\u63a5\u8fdc\u573a \uff08IFF\uff09\uff0c\u540e\u8005\u4e5f\u88ab\u79f0\u4e3a\u7d27\u7f29\u573a\uff08CATR\uff09 \u3002<\/p>\n\n\n\n

\u76f4\u63a5\u8fdc\u573a<\/em><\/strong> <\/em><\/strong>\uff08<\/em><\/strong>DFF<\/em><\/strong>\uff09\u6d4b\u8bd5\u65b9\u6cd5<\/em><\/strong><\/p>\n\n\n\n

\u76f4\u63a5\u8fdc\u573a \uff08DFF\uff09 \u6d4b\u8bd5\u65b9\u6cd5\u4f7f\u7528\u76f8\u5bf9\u7b80\u5355\u7684 OTA \u6697\u5ba4\u8bbe\u8ba1\u8fdb\u884c\u5929\u7ebf\u8f90\u5c04\u6a21\u5f0f\u6d4b\u91cf\u3002\u5728\u6b64\u65b9\u6cd5\u4e2d\uff0c\u6240\u6d4b\u8bd5\u7684\u8bbe\u5907 \uff08DUT\uff09 \u4f4d\u4e8e\u6697\u5ba4\u5185\uff0c DUT \u4e0a\u7684\u5929\u7ebf\u6a21\u5757\u4e0e\u6d4b\u91cf\u5587\u53ed\u5929\u7ebf\u7684\u89c6\u8ddd\uff08LOS\uff09\u5bf9\u9f50\u3002<\/p>\n\n\n\n

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

\u4e3a\u4e86\u5b9e\u73b0\u5168\u9762\u7684\u5929\u7ebf\u9635\u5217\u6d4b\u91cf\uff0cDUT \u901a\u5e38\u88ab\u56fa\u5b9a\u5728\u901a\u8fc7\u8f6f\u4ef6\u63a7\u5236\u7684\u5b9a\u4f4d\u5668\u4e0a\uff0c\u8be5\u5b9a\u4f4d\u5668\u53ef\u4ee5\u5728\u4e24\u4e2a\u72ec\u7acb\u7684\u8f74\uff08\u65b9\u4f4d\u89d2\u548c\u6b63\u9762\u56fe\uff09\u4e0a\u65cb\u8f6c\uff0c\u4ee5\u5b9e\u73b0\u6574\u4e2a 3D \u7403\u4f53\u7684\u91cf\u6d4b\u3002<\/p>\n\n\n\n

\u6b63\u5982\u6211\u5728\u4ee5\u524d\u7684\u6587\u7ae0\u4e2d\u8ba8\u8bba\u7684\u90a3\u6837\uff0c\u4e3a\u4e86\u51c6\u786e\u548c\u53ef\u91cd\u590d\u7684\u6d4b\u91cf\uff0cDUT\u5c06\u88ab\u56fa\u5b9a\u5728\u79bb\u6d4b\u91cf\u5587\u53ed\u5929\u7ebf\u4e00\u5b9a\u6761\u4ef6\u4e0b\u7684\u8fdc\u573a\u8ddd\u79bb\u4f4d\u7f6e\uff08\u4f7f\u7528\u4e0b\u9762\u7684 Fraunhofer \u65b9\u7a0b\u8ba1\u7b97\uff09\uff0c\u8fd9\u5b9e\u9645\u4e0a\u89c4\u5b9a\u5e76\u51b3\u5b9a\u4e86 OTA \u6697\u5ba4\u7684\u6574\u4f53\u5c3a\u5bf8\u3002<\/p>\n\n\n\n

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

\u201cR\u201d\u8868\u793a\u8fdc\u573a\u8ddd\u79bb\u8db3\u4ee5\u4f7f\u7403\u5f62\u6ce2\u8fd1\u4f3c\u4e3a\u5e73\u9762\u6ce2<\/p>\n\n\n\n

\u201cD\u201d\u8868\u793a\u5929\u7ebf\u6a21\u5757\u5c3a\u5bf8<\/p>\n\n\n\n

\u2018\u019b\u2019\u8868\u793a\u6ce2\u957f<\/p>\n\n\n\n

\u6839\u636e 3GPP TR 38.810\uff0c\u5f53DUT\u4e2d\u5929\u7ebf\u6a21\u5757\u7684\u4f4d\u7f6e\u5df2\u7ecf\u786e\u5b9a\u5e76\u4e14\u8f90\u5c04\u5929\u7ebf\u5b54\u5f84\u7684\u5c3a\u5bf8 \u2264\u4e3a 5 \u5398\u7c73\u65f6\uff0c\u5fc5\u987b\u4f7f\u7528\u6b64\u6d4b\u8bd5\u65b9\u6cd5\u3002<\/p>\n\n\n\n

DFF<\/em><\/strong>\u7684\u6311\u6218<\/em><\/strong><\/p>\n\n\n\n

\u867d\u7136 DFF \u6d4b\u8bd5\u65b9\u6cd5\u6613\u4e8e\u5b9e\u73b0\uff0c\u4f46\u662f\u8fd9\u79cd\u65b9\u6cd5\u4e5f\u5b58\u5728\u5c40\u9650\u6027\u3002 <\/p>\n\n\n\n

\u9996\u5148\u4e5f\u662f\u6700\u91cd\u8981\u7684\u662f\u5929\u7ebf\u6a21\u5757\u5c3a\u5bf8 D \u5927\u4e8e 5cm\uff0cOTA \u8def\u5f84\u635f\u5931\u8f83\u9ad8\u3002\u6b63\u5982\u5df2\u7ecf\u8ba8\u8bba\u8fc7\u7684\uff0c\u8fdc\u573a\u8ddd\u79bb\u4e0e\u8f90\u5c04\u5929\u7ebf\u5b54\u5f84\u7684\u5c3a\u5bf8\u6210\u6b63\u6bd4\u3002\u56e0\u6b64\uff0c\u5929\u7ebf\u5b54\u5f84\u8d8a\u5927\uff0c\u968f\u7740\u8fdc\u573a\u8ddd\u79bb\u589e\u52a0\uff0cOTA \u8def\u5f84\u635f\u5931\u8d8a\u9ad8\u3002<\/p>\n\n\n\n

\u4e8c\u662f\u5929\u7ebf\u6a21\u5757\u5c3a\u5bf8 D \u5927\u4e8e 5cm\u7684\u56fa\u5b9a\u8bbe\u5907\u6210\u672c\u8f83\u9ad8\u3002\u5929\u7ebf\u5b54\u5f84\u5c3a\u5bf8\u7684\u589e\u52a0\u9700\u8981\u4f7f\u7528\u66f4\u5927\u7684\u6697\u5ba4\u6765\u63d0\u4f9b\u9002\u5f53\u7684\u8fdc\u573a\u8ddd\u79bb\uff0c\u4ece\u800c\u589e\u52a0\u8bbe\u5907\u7684\u603b\u4f53\u6210\u672c\u548c\u5360\u5730\u9762\u79ef\u3002<\/p>\n\n\n\n

\u7b2c\u4e09\uff0c\u5728\u591a\u4e2a \u6beb\u7c73\u6ce2\u5929\u7ebf\u9635\u5217\u7684\u60c5\u51b5\u4e0b\uff0c\u5bf9 DUT \u8fdb\u884c\u7e41\u7410\u7684\u91cd\u65b0\u5b9a\u4f4d\u3002\u4e3a\u4e86\u907f\u514d\u6d4b\u91cf\u4e0d\u786e\u5b9a\u6027\uff0cDUT \u4e0a\u7684\u5929\u7ebf\u6a21\u5757\u5fc5\u987b\u4e0e\u6d4b\u91cf\u5587\u53ed\u5929\u7ebf\u7684\u5b54\u5f84\u4fdd\u6301\u826f\u597d\u5bf9\u4f4d\u3002\u56e0\u6b64\uff0c\u5982\u679c\u8bbe\u5907\u5d4c\u5165\u4e86\u591a\u4e2a\u5929\u7ebf\u6a21\u5757\uff0c\u5219\u9700\u8981\u5206\u522b\u5b9a\u4f4d\uff0c\u4ee5\u51c6\u786e\u8868\u5f81\u6bcf\u4e2a\u6beb\u7c73\u6ce2\u5929\u7ebf\u6a21\u5757\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n

\u6700\u540e\uff0c\u5728\u6d4b\u91cf\u5e26\u6709\u672a\u77e5\u5929\u7ebf\u6a21\u5757\u5c3a\u5bf8\u548c\u4f4d\u7f6e\u7684 DUT \u65f6\uff0c\u590d\u6742\u6027\u548c\u4e0d\u786e\u5b9a\u6027\u589e\u52a0\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u786e\u5b9a\u9759\u533a\u7684\u6b63\u786e\u5927\u5c0f\uff0c\u5e76\u6709\u8db3\u591f\u7684\u504f\u79fb\u6765\u5bb9\u7eb3\u6574\u4e2a\u8bbe\u5907\u53ef\u80fd\u662f\u5177\u6709\u6311\u6218\u6027\u7684\u3002\u6b64\u5916\uff0c\u8fd9\u8fd8\u4f1a\u5bfc\u81f4\u66f4\u5927\u7684\u6697\u5ba4\u5c3a\u5bf8\u548c OTA \u8def\u5f84\u635f\u5931\u3002<\/p>\n\n\n\n

\u95f4\u63a5\u8fdc\u573a\uff08<\/em><\/strong>IFF<\/em><\/strong>\uff09\u6d4b\u8bd5\u65b9\u6cd5<\/em><\/strong><\/p>\n\n\n\n

\u95f4\u63a5\u8fdc\u573a \uff08IFF\uff09 \u6d4b\u8bd5\u65b9\u6cd5\u4e0d\u53d7 DFF \u6d4b\u8bd5\u65b9\u6cd5\u7684\u76f8\u5173\u9650\u5236\u3002\u8be5\u6280\u672f\u5141\u8bb8\u4ee5\u6bd4 DFF \u65b9\u6cd5\u77ed\u5f97\u591a\u7684\u8ddd\u79bb\u6d4b\u91cf\u5927\u578b\u5929\u7ebf\u9635\u5217\u3002<\/p>\n\n\n\n

\u6d4b\u8bd5\u65b9\u6cd5\u57fa\u4e8e\u7d27\u51d1\u7684\u5929\u7ebf\u6d4b\u8bd5\u88c5\u7f6e\uff08CATR\uff09\uff0c\u4f7f\u7528\u629b\u7269\u9762\u53cd\u5c04\u677f\u521b\u5efa\u8fdc\u573a\u73af\u5883\uff0c\u4ece\u800c\u5c06\u4ece\u7403\u5f62\u6ce2\u8f6c\u6362\u6210\u5e73\u9762\u6ce2\u9001\u5165\u9988\u9001\u5929\u7ebf\uff0c\u4ee5\u8868\u5f81DUT\u5929\u7ebf\u3002<\/p>\n\n\n\n

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

\u5728\u6b64\u65b9\u6cd5\u4e2d\uff0c\u53cd\u5c04\u5668\u7684\u5927\u5c0f\u548c\u7ec8\u7aef\u6210\u54c1\u4f1a\u5f71\u54cd\u6d4b\u91cf\u7684\u64cd\u4f5c\u9891\u7387\u548c\u7cbe\u5ea6 – \u8fb9\u7f18\u9510\u5229\u5ea6\u9650\u5236\u4f4e\u9891\u8303\u56f4\uff0c\u800c\u8868\u9762\u7c97\u7cd9\u5ea6\u5f71\u54cd\u9ad8\u9891\u7387\u3002<\/p>\n\n\n\n

\u4e0e DFF \u4e0d\u540c\uff0c\u8fdc\u573a\u4e0d\u662f DUT \u548c\u6d4b\u91cf\u5587\u53ed\u4e4b\u95f4\u7684\u8ddd\u79bb\uff0c\u800c\u662f\u7126\u8ddd\uff1a\u5373\u9988\u9001\u5929\u7ebf\u548c\u629b\u7269\u9762\u53cd\u5c04\u677f\u4e4b\u95f4\u7684\u8ddd\u79bb\u3002\u5b83\u4f7f\u7528\u4ee5\u4e0b\u65b9\u7a0b\u8fdb\u884c\u8ba1\u7b97\uff1a<\/p>\n\n\n\n

R = 3.5 \u00d7 \u53cd\u5c04\u5668\u5c3a\u5bf8= 3.5 \u00d7 (2D)<\/p>\n\n\n\n

\u4f8b\u5982\uff0c\u5bf9\u4e8e D = 5 \u5398\u7c73\uff0cCATR \u8fdc\u573a\u8ddd\u79bb\u6216\u7126\u8ddd\u4e3a 3.5 \u00d7 2 \u00d7 5 = 35 \u5398\u7c73\uff0c\u8fd9\u5141\u8bb8\u4ee5\u727a\u7272\u9ad8\u7cbe\u5ea6\u629b\u7269\u9762\u53cd\u5c04\u677f\u4e3a\u4ee3\u4ef7\u5efa\u7acb\u66f4\u7d27\u51d1\u7684 OTA \u6697\u5ba4\u3002<\/p>\n\n\n\n

\u8be5\u6280\u672f\u8bc1\u660e\u5bf9\u5728 DUT \u4e0a\u6beb\u7c73\u6ce2\u5929\u7ebf\u6a21\u5757\u7684\u5c3a\u5bf8\u548c\u4f4d\u7f6e\u672a\u77e5\u7684\u8bbe\u5907\u4e0a\u8fdb\u884c\u6d4b\u91cf\u975e\u5e38\u6709\u5229\u3002\u8fd9\u662f\u56e0\u4e3a\u5de8\u5927\u7684\u9759\u533a\u53ef\u4ee5\u8986\u76d6 DUT \u7684\u6574\u4e2a\u5916\u5f62\uff0c\u65e0\u9700\u91cd\u65b0\u5b9a\u4f4d\u3002\u6b64\u5916\uff0c\u5bf9\u4e8e D >=5cm \u7684\u8bbe\u5907\uff0cCATR \u5728\u6bd4 DFF \u6697\u5ba4\u77ed\u5f97\u591a\u7684\u8ddd\u79bb\u5185\u521b\u5efa\u8fdc\u573a\u73af\u5883\uff0c\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11 OTA \u8def\u5f84\u635f\u8017\uff0c\u5e76\u786e\u4fdd\u66f4\u597d\u7684\u4fe1\u566a\u6bd4 \uff08SNR\uff09\u3002<\/p>\n\n\n\n

\u867d\u7136\uff0c\u8fd9\u9879\u6280\u672f\u542c\u8d77\u6765\u5f88\u5bb9\u6613\u5b9e\u73b0\uff0c\u4f46\u6697\u5ba4\u7684\u5b9e\u9645\u548c\u629b\u7269\u9762\u53cd\u5c04\u677f\u7684\u7cbe\u5ea6\u6210\u4e3a\u5b9e\u73b0\u76ee\u6807\u7684\u6311\u6218\u3002<\/p>\n\n\n\n

\u5728<\/em><\/strong> DFF <\/em><\/strong>\u6216<\/em><\/strong> CATR <\/em><\/strong>\u6697\u5ba4\u4e4b\u95f4\u8fdb\u884c\u9009\u62e9<\/em><\/strong><\/em><\/strong><\/p>\n\n\n\n

DFF \u548c CATR \u6697\u5ba4\u4e4b\u95f4\u7684\u9009\u62e9\u53d6\u51b3\u4e8e DUT\u529f\u7387\u7b49\u7ea7\u548c\u5929\u7ebf\u914d\u7f6e\uff0c\u5e76\u4f1a\u663e\u8457\u5f71\u54cd OTA \u8def\u5f84\u635f\u5931\u548c\u6d4b\u8bd5\u6210\u672c\u3002\u5982\u4e0b\u6240\u793a\uff0c\u5bf9\u4e8e\u7279\u5b9a\u9891\u7387\uff0c5cm \u7684\u5b54\u5f84\u5c3a\u5bf8\u662f\u5206\u6c34\u5cad\uff0c\u8d85\u8fc75cm, DFF \u6697\u5ba4\u4e2d\u89c2\u6d4b\u5230\u7684\u8def\u5f84\u635f\u5931\u6bd4 CATR \u6697\u5ba4\u4e2d\u89c2\u6d4b\u5230\u7684\u8def\u5f84\u635f\u5931\u5927\u5f97\u591a\u3002<\/p>\n\n\n\n

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

\u8fd9\u610f\u5473\u7740 DFF OTA \u6697\u5ba4\u66f4\u9002\u5408\u5c0f\u578b\u624b\u6301\u4ea7\u54c1\uff0c\u5982\u624b\u673a\u6216\u7b14\u8bb0\u672c\u7535\u8111\uff0c\u800c CATR \u6697\u5ba4\u66f4\u9002\u5408\u8f83\u5927\u7684\u5929\u7ebf\u9635\u5217\u6216 DUT \u5916\u5f62\u3002<\/p>\n\n\n\n

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