{"id":94710,"date":"2024-06-29T13:43:24","date_gmt":"2024-06-29T05:43:24","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=94710"},"modified":"2024-06-29T13:43:28","modified_gmt":"2024-06-29T05:43:28","slug":"lbmsxdbmm","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/94710.html","title":{"rendered":"LDPC\u7f16\u7801\u662f\u4fe1\u9053\u7f16\u7801\u5417"},"content":{"rendered":"\n<p>\u3000\u3000<strong>LDPC\u7f16\u7801\u662f\u4e00\u79cd\u4fe1\u9053\u7f16\u7801\u3002LDPC\u7801(Low-Density Parity-Check Code)\u662f\u4e00\u79cd\u5177\u6709\u7a00\u758f\u6821\u9a8c\u77e9\u9635\u7684\u7ebf\u6027\u5206\u7ec4\u7ea0\u9519\u7801\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u901a\u4fe1\u7cfb\u7edf\u4e2d\u4ee5\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u3002<\/strong>\u6b64\u5916\uff0cLDPC\u7801\u57285G\u901a\u4fe1\u6807\u51c6\u4e2d\u4e5f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4f5c\u4e3a\u4fe1\u9053\u7f16\u7801\u6280\u672f\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u786e\u8ba4LDPC\u7f16\u7801\u786e\u5b9e\u662f\u4fe1\u9053\u7f16\u7801\u7684\u4e00\u79cd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 LDPC\u7f16\u7801\u7684\u5177\u4f53\u5de5\u4f5c\u539f\u7406\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000LDPC(\u4f4e\u5bc6\u5ea6\u6821\u9a8c\u7801)\u7f16\u7801\u7684\u5177\u4f53\u5de5\u4f5c\u539f\u7406\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u751f\u6210\u77e9\u9635<\/strong>\uff1aLDPC\u7801\u7684\u7f16\u7801\u8fc7\u7a0b\u9996\u5148\u9700\u8981\u751f\u6210\u4e00\u4e2a\u7a00\u758f\u77e9\u9635\uff0c\u8fd9\u4e2a\u77e9\u9635\u7528\u4e8e\u5c06\u4fe1\u606f\u4f4d\u8fdb\u884c\u968f\u673a\u5206\u5e03\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7f16\u7801<\/strong>\uff1a\u5728\u751f\u6210\u77e9\u9635\u7684\u57fa\u7840\u4e0a\uff0c\u901a\u8fc7\u7f16\u7801\u5668\u5bf9\u4fe1\u606f\u4f4d\u8fdb\u884c\u7f16\u7801\u3002\u7f16\u7801\u8fc7\u7a0b\u4e2d\uff0c\u4fe1\u606f\u4f4d\u4e0e\u751f\u6210\u77e9\u9635\u4e2d\u7684\u884c\u76f8\u4e58\uff0c\u5f97\u5230\u6821\u9a8c\u4f4d\u3002\u8fd9\u6837\uff0c\u6700\u7ec8\u7684\u7f16\u7801\u8f93\u51fa\u5305\u62ec\u4fe1\u606f\u4f4d\u548c\u6821\u9a8c\u4f4d\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u8bd1\u7801\u7b97\u6cd5<\/strong>\uff1aLDPC\u7801\u7684\u8bd1\u7801\u7b97\u6cd5\u662f\u4e00\u79cd\u57fa\u4e8e\u7a00\u758f\u77e9\u9635\u7684\u5e76\u884c\u8fed\u4ee3\u8bd1\u7801\u7b97\u6cd5\u3002Gallager\u5728\u5176\u535a\u58eb\u8bba\u6587\u4e2d\u63d0\u51fa\u4e86\u4e24\u79cd\u57fa\u672c\u7684\u8bd1\u7801\u7b97\u6cd5\uff1a\u786c\u5224\u51b3\u4f4d\u7ffb\u8f6c\u8bd1\u7801\u7b97\u6cd5\u548c\u8f6f\u5224\u51b3\u6982\u7387\u8bd1\u7801\u7b97\u6cd5\u3002\u786c\u5224\u51b3\u4f4d\u7ffb\u8f6c\u8bd1\u7801\u7b97\u6cd5\u867d\u7136\u590d\u6742\u5ea6\u8f83\u4f4e\uff0c\u4f46\u4e0d\u80fd\u8fbe\u5230\u6700\u4f73\u6027\u80fd;\u800c\u8f6f\u5224\u51b3\u6982\u7387\u8bd1\u7801\u7b97\u6cd5\u5219\u80fd\u591f\u66f4\u597d\u5730\u903c\u8fd1\u4fe1\u9053\u5bb9\u91cf\u9650\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u8fed\u4ee3\u8bd1\u7801<\/strong>\uff1aLDPC\u7801\u7684\u8bd1\u7801\u8fc7\u7a0b\u662f\u4e00\u4e2a\u8fed\u4ee3\u8fc7\u7a0b\uff0c\u8bd1\u7801\u5668\u4f1a\u4e0d\u65ad\u66f4\u65b0\u5176\u5bf9\u6bcf\u4e2a\u6bd4\u7279\u7684\u4f30\u8ba1\u503c\uff0c\u76f4\u5230\u6ee1\u8db3\u7ec8\u6b62\u6761\u4ef6\u6216\u8fbe\u5230\u6700\u5927\u8fed\u4ee3\u6b21\u6570\u3002\u8fd9\u79cd\u8fed\u4ee3\u8bd1\u7801\u7b97\u6cd5\u5177\u6709\u4f4e\u590d\u6742\u5ea6\u7684\u4f18\u70b9\uff0c\u5e76\u4e14\u7531\u4e8e\u5176\u7ed3\u6784\u5e76\u884c\u7684\u7279\u70b9\uff0c\u5728\u786c\u4ef6\u5b9e\u73b0\u4e0a\u6bd4\u8f83\u5bb9\u6613\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u6027\u80fd\u5206\u6790<\/strong>\uff1aLDPC\u7801\u5728\u5220\u9664\u4fe1\u9053\u4e0b\u7684\u7ea0\u9519\u6027\u80fd\u5f97\u5230\u4e86\u8be6\u7ec6\u5206\u6790\uff0c\u8868\u660e\u5176\u5728\u957f\u7801\u957f\u60c5\u51b5\u4e0b\u6027\u80fd\u5c24\u4e3a\u660e\u663e\uff0c\u80fd\u591f\u903c\u8fd1\u9999\u519c\u9650\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000LDPC\u7f16\u7801\u7684\u5de5\u4f5c\u539f\u7406\u5305\u62ec\u751f\u6210\u7a00\u758f\u77e9\u9635\u3001\u4fe1\u606f\u4f4d\u4e0e\u6821\u9a8c\u4f4d\u7684\u7f16\u7801\u3001\u57fa\u4e8e\u7a00\u758f\u77e9\u9635\u7684\u8fed\u4ee3\u8bd1\u7801\u7b97\u6cd5\u4ee5\u53ca\u6027\u80fd\u5206\u6790\u7b49\u65b9\u9762\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 LDPC\u7f16\u7801\u57285G\u901a\u4fe1\u6807\u51c6\u4e2d\u7684\u5e94\u7528\u6848\u4f8b\u6709\u54ea\u4e9b?<\/h2>\n\n\n\n<p>\u3000\u3000LDPC\u7f16\u7801\u57285G\u901a\u4fe1\u6807\u51c6\u4e2d\u7684\u5e94\u7528\u6848\u4f8b\u4e3b\u8981\u96c6\u4e2d\u5728\u6570\u636e\u4fe1\u9053\u7684\u7f16\u7801\u65b9\u6848\u4e0a\u3002\u6839\u636e\u73b0\u6709\u7684\u7814\u7a76\u548c\u6807\u51c6\uff0cLDPC\u7801\u5df2\u7ecf\u88ab\u786e\u5b9a\u4e3a5G\u7cfb\u7edf\u4e2d\u6570\u636e\u4fe1\u9053\u7684\u7f16\u7801\u65b9\u6848\u3002\u5177\u4f53\u6765\u8bf4\uff0cLDPC\u7801\u57285G NR(New Radio)\u7cfb\u7edf\u4e2d\u5f97\u5230\u4e86\u5e7f\u6cdb\u5e94\u7528\uff0c\u7279\u522b\u662f\u5728eMBB(\u589e\u5f3a\u79fb\u52a8\u5bbd\u5e26)\u573a\u666f\u4e2d\u3002<\/p>\n\n\n\n<p>\u3000\u3000LDPC\u7801\u57285G NR\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u7ea0\u9519\u7f16\u7801\u6280\u672f<\/strong>\uff1aLDPC\u7801\u662f\u4fdd\u969c\u6570\u636e\u4f20\u8f93\u53ef\u9760\u6027\u7684\u5173\u952e\u6280\u672f\u4e4b\u4e00\uff0c\u80fd\u591f\u6709\u6548\u5730\u7ea0\u6b63\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u9519\u8bef\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9ad8\u6570\u636e\u901f\u7387\u4e1a\u52a1\u7684\u4f20\u8f93<\/strong>\uff1a\u7531\u4e8eLDPC\u7801\u53ef\u4ee5\u8fbe\u5230\u66f4\u9ad8\u7684\u8bd1\u7801\u541e\u5410\u91cf\u548c\u66f4\u4f4e\u7684\u8bd1\u7801\u65f6\u5ef6\uff0c\u56e0\u6b64\u5b83\u80fd\u591f\u66f4\u597d\u5730\u9002\u5e94\u9ad8\u6570\u636e\u901f\u7387\u4e1a\u52a1\u7684\u4f20\u8f93\u9700\u6c42\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u786c\u4ef6\u5b9e\u73b0<\/strong>\uff1a\u4e3a\u4e86\u6ee1\u8db35G\u6807\u51c6\u5bf9\u4f4e\u5ef6\u65f6\u548c\u7f16\u7801\u7075\u6d3b\u6027\u7684\u8981\u6c42\uff0c\u7814\u7a76\u8005\u63d0\u51fa\u4e86\u9ad8\u5e76\u884c\u5ea6\u7684LDPC\u7801\u7f16\u7801\u7b97\u6cd5\uff0c\u5e76\u8bbe\u8ba1\u4e86\u76f8\u5e94\u7684\u786c\u4ef6\u7ed3\u6784\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f18\u5316\u8bbe\u8ba1<\/strong>\uff1a\u57285G NR\u7cfb\u7edf\u4e2d\uff0cQC-LDPC\u7801\u7684\u52a0\u5bc6\u548c\u89e3\u5bc6\u9700\u8981\u8fdb\u884c\u591a\u9879\u4f18\u5316\uff0c\u4ee5\u8fbe\u5230\u9ad8\u5bb9\u91cf\u548c\u4f4e\u5ef6\u8fdf\u7684\u6807\u51c6\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 LDPC\u7f16\u7801\u4e0e\u5176\u4ed6\u4fe1\u9053\u7f16\u7801\u6280\u672f(\u5982LDPC\u7801)\u7684\u6bd4\u8f83\u4f18\u52bf\u5728\u54ea\u91cc?<\/h2>\n\n\n\n<p>\u3000\u3000LDPC\u7f16\u7801\u5728\u4fe1\u9053\u7f16\u7801\u6280\u672f\u4e2d\u5177\u6709\u663e\u8457\u7684\u4f18\u52bf\uff0c\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u9ad8\u6548\u7684\u89e3\u7801\u6027\u80fd<\/strong>\uff1aLDPC\u7801\u901a\u8fc7\u7a00\u758f\u5947\u5076\u6821\u9a8c\u77e9\u9635\u5b9a\u4e49\uff0c\u5176\u975e\u96f6\u5143\u7d20\u6570\u91cf\u8fdc\u5c11\u4e8e\u96f6\u5143\u7d20\u6570\u91cf\uff0c\u8fd9\u4f7f\u5f97\u5b83\u5728\u5b58\u50a8\u548c\u89e3\u7801\u65f6\u66f4\u52a0\u9ad8\u6548\u3002\u6b64\u5916\uff0cLDPC\u7801\u7684\u8bd1\u7801\u7b97\u6cd5\u57fa\u4e8e\u7a00\u758f\u77e9\u9635\u7684\u5e76\u884c\u8fed\u4ee3\u8bd1\u7801\u7b97\u6cd5\uff0c\u8fd0\u7b97\u91cf\u4f4e\u4e8eTurbo\u7801\u8bd1\u7801\u7b97\u6cd5\uff0c\u5e76\u4e14\u7531\u4e8e\u7ed3\u6784\u5e76\u884c\u7684\u7279\u70b9\uff0c\u5728\u786c\u4ef6\u5b9e\u73b0\u4e0a\u6bd4\u8f83\u5bb9\u6613\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u63a5\u8fd1\u9999\u519c\u6781\u9650\u7684\u7ea0\u9519\u80fd\u529b<\/strong>\uff1aLDPC\u7801\u5728\u63a5\u8fd1\u9999\u519c\u6781\u9650\u7684\u60c5\u51b5\u4e0b\uff0c\u5176\u6027\u80fd\u8868\u73b0\u5c24\u4e3a\u7a81\u51fa\uff0c\u80fd\u591f\u63d0\u4f9b\u8f83\u9ad8\u7684\u4f20\u8f93\u53ef\u9760\u6027\u3002\u8fd9\u610f\u5473\u7740\u5728\u4f4e\u4fe1\u566a\u6bd4\u7684\u901a\u4fe1\u73af\u5883\u4e2d\uff0cLDPC\u7801\u4f9d\u7136\u53ef\u4ee5\u53d6\u5f97\u8f83\u9ad8\u7684\u4f20\u8f93\u53ef\u9760\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f4e\u590d\u6742\u5ea6\u7684\u89e3\u7801\u7b97\u6cd5<\/strong>\uff1aLDPC\u7801\u7684\u89e3\u7801\u7b97\u6cd5\u76f8\u5bf9\u4e8e\u5176\u4ed6\u7ea0\u9519\u7801\u6765\u8bf4\u5177\u6709\u8f83\u4f4e\u7684\u590d\u6742\u5ea6\u3002\u8fd9\u79cd\u4f4e\u590d\u6742\u5ea6\u4f7f\u5176\u5728\u5927\u5bb9\u91cf\u901a\u4fe1\u5e94\u7528\u4e2d\u66f4\u5177\u4f18\u52bf\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9ad8\u5bc6\u5ea6\u8bef\u5dee\u6821\u6b63\u80fd\u529b<\/strong>\uff1aLDPC\u7801\u7279\u522b\u9002\u7528\u4e8e\u4fee\u590d\u5bc6\u96c6\u9519\u8bef\u6a21\u5f0f\uff0c\u4f8b\u5982\u90a3\u4e9b\u7531\u4e8e\u5b58\u50a8\u5668\u5143\u4ef6\u7684\u7269\u7406\u9650\u5236\u5f15\u8d77\u7684\u591a\u4f4d\u6545\u969c\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u63d0\u9ad8\u901a\u4fe1\u8d28\u91cf<\/strong>\uff1aLDPC\u7f16\u7801\u589e\u76ca\u53ef\u4ee5\u6709\u6548\u5730\u6291\u5236\u4fe1\u9053\u8bef\u7801\u7387\uff0c\u4ece\u800c\u63d0\u9ad8\u901a\u4fe1\u8d28\u91cf\u3002\u5b83\u53ef\u4ee5\u901a\u8fc7\u63d0\u4f9b\u66f4\u9ad8\u7684\u4fe1\u566a\u6bd4\u6765\u6539\u5584\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 LDPC\u7f16\u7801\u5728\u5b9e\u9645\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u6027\u80fd\u8868\u73b0\u5982\u4f55?<\/h2>\n\n\n\n<p>\u3000\u3000LDPC\u7f16\u7801\u5728\u5b9e\u9645\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u6027\u80fd\u8868\u73b0\u975e\u5e38\u51fa\u8272\uff0c\u5177\u6709\u4ee5\u4e0b\u51e0\u4e2a\u663e\u8457\u7279\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u903c\u8fd1\u9999\u519c\u9650\u7684\u6027\u80fd<\/strong>\uff1aLDPC\u7801\u662f\u4e00\u79cd\u57fa\u4e8e\u7a00\u758f\u6821\u9a8c\u77e9\u9635\u7684\u7ebf\u6027\u5206\u7ec4\u7ea0\u9519\u7801\uff0c\u91c7\u7528\u4f4e\u590d\u6742\u5ea6\u7684\u8fed\u4ee3\u8bd1\u7801\u7b97\u6cd5\uff0c\u5176\u6027\u80fd\u53ef\u4ee5\u903c\u8fd1\u9999\u519c\u6781\u9650\u3002\u8fd9\u610f\u5473\u7740\u5728\u7406\u8bba\u4e0a\uff0cLDPC\u7801\u80fd\u591f\u8fbe\u5230\u6700\u4f73\u7684\u7ea0\u9519\u6548\u679c\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9ad8\u6548\u7684\u7ea0\u9519\u6027\u80fd<\/strong>\uff1a\u57285G\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0cLDPC\u7f16\u7801\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5b9e\u73b0\u9ad8\u6548\u7684\u7ea0\u9519\u6027\u80fd\u3002\u901a\u8fc7\u6784\u5efa\u7a00\u758f\u6821\u9a8c\u77e9\u9635\uff0cLDPC\u7f16\u7801\u80fd\u591f\u6709\u6548\u5730\u7ea0\u6b63\u9519\u8bef\uff0c\u63d0\u9ad8\u901a\u4fe1\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9002\u7528\u4e8e\u591a\u79cd\u901a\u4fe1\u6280\u672f<\/strong>\uff1aLDPC\u7f16\u7801\u4e0d\u4ec5\u5728OFDM\u7cfb\u7edf\u4e2d\u8868\u73b0\u51fa\u8272\uff0c\u8fd8\u5728\u5176\u4ed6\u591a\u79cd\u901a\u4fe1\u6280\u672f\u4e2d\u5f97\u5230\u4e86\u5e94\u7528\u3002\u4f8b\u5982\uff0c\u5728\u6b63\u4ea4\u9891\u5206\u590d\u7528(OFDM)\u7cfb\u7edf\u3001\u5149\u901a\u4fe1\u7cfb\u7edf\u4ee5\u53ca\u8df3\u9891\u6297\u5e72\u6270\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0cLDPC\u7f16\u7801\u90fd\u5c55\u73b0\u4e86\u4f18\u5f02\u7684\u6027\u80fd\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u786c\u4ef6\u5b9e\u73b0\u7684\u4fbf\u5229\u6027<\/strong>\uff1aLDPC\u7801\u7684\u5168\u5e76\u884c\u8fed\u4ee3\u8bd1\u7801\u7ed3\u6784\u4f7f\u5f97\u8bd1\u7801\u590d\u6742\u5ea6\u7ebf\u6027\u589e\u957f\uff0c\u4fbf\u4e8e\u786c\u4ef6\u5b9e\u73b0\u3002\u8fd9\u4f7f\u5f97LDPC\u7f16\u7801\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u66f4\u52a0\u7075\u6d3b\u548c\u9ad8\u6548\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4eff\u771f\u9a8c\u8bc1<\/strong>\uff1a\u591a\u9879\u7814\u7a76\u901a\u8fc7\u4eff\u771f\u5206\u6790\u4e86LDPC\u7f16\u7801\u5728\u4e0d\u540c\u4fe1\u9053\u6761\u4ef6\u4e0b\u7684\u6027\u80fd\u8868\u73b0\u3002\u4f8b\u5982\uff0c\u5728\u745e\u5229\u8870\u843d\u4fe1\u9053\u4e2d\uff0cLDPC\u7f16\u7801\u901a\u8fc7\u6539\u8fdb\u7684\u548c\u79ef\u7b97\u6cd5\uff0c\u663e\u8457\u63d0\u9ad8\u4e86\u8bef\u6bd4\u7279\u7387(BER)\u6027\u80fd\u3002\u6b64\u5916\uff0c\u57fa\u4e8e\u6b63\u4ea4\u76f8\u79fb\u952e\u63a7(QPSK)\u8c03\u5236\u7684\u7269\u7406\u5c42\u7f51\u7edc\u7f16\u7801\u4e0eLDPC\u7801\u8054\u5408\u901a\u4fe1\u7cfb\u7edf\u4e5f\u901a\u8fc7\u4eff\u771f\u9a8c\u8bc1\u4e86\u5176\u4f18\u5f02\u7684BER\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<h2 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