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\u3000\u3000\u524d\u5411\u7ea0\u9519\u7f16\u7801(Forward Error Correction\uff0cFEC)\u662f\u4e00\u79cd\u7ea0\u9519\u7f16\u7801\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u5728\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u81ea\u52a8\u68c0\u6d4b\u548c\u7ea0\u6b63\u9519\u8bef\u3002FEC\u6280\u672f\u901a\u5e38\u91c7\u7528\u6d77\u660e\u7801\u3001RS\u7801\u548cBCH\u7801\u7b49\u7f16\u7801\u65b9\u5f0f\u3002\u5176\u4e2d\uff0c\u6d77\u660e\u7801\u662f\u4e00\u79cd\u6700\u4e3a\u7b80\u5355\u7684FEC\u7801\uff0c\u5b83\u53ef\u4ee5\u68c0\u6d4b\u5e76\u7ea0\u6b63\u5355\u6bd4\u7279\u9519\u8bef\u3002\u800cRS\u7801\u548cBCH\u7801\u5219\u53ef\u4ee5\u68c0\u6d4b\u548c\u7ea0\u6b63\u591a\u6bd4\u7279\u9519\u8bef\u3002<\/p>\n\n\n\n
\u3000\u3000\u5377\u79ef\u7801(Convolutional Code)\u662f\u4e00\u79cd\u7ebf\u6027\u65f6\u53d8\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u5c06\u8f93\u5165\u7684\u6bd4\u7279\u5e8f\u5217\u8f6c\u6362\u4e3a\u8f93\u51fa\u7684\u6bd4\u7279\u5e8f\u5217\u3002\u5377\u79ef\u7801\u7684\u7f16\u7801\u548c\u89e3\u7801\u90fd\u662f\u901a\u8fc7\u7ebf\u6027\u65f6\u53d8\u6ee4\u6ce2\u5668\u5b9e\u73b0\u7684\u3002\u5377\u79ef\u7801\u7684\u4e00\u4e2a\u91cd\u8981\u53c2\u6570\u662f\u7ea6\u675f\u957f\u5ea6\uff0c\u5b83\u8868\u793a\u7f16\u7801\u5668\u7684\u8bb0\u5fc6\u957f\u5ea6\uff0c\u901a\u5e38\u7ea6\u675f\u957f\u5ea6\u8d8a\u5927\uff0c\u5377\u79ef\u7801\u7684\u7ea0\u9519\u6027\u80fd\u8d8a\u597d\u3002<\/p>\n\n\n\n
\u3000\u3000\u5757\u7801(Block Code)\u662f\u4e00\u79cd\u57fa\u4e8e\u5206\u7ec4\u7684\u7f16\u7801\u65b9\u5f0f\uff0c\u5b83\u5c06\u6570\u636e\u5206\u6210\u56fa\u5b9a\u957f\u5ea6\u7684\u5757\uff0c\u5e76\u5bf9\u6bcf\u4e2a\u5757\u8fdb\u884c\u7f16\u7801\u3002\u5757\u7801\u901a\u5e38\u91c7\u7528\u6d77\u660e\u7801\u3001RS\u7801\u548cBCH\u7801\u7b49\u7f16\u7801\u65b9\u5f0f\u3002\u4e0e\u524d\u5411\u7ea0\u9519\u7f16\u7801\u4e0d\u540c\u7684\u662f\uff0c\u5757\u7801\u9700\u8981\u4e00\u6b21\u6027\u5bf9\u6574\u4e2a\u6570\u636e\u5757\u8fdb\u884c\u7f16\u7801\u548c\u89e3\u7801\u3002\u5757\u7801\u7684\u4e00\u4e2a\u91cd\u8981\u53c2\u6570\u662f\u7801\u957f\uff0c\u5b83\u8868\u793a\u6bcf\u4e2a\u7f16\u7801\u5757\u7684\u6bd4\u7279\u6570\uff0c\u901a\u5e38\u7801\u957f\u8d8a\u957f\uff0c\u5757\u7801\u7684\u7ea0\u9519\u6027\u80fd\u8d8a\u597d\u3002<\/p>\n\n\n\n
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