{"id":1080,"date":"2018-09-22T01:36:05","date_gmt":"2018-09-22T01:36:05","guid":{"rendered":""},"modified":"2018-09-22T09:36:41","modified_gmt":"2018-09-22T01:36:41","slug":"%e6%b5%85%e6%9e%90fpga%e5%92%8c%e4%b8%93%e7%94%a8dsp%e7%9a%84%e5%8e%9f%e7%90%86%e5%8f%8a%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1080","title":{"rendered":"\u6d45\u6790FPGA\u548c\u4e13\u7528DSP\u7684\u539f\u7406\u53ca\u5e94\u7528"},"content":{"rendered":"

\u3000\u3000FIR<\/span>\u6ee4\u6ce2\u5668\uff08\u56fe1\uff09\u5b58\u50a8n\u6570\u636e\u5355\u5143\u7cfb\u5217\uff0c\u6bcf\u4e2a\u6570\u636e\u5355\u5143\u5ef6\u8fdf\u4e00\u4e2a\u9644\u52a0\u5468\u671f\u3002\u901a\u5e38\uff0c\u8fd9\u4e9b\u6570\u636e\u5355\u5143\u79f0\u4e4b\u4e3a\u5206\u652f\u3002\u6bcf\u4e2a\u5206\u652f\u4e0e\u7cfb\u6570\u76f8\u4e58\uff0c\u5176\u7ed3\u679c\u6c42\u548c\u4ea7\u751f\u8f93\u51fa\u3002\u67d0\u4e9b\u65b9\u6cd5\u5e76\u884c\u6267\u884c\u6240\u6709\u7684\u4e58\u6cd5\u3002\u66f4\u4e00\u822c\u7684\u65b9\u6cd5\u662f\u5206\u4e3aN\u7ea7\uff0c\u7528\u7d2f\u52a0\u5668\u4ece\u4e00\u7ea7\u5230\u4e0b\u4e00\u7ea7\u4f20\u9012\u7ed3\u679c\u3002\u8fd9\u4e9b\u5b9e\u73b0\u65b9\u6cd5\u7528\u529f\u80fd\u8d44\u6e90\u6362\u53d6\u901f\u5ea6\uff0c\u53d6N\u4e2a\u8ba1\u7b97\u7ea7\u5e76\u9700\u8981n\/N\u4e2a\u4e58\u6cd5\u5668\u3002\u6839\u636e\u7cfb\u6570\u662f\u9759\u6001\u8fd8\u662f\u52a8\u6001\u4ee5\u53ca\u7cfb\u6570\u503c\u8bbe\u8ba1\uff0c\u6709\u4e0d\u5c11\u5176\u4ed6\u901a\u7528\u7684\u8bbe\u8ba1\u6700\u4f73\u5316\u65b9\u6cd5\u3002<\/span>

\n\u3000\u3000<\/span><\/p>\n

\n\t<\/p>\n

\u3000\u3000\u56fe1 \u5178\u578bFIR\u6ee4\u6ce2\u5668\u7684\u5b9e\u73b0<\/span>

\n\u3000\u3000\u5b9e\u73b0\u65b9\u6cd5<\/span>

\n\u3000\u3000\u4ece\u56fe\u50cf\u538b\u7f29\u5230\u786e\u5b9a\u6570\u636e\u53d6\u6837\u7684\u9891\u8c31\u6210\u5206\uff0c\u5728\u4e0d\u540c\u7684\u5e94\u7528\u4e2d\u90fd\u7528FFT\u3002\u5b9e\u73b0FFT\u6709\u591a\u79cd\u65b9\u6cd5\u3002\u6700\u901a\u7528\u7684\u65b9\u6cd5\u662f\u901a\u7528Cooley-Tukey\u65f6\u95f4\u62bd\u53d6\uff0c\u628aFFT\u5206\u89e3\u6210\u82e5\u5e72\u66f4\u5c0f\u7684FFT\u3002\u6700\u7b80\u5355\u7684\u5b9e\u73b0\u65b9\u6cd5\u662f\u7528Radix-2\u8776\u5f62\u5355\u5143\uff08\u56fe2\uff09\uff0c\u5176\u8f93\u5165\u6570\u636e\u5fc5\u987b\u4f20\u9012\u500d\u6570\u3002\u8fd9\u79cd\u8ba1\u7b97\u6982\u5ff5\u4e0a\u662f\u7b80\u5355\u7684;\u7136\u800c\uff0c\u56fe\u5de6\u8fb9\u6240\u6709\u7684\u4e58\u548c\u52a0\u662f\u7528\u590d\u6570\u8ba1\u7b97\u7684\uff0c\u6240\u9700\u8981\u7684\u4e58\u548c\u52a0\u7684\u5b9e\u6570\u662f\u66f4\u590d\u6742\u7684\u95ee\u9898\uff08\u5982\u56fe\u53f3\u8fb9\u6240\u793a\uff09\u3002<\/span>

\n\u3000\u3000IIR\u6ee4\u6ee4\u5668\u9664\u5f15\u5165\u53cd\u9988\u901a\u8def\u5916\uff0c\u5b83\u7c7b\u4f3c\u4e8eFIR\u6ee4\u6ce2\u5668\u3002\u8fd9\u4e9b\u53cd\u9988\u901a\u8def\u4f7fIIR\u6ee4\u6ce2\u5668\u7684\u8bbe\u8ba1\u548c\u5206\u6790\u6bd4FIR\u66f4\u590d\u6742\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u76f8\u540c\u7845\u9762\u79ef\uff0cIIR\u65b9\u6cd5\u53ef\u63d0\u4f9b\u66f4\u5f3a\u7684\u6ee4\u6ce2\u5668\u3002\u5c3d\u7ba1\u6709\u51e0\u79cdIIR\u7ed3\u6784\uff0c\u4f46\u662f\uff0c\u4e00\u79cd\u901a\u7528\u7684\u7ed3\u6784\u662f\u75282\u9636\u56db\u6b21\u65b9\u7ed3\u6784\uff08\u56fe3\uff09\u3002<\/span>

\n\u3000\u3000\u5f88\u591a\u5e94\u7528\u662f\u7528\u6df7\u9891\u5668\u6765\u53d8\u6362\u4fe1\u53f7\u9891\u7387\u3002\u6982\u5ff5\u4e0a\uff0c\u53ef\u7528\u5355\u4e2a\u4e58\u6cd5\u5668\uff0c\u800c\u5728\u6570\u5b57\u5e94\u7528\u4e2d\uff0c\u7528\u590d\u6570\u5f62\u5f0f\u8868\u793a\u4e0d\u5c11\u4f18\u70b9\u3002\u6700\u4e00\u822c\u7684\u5f62\u5f0f\u662f\u4fe1\u53f7\u8868\u793a\u662f\u4e3aI\u548cQ\u5206\u91cf\u3002<\/span>

\n\u3000<\/span>\u3000DSP\u9009\u62e9<\/strong>

\n\u3000\u3000\u505a\u4e3a\u8fd9\u4e9b\u901a\u7528\u529f\u80fd\u5e94\u7528\uff0c\u5927\u591a\u6570DSP\u5e94\u7528\u7684\u6838\u5fc3\u662f\u4e58\u3001\u52a0\u3001\u51cf\u6216\u7d2f\u52a0\u3002\u901a\u7528DSP<\/span>\u82af\u7247\u4e0e\u901a\u7528<\/span>\u5fae\u5904\u7406\u5668\u7ed3\u5408\u80fd\u6709\u6548\u5730\u5b9e\u73b0\u8fd9\u4e9b\u529f\u80fd\u3002\u4e58\u6cd5\u5668\u6570\u91cf\u901a\u5e381“4\u4e2a\uff0c\u800c\u5fae<\/span>\u5904\u7406\u5668\u901a\u8fc7\u4e58\u548c\u5176\u4ed6\u529f\u80fd\u5b9a\u5e8f\u901a\u8fc7\u7684\u6570\u636e\uff0c\u5b58\u50a8\u4e2d\u95f4\u7ed3\u679c\u5728<\/span>\u5b58\u50a8\u5668\u6216\u7d2f\u52a0\u5668\u3002\u4e3b\u8981\u9760\u63d0\u9ad8\u4e58\u6cd5\u6240\u7528\u7684\u65f6\u949f\u901f\u5ea6\u6765\u63d0\u9ad8\u6027\u80fd\u3002\u5178\u578b\u65f6\u949f\u901f\u5ea6\u4e3a\u51e0\u5341MHz”1GHz\u3002\u6027\u80fd\u7528\u6bcf\u79d2MMAC\uff08\u767e\u4e07\u4e58\u7d2f\u52a0\uff09\u5ea6\u91cf\uff0c\u5178\u578b\u503c10“4000\u3002<\/span>

\n\u3000\u3000\u9700\u8981\u8f83\u4f73\u529f\u80fd\u5fc5\u987b\u5e76\u8054\u7ec4\u5408\u591a\u4e2aDSP\u5f15\u64ce\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u4e3b\u8981\u4f18\u70b9\u662f\u76f4\u63a5\u5b9e\u73b0\u7528\u9ad8\u7ea7\u7f16\u7a0b\u8bed\u8a00\uff08\u5982C\u8bed\u8a00\uff09\u7f16\u5199\u7684\u7b97\u6cd5\u3002<\/span>

\n\u3000\u3000DSP\u5b9a\u5411\u7684FPGA\u80fd\u5728\u4e00\u4e2a\u82af\u7247\u4e0a\u5e76\u884c\u5b9e\u73b0\u5f88\u591a\u529f\u80fd\u3002\u901a\u7528\u53d1\u9001\u3001\u903b\u8f91\u548c\u5b58\u50a8\u5668\u8d44\u6e90\u4e92\u8fde\u529f\u80fd\u3001\u6267\u884c\u52a0**\u80fd\u3001\u5b9a\u5e8f\u548c\u5b58\u50a8\u6570\u636e\u3002\u67d0\u4e9b\u57fa\u672c\u5668\u4ef6\u4ec5\u63d0\u4f9b\u4e58\u6cd5\u652f\u6301\uff0c\u9700\u8981\u7528\u6237\u5efa\u9020\u5176\u4ed6\u903b\u8f91\u529f\u80fd\u3002\u66f4\u590d\u6742\u7684\u5668\u4ef6\u63d0\u4f9b\u52a0\u3001\u51cf\u548c\u7d2f\u52a0\u529f\u80fd\u505a\u4e3aDSP\u6784\u5efa\u5355\u5143\u7684\u4e00\u90e8\u5206\u3002FPGA\u901a\u5e38\u5e26\u6709\u51e0\u5341\u4e58\u6cd5\u5668\u5355\u5143\uff0c\u53ef\u5de5\u4f5c\u5728\u51e0\u767eMHz\u7684\u65f6\u949f\u9891\u7387\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

FIR \u6ee4\u6ce2\u5668 \uff08\u56fe1\uff09\u5b58\u50a8n\u6570\u636e\u5355\u5143\u7cfb\u5217\uff0c\u6bcf\u4e2a\u6570\u636e\u5355\u5143\u5ef6\u8fdf\u4e00\u4e2a\u9644\u52a0\u5468\u671f\u3002\u901a\u5e38\uff0c\u8fd9\u4e9b\u6570\u636e\u5355\u5143\u79f0\u4e4b\u4e3a\u5206\u652f\u3002\u6bcf\u4e2a\u5206\u652f\u4e0e\u7cfb\u6570\u76f8\u4e58\uff0c\u5176\u7ed3\u679c\u6c42\u548c\u4ea7\u751f\u8f93\u51fa\u3002\u67d0\u4e9b\u65b9\u6cd5\u5e76\u884c\u6267\u884c\u6240\u6709\u7684\u4e58\u6cd5\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1080"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1080"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1080\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1080"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}