白小姐四肖必选一肖

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IC解密白小姐四肖必选一肖 > 解密算法 > FPGA如何实现FFT算法?
FPGA如何实现FFT算法?
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ZHUANYEXINPIANJIEMIGONGSI

时间 : 2019-05-13 11:57 浏览量 : 88

SUIZHESHUZIJISHUDEKUAISUFAZHAN,SHUZIXINHAOCHULIYISHENRUDAOGEGEXUEKELINGYU。ZAISHUZIXINHAOCHULIZHONG,XUDUOSUANFARUXIANGGUAN、LVBO、PUGUJI、JUANJIDENGDOUKETONGGUOZHUANHUAWEILISANFULIYEBIANHUAN(DFT)SHIXIAN,CONGERWEILISANXINHAOFENXICONGLILUNSHANGTIGONGLEBIANHUANGONGJU。DANDFTJISUANLIANGDA,SHIXIANKUNNAN。KUAISUFULIYE(FFT)DETICHU,DADAJIANSHAOLEJISUANLIANG,CONGGENBENSHANGGAIBIANLEFULIYEBIANHUANDEDIWEI,CHENGWEISHUZIXINHAOCHULIZHONGDEHEXINJISHUZHIYI,GUANGFANYINGYONGYULEIDA、GUANCE、GENZONG、GAOSUTUXIANGCHULI、BAOMIWUXIANTONGXINHESHUZITONGXINDENGLINGYU。

白小姐四肖必选一肖MUQIAN,YINGJIANSHIXIANFFTSUANFADEFANGANZHUYAOYOU:TONGYONGSHUZIXINHAOCHULIQI(DSP)、FFTZHUANYONGQIJIANHEXIANCHANGKEBIANCHENGMENZHENLIE(FPGA)。DSPJUYOUCHUNRUANJIANSHIXIANDELINGHUOXING,SHIYONGYULIUCHENGFUZADESUANFA,RUTONGXINXITONGZHONGXINDAODEBIANYIMA、QAMYINGSHEDENGSUANFA。DSPWANCHENGFFTYUNSUANXUZHANYONGDALIANGDSPDEYUNSUANSHIJIAN,SHIZHENGGEXITONGDESHUJUTUNTULVJIANGDI,TONGSHIYEWUFAFAHUIDSPRUANJIANSHIXIANDELINGHUOXING。CAIYONGFFTZHUANYONGQIJIAN,SUDUSUINENGGOUDADAOYAOQIU。DANQIWAIWEIDIANLUFUZA,KEKUOZHANXINGCHA,CHENGBENANGGUI。SUIZHEFPGAFAZHAN,QIZIYUANFENGFU,YIYUZUZHILIUSHUIHEBINGXINGJIEGOU,JIANGFFTSHISHIXINGYAOQIUYUFPGAQIJIANSHEJIDELINGHUOXINGXIANGJIEHE,SHIXIANBINGXINGSUANFAYUYINGJIANJIEGOUDEYOUHUAPEIZHI,BUJINKEYITIGAOCHULISUDU,BINGQIEJUYOULINGHUOXINGGAO。KAIFAFEIYONGDI、KAIFAZHOUQIDUAN、SHENGJIJIANDANDETEDIAN。ZHENDUIMOUOFDMXITONGZHONGFFTYUNSUANDESHIJIXUYAO,TICHULEJIYUFPGADESHEJILAISHIXIANFFTSUANFA,BINGYI16WEIZHANGSHUJU,64DIANFFTWEILI,ZAIQuartusⅡRUANJIANSHANGTONGGUOZONGHEHEFANGZHEN。

白小姐四肖必选一肖2 FFTYUANLIJISUANFAJIEGOU

FFTSHILISANFULIYEBIANHUAN(DFT)DEKUAISUSUANFA。DUIYUNDIANLISANDEYOUXIANZHANGSHIWENXULIEx(n),QIFULIYEBIANHUANWEI:

芯片解密

WANCHENGNDIANDEDFTXUYAON2CIFUSHUCHENGFAHEN(N-1)CIFUSHUJIAFA。DIANSHUDASHI,JISUANLIANGYEDA,SUOYINANYISHIXIANXINHAODESHISHICHULI。FFTDEJIBENSIXIANGSHILIYONGXUANZHUANYINZIWNDEZHOUQIXING、DUICHENGXING、TESHUXINGYIJIZHOUQINDEKEHUHUANXING,JIANGZHANGDUWEINDIANDEXULIEDFTYUNSUANZHUCIFENWEIJIAODUANXULIEDEDFTYUNSUAN,HEBINGXIANGTONGXIANG,DADAJIANSHAOLEJISUANLIANG。

白小姐四肖必选一肖FFTSUANFAFENWEILIANGDALEI:YILEISHIZHENDUIN=2DEZHENGSHUCIMIDESUANFA,RUJI2SUANFA、JI4SUANFA、SHIYINZISUANFAHEFENLIESUANFADENG:LINGYILEISHIN≠2DEZHENGSHUCIMISUANFA,YIwinogradWEIDAIBIAODEYILEISUANFA。YINGJIANSHIXIANSHI,BUJINYAOKAOLVSUANFAYUNSUANLIANGDEDAXIAO,ERQIEYAOKAOLVSUANFADEFUZAXINGHEMOKUAIHUA。KONGZHIJIANDAN、SHIXIANGUIZHENGDESUANFAZAIYINGJIANXITONGZHONGYAOYOUYUJINJIANGDIYUNSUANLIANGDESUANFA。XIANYOUFFTSUANFADEFPGASHEJIFANGANJIBENSHANGDOUSHIZHENDUIYUDIYILEISUANFA,ERDIERLEISUANFAJINGUANYOUQIZHONGYAODELILUNJIAZHI,DANYINGJIANBUYISHIXIAN。YOUYUGAISHEJIDIANSHUBUSHITAIDUO,ZONGHEKAOLVFFTCHULIQIDEMIANJIHECHENGBEN。SUOYICAIYONGANSHIJIANCHOUQUDEJI2KUAISUFULIYESUANFA(JI2DIT-FFT)。

白小姐四肖必选一肖DUIYUZHANGDUWEIN=2mDEXULIEx(n),QIZHONGmSHIZHENGSHU,JIANGx(n)ANQIOUFENCHENGLIANGZU,JILING:n=2rHEn=2r+1,ERr=0,1,…,N/2-1,YUSHI:

单片机解密

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3 FFTCHULIQIDEJIEGOUSHEJI

FFTSHIXIANDESHEJIFANGANYOUSHUNXUCHULI、JILIANCHULI、BINGXINGCHULIHEZHENLIECHULI。SHUNXUCHULIMEICIYUNSUANJINYONGYIGEDIEXINGDANYUAN,CHULIFANGSHIJIANDAN,YUNSUANSUDUJIAOMAN。JILIANCHULI、BINGXINGCHULIHEZHENLIECHULIDESUDUJIAOKUAI,DANZHANYONGZIYUANJIAODUO。KAOLVDAOGAISHEJIYUNSUANDIANSHUJIAOSHAO,YINCICAIYONGGAIJINDESHUNXUCHULIFANGAN,ZAIYUANYOUSHUNXUCHULIDEJICHUSHANGDUIFFTCHULIGUOCHENGZHONGSHUJUCHUANSHUJINXINGKONGZHI。SHIDEGAIJIEGOUZAIJICHENGYUANYOUSHUNXUCHULIDIANLUJIANDAN、ZHANYONGZIYUANJIAOSHAOYOUDIANTONGSHIYOUJIANYOUJILIANCHULIYUNSUANSUDUJIAOKUAIDEYOUDIAN。CAIYONGZIDINGXIANGXIADEFANGFADUICHULIQIMOKUAIHUA。

4 MOKUAISHEJIYUZONGHEFANGZHEN

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4.1 DIEXINGYUNSUANDANYUAN

白小姐四肖必选一肖DIEXINGYUNSUANDANYUANSHIZHENGGEFFTCHULIDANYUANDEZHONGYAOBUFEN,ZHIJIEYINGXIANGZHENGGEFFTDANYUANXINGNENG。JI2SHIJIANCHOUQUDEDIEXINGXINHAOLIUCHENGTURUTU3SUOSHI,pHEqWEISHUJUXUHAO,xm(p))HExm(q)SHIDImJIDIEXINGYUNSUANDESHURU,xm+1(p)HExm+1(q)SHIGAIDIEXINGYUNSUANDESHUCHU,WrNWEIXIANGYINGDEXUANZHUANYINZI。

YOUSHANGSHIKANCHU,YIGEJI2DIEXINGYUNSUANYAOJINXING1CIFUCHENG、2CIFUJIA。WEILETIGAOYUNSUANSUDUCAIYONGBINGXINGYUNSUAN,CAIYONG4GESHISHUCHENGFAQI、3GESHISHUJIAFAQIHE3GESHISHUJIANFAQIZUCHENG。SHESHURUSHUJU:x1=x1_r+jx1_im,x2=2_r+jx2_im,XUANZHUANYINZIWEIWrN=c-jd,ZESHUCHUy1=y1_r+jy1_imHEy2=y2_r+jy2_im。SHIXIANDIEXINGYUNSUANDANYUANRUXIATUSUOSHI。

IC解密

白小姐四肖必选一肖SHUJUGESHIXUANZEDINGDIAN16WEIERJINZHIBUMA。SHEJISHIBIXUKAOLVCHENGFAQISUDU,JIANGHUIZHIJIEYINGXIANGZHENGGEFFTCHULIDANYUANDEYUNSUANSUDU,GAISHEJIDECHENGFAQILIYONGQuartusⅡKAIFARUANJIANZHONGSUOTIGONGDEHONGDANYUANSHENGCHENG。CHENGFAQIDELIANGSHURUJUNWEI16WEI,SHUCHU32WEI。YINWEICHENGFAQIZHONGDAIYOUXUANZHUANYINZIXIANG.SUOYICHENGFAYUNSUANHOUBUYINGGAIBIANSHURUDEFUZHIJICHENGFAQIDESHUCHURENGWEI16WEI,YINCIYAODUISHUCHUSHUJUJINXINGJIEQU,JIEQUQIZHONG16WEIZUOWEIJIA(JIAN)FAQIDESHURU。

4.2 CUNCHUDANYUAN

ZAIFFTCHULIDANYUANZHONGCUNCHUQISHIBIBUKESHAODEDANYUAN,DIEXINGYUNSUANSHUJUDESHURUSHUCHUHEZHONGJIANJIEGUODECUNCHUDOUYAOJINGGUOCUNCHUQI,YINCITAMENDEPINFANDUXIECAOZUODUIZHENGGEFFTCHULISUDUYINGXIANGJIAODA。TU2ZHONGCUNCHUQIAHECUNCHUQIBYOURAMHEZHUANGTAIJIZUCHENG,GEZIFENBIEJUYOUSHUJUZONGXIAN、DIZHIZONGXIANHECHUFASHIZHONG。CUNCHUQIAJIESHOUWAIBUSHURUSHUJU,CUNCHUQIBSHIZHONGJIANJIEGUODANYUAN,CHUDIYIJIDIEXINGYUNSUANWAIMEIJISHUJUDESHURUSHUCHUJUNJINGGUOGAICUNCHUQI。ZAILIANGKUAICUNCHUQIHEDIEXINGYUNSUANMOKUAIZHIJIANJIARULIANGGESHUJUKONGZHIQIPEIHEGONGZUO,KEYIZAIXIERUSHANGYIZUZHONGJIANJIEGUODETONGSHIDUQUXIAYIZUDIEXINGYUNSUANSHUJU,CONGERTIGAOFFTDECHULISUDU。

4.3 XUANZHUANYINZIDANYUAN

白小姐四肖必选一肖XUANZHUANYINZIDANYUANSHIYONGYUCUNCHUFFTYUNSUANSUOXUDEXUANZHUANYINZIWrN=exp(-j2πr/N)。ZAIMatlabZHONGXUANZHUANYINZIFENWEISHIBUHEXUBUCHANSHENG,YOUYUTAMENSHIXIAOYU1DEXIAOSHU,GUZAISHEJIZHONGXUJIANGQIDINGDIANHUA。QIGUOCHENGSHIJIANGXUANZHUANYINZIKUODA214BEI。QUZHENGSHUBUFENZHUANHUAWEI16WEIDINGDIANSHU,YI.hexWENJIANGESHIBAOCUN,LIYONGQuartusⅡRUANJIANDEMegawizardGONGJUSHEJI。ROM,BINGJIANG.hexWENJIANTONGHUAZAIQIZHONG。GENJUXUANZHUANYINZIDEDUICHENGXINGHEZHOUQIXING,ZAILIYONGROMCUNCHUXUANZHUANYINZISHI,KEYIZHICUNCHUXUANZHUANYINZIBIAODEYIBUFEN,TONGGUODIZHIDEGAIBIANCHAXUNCHUMEIJIDIEXINGYUNSUANSUOXUDEXUANZHUANYINZI。

4.4 KONGZHIDANYUAN

KONGZHIDANYUANYONGYUXIEDIAOQUDONGGEMOKUAI,ZAIFFTYUNSUANZHONGJUYOUGUANJIANZUOYONG。CUNCHUQIA、XUANZHUANYINZIDANYUANJISHUJUKONGZHIQIDEDUXINHAO,CUNCHUQIBDEDUXIEXINHAODOUSHIYOUKONGZHIDANYUANCHANSHENG。KONGZHIDANYUANTONGGUOYIGEYOUXIANZHUANGTAIJI(FSM)SHIXIAN,SHIYONGLIANGGENEIBUJISHUQIKONGZHIZHUANGTAIJIDEFANZHUAN。KONGZHIDANYUANJUYOUDANDUDESHURUSHIZHONG,KECHANSHENGXIANGYINGDEKONGZHIXINHAO。

4.5 ZONGHEFANGZHEN

XUANYONGAlteraGONGSIDEQuartusⅡRUANJIANZUOWEIKAIFAPINGTAI,YIStratixXILIEZHONGDEEP1S25XINGFPGAWEIHEXINQIJIAN,CAIYONGBAIDINGXIANGXIADESHEJISILUHEVHDLYUYAN,SHIXIANDUIGEGEMOKUAIDANYUANDESHEJI、ZONGHEHEFANGZHEN。WEILEJIANHUASHEJI,ZHIZAISHUJUSHURUSHIZHONGXIASHURULEYIZU64GEFUSHU,QIYUSHURUSHEWEI0,BINGQIESHIBUHEXUBUDOUXIANDINGZAI±l,±2,±3,±4,e5ZHINEI。WEIFANGZHIYICHUXIANJIANGSHURUSHUJUCHENGYIYIDINGBILIYINZI2-9,ZAICHENGYI2 15ZHUANHUAWEISHILIUJINZHISHU。SHUCHUDEJIEGUORUTU5SUOSHI。XUYAOZHUYIDESHI:FANGZHENJIEGUOCHENGYI2 -6HOUCAISHISHIJIJIEGUO。JIANGFANGZHENJIEGUOYUMatlabJISUANDEJIEGUOXIANGBIJIAO,SHUJUJIBENYIZHI,SHUOMINGLESHEJIZHENGQUE,QIWUCHAZHUYAOLAIYUANYUSHUJUDEJIEQUHEXUANZHUANYINZIDEJINSI。