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基于matlab的数字图像处理毕业设计论文[1]|计​算​机
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你可能喜欢　　　　%function [Ber] = DSCDMA_NOCODEINTLVR();　　clear　　clc　　fprintf('Start! Please waiting ...\n');　　%%%%%%%%%%%%%% 需要调整的参数 %%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%%%%%%% V 表示车速 10km每小时 100km/h
300km/h 　　%%%%%%%%%%%SNR 表示信噪比，一般去0：5：20　　%%%%%%%%%% SF_Bit 表示扩频比特
可以取 2 4 6 8　　%%%%%%%%%% Plt_Num 表示 信道估计平均的长度，可以取 8到256　　%%%%%%%%%% channel parameters 信道参数 ％％％％％％％％％％％％％％％　　C = 3e8; 　　Fc = 2.11e9; 　　V = 10;
%km/h　　Tc = 1/1.2288e6;
%Chip duration according to digital bandwidth　　%%%%%%% 扩频增益 信道估计用的导频数目 ％％％％％％％％％％％％％　　SF_Bit= 2;　　Plt_Num = 256;
%Symbol:The integrated length for pilot estimation　　SF=2^SF_B
%Spread factor　　SF_DB=10*log10(SF);　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%
Generating the Walsh code matrix. The sequence number is from 0 to SF - 1
%%%　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　Index = 1;　　Wal_Mat = 1;　　for k = 1 : SF_Bit　　Wal_Mat = [ Wal_Mat Wal_Mat.*((1-2*bitget(Index,k))*ones(1,size(Wal_Mat,2)))];　　end　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%%%%%%%%%%
Preparing parameters for encoding and interleaver
%%%%%%%%%%%%%%%%　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　Fram_Len = ceil( 2/(100*SF*Tc) - 0.5);
%Signal length.　　Half_FLen = Fram_Len/2;　　Calculate_Num = 30*Fram_L　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%% Parameters for simulation the multipath channel with modified Jakes model %%%%%%%　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　Del_Idx=[1 2 3 4 6];
%Model B with rate = 1　　Del_Gain=[0. 0.253 0.259 0.0447]; % The energe of the fore two paths are combined as one path.　　Sample_Rate = 1;　　Max_Del=max(Del_Idx);
%Max time delay　　Path_Num=length(Del_Idx);
%Time invariant multipath　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%%%%%%%%%%%%%%%%%
Parameters for receiver
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　Win_Len = 12;
%Window length for searching　　Max_Num = 3;
%Stong paths　　fpname = strcat(mfilename, '.dat');　　fp=fopen(fpname,'a+');　　fprintf(fp,strcat('\n%%Created at &',datestr(now),'& from &',mfilename,'.m&\n'));　　fprintf(fp,'%%SF = %3d\t\tPlt_Num = %4d\t\tSpeed = %3dkm/h\t\tHalf_FLen=%5d\t\tCalculate_Num=%7d\n',SF,Plt_Num,V,Half_FLen,Calculate_Num);　　fprintf(fp,'%%SNR
BER\n');　　fclose(fp);　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　for SNR = 20　　fprintf('*****SNR = %5.3f*****\n',SNR);　　PN_RegStateI = [zeros(1,14) 1];
　　PN_RegStateQ = [zeros(1,14) 1];
　　PN_PolynI = [0 1 0 0 0 1 1 1 0 1 0 0 0 0 1];
　　PN_PolynQ = [0 0 1 1 1 0 0 0 1 1 1 1 0 0 1];　　Time_BeginCH = 0;　　Data_Length = 0;　　Err_Num = 0;　　while ( Data_Length & Calculate_Num )　　% the source signal　　TxSymbols = 1 - 2*randint(1,Fram_Len,2);　　% QPSK modulation 　　TempTxSymbols = reshape(TxSymbols,2,length(TxSymbols)/2);　　TxSignal = TempTxSymbols(1,:) + j*TempTxSymbols(2,:);　　% Signal Repeat　　TxSig_Repeat=kron(TxSignal,ones(1,SF));　　% produce the walsh sequence with the same rate as PN code　　Walsh_Sequence = repmat(Wal_Mat,1,length(TxSignal));　　%produce the PN code sequence　　PN_SequenceI = zeros(1,length(TxSig_Repeat));　　PN_SequenceQ = zeros(1,length(TxSig_Repeat));　　[PN_SequenceI,PN_RegStateI] = PnGen(PN_PolynI,PN_RegStateI,length(TxSig_Repeat));　　[PN_SequenceQ,PN_RegStateQ] = PnGen(PN_PolynQ,PN_RegStateQ,length(TxSig_Repeat));　　PN_Complex = PN_SequenceI + j*PN_SequenceQ;　　%combine the PN code and Walsh code　　WalPN_Complex = PN_Complex.*Walsh_S　　% spreading the singal and pilot symbols added 　　TxSig_WalPN = TxSig_Repeat.*WalPN_Complex + PN_C　　% passing the channel　　TxSig_WalPNM = kron(TxSig_WalPN,ones(1,Sample_Rate));　　CH_Data = MultiCHannel(Del_Gain,Fc,V,Tc,length(TxSig_WalPNM),Time_BeginCH,[0.8 0.28]);　　Time_BeginCH = Time_BeginCH + length(TxSig_WalPNM);　　for i = 1 : length(Del_Idx)　　if Del_Idx(1,i) & 1　　Temp_Sig(i,:) = [ zeros(1,Del_Idx(1,i)-1) TxSig_WalPNM(1,[1:end-Del_Idx(1,i)+1])]; 　　else
　　Temp_Sig(i,:) = TxSig_WalPNM(1,[1:end]);　　end　　end
　　TxSig_WalPNCh = sum(Temp_Sig.*CH_Data,1);　　%%%%%%%%% add AWGN noise %%%%%%%%%%%%%%%%%%%%%%%%%%%　　TxSig_WalPNChN = TxSig_WalPNCh +[1 j]*randn(2,length(TxSig_WalPNCh))*10^((-SNR+SF_DB)/20);
　　Down_WalPNChN = TxSig_WalPNChN(1:Sample_Rate:end);
%derepeat the signal　　% Estimation and RAKE receiver　　%%%%%%% de spreading %%%%%%%%%%%%%%%　　for i = 1 : 12　　if i & 1　　Temp_RecSig(i,:) = Down_WalPNChN(1,[i:end 1:i-1]).*conj(PN_Complex); 　　else
　　Temp_RecSig(i,:) = Down_WalPNChN(1,[i:end]).*conj(PN_Complex);　　end　　end
　　%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　%%%%%
channel estimation and channel choose channel combination
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%　　for i = 1:Half_FLen/Plt_Num　　Temp_EstCH = sum( Temp_RecSig( :,(i-1)*Plt_Num*SF+1:i*Plt_Num*SF ),2);　　[Tmp Max_Idx] = sort(Temp_EstCH);　　Str_Idx = Max_Idx( end - Max_Num + 1:end );　　EstCH = Temp_EstCH(Str_Idx)/(2*Plt_Num*SF);　　for uu = 1 : Plt_Num　　RecSig((i-1)*Plt_Num+uu)=Wal_Mat(1,:)*Temp_RecSig(Str_Idx,(i-1)*Plt_Num*SF+(uu-1)*SF+1:(i-1)*Plt_Num*SF+uu*SF).'*conj(EstCH)/SF;　　end
　　% Adjust and Comparison
　　Rec_Adjust = reshape([real(RecSig);imag(RecSig)],1,length(RecSig)*2);　　Err_Num = Err_Num + sum( sign(Rec_Adjust) ~= TxSymbols )　　Data_Length = Data_Length + length(TxSymbols);　　end
　　Ber = Err_Num/Data_Length
　　fp=fopen(fpname, 'a+');
　　fprintf(fp,'%5.2f\t',SNR);
　　fprintf(fp,'%10.8f\n',Ber);
　　fclose(fp);
楼主发言：3次 发图：0张
　　有没有人看得懂，求解释啊
　　明天就要毕业设计答辩了啊，崩溃啊
请遵守言论规则，不得违反国家法律法规同时转发到微博跪求大神帮忙明天就要答辩了_qt吧_百度贴吧
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我和我同学做的是光顺，看老师的视频的，用的是算术平均，然后老师要求创新，想请大神帮忙改一下做成加权平均的void CMeshSmoother::DoSmoothOnce(MyMesh* mesh){vector&MyMesh::Point& newPnewPoints.reserve(mesh-&n_vertices());for(auto it=mesh-&vertices_begin(); it !=mesh-&vertices_end();++it){auto vertexHandle=it.handle();int neighborVertexCount=0;MyMesh::Point newPoint(0,0,0);for(auto it2=mesh-&vv_begin(vertexHandle);it2 !=mesh-&vv_end(vertexHandle);++it2){auto neighborVertexHandle=it2.handle();newPoint +=mesh-&point(neighborVertexHandle);neighborVertexCount++;}newPoint /=neighborVertexCnewPoints.push_back(newPoint);}int vertexIndex=0;for(auto it =mesh-&vertices_begin();it!=mesh-&vertices_end();++it){auto vertexHandle=it.handle();auto newPoint=newPoints[vertexIndex];mesh-&set_point(vertexHandle, newPoint);vertexIndex++;}}
不懂什么叫光顺
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基于MATLAB的医学图像处理
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基于MATLAB的数字图像处理_毕业设计PPT|基​于​M​A​T​L​A​B​的​数​字​图​像​处​理​_​毕​业​设​计​P​P​T
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