reg [:]data;

initial begin

     # clk =;

    forever # clk = ~clk;

 end

 initial begin

     # rst=;

     # rst=;

 end

reg [:]data_sin[:];  ////改动点数据矩阵长度设置

integer i;

    initial

        begin

            i=;

            begin

            $readmemb("D:/Chapter_8/E8_1_QAMModem/QAM.txt",data_sin,,); ///改动点数据矩阵长度  注意是“/”  而不是“\”

            end

            forever

            begin

                @(posedge clk)

                    begin

                        i <= i+;

                        din <= data_sin[i];

                    end

            end

        end

endmodule

fid = fopen('data.txt','w');

for oo=1:1:i

if mod(oo,10) == 0

fprintf(fid,'%f,%f,\n',sI1(oo),sQ1(oo));

else

fprintf(fid,'%f,%f,',sI1(oo),sQ1(oo));

end

end

fclose(fid);

integer file_out;

initial

begin

    file_out = $fopen("mI.txt");

    if (!file_out) begin

        $finish;

    end

end            

wire signed [:] dout_s = fifo_fft_data[:];

always @ (posedge clk)

begin

    if(fifo_fft_valid)

    $fdisplay(file_out, "%d", dout_s);

end

integer file_out_Q;

initial

begin

    file_out_Q = $fopen("mQ.txt");

    if (!file_out_Q) begin

        $finish;

    end

end            

wire signed [:] dout_s_Q = fifo_fft_data[:];

always @ (posedge clk)

begin

    if(fifo_fft_valid)

    $fdisplay(file_out_Q, "%d", dout_s_Q);

end

对应以上文件的matlab 读取数据：

%读取FPGA仿真出的数据

clc;

clear;close all;

fid=fopen('mI.txt','r');

[di,N]=fscanf(fid,'%lg',inf);

fclose(fid);

fid=fopen('mQ.txt','r');

[dq,N]=fscanf(fid,'%lg',inf);

fclose(fid);

exp1=di+dq*1i;

% exp2 = exp1(25000:30000);

% exp2 = exp1(1024:8192);

exp2 = exp1;

plot(di);

figure;

plot(dq);

figure;

plot(20*log10(abs(fft((exp2).* window(@gausswin,length(exp2),4)))));