1.完整项目描述和程序获取
>面包多安全交易平台:https://mbd.pub/o/bread/ZJyZlJty
>如果链接失效，可以直接打开本站店铺搜索相关店铺：
>如果链接失效，程序调试报错或者项目合作也可以加微信或者QQ联系。
2.部分仿真图预览
3.算法概述
FFT傅里叶变换是一种高效的频谱分析方法，可以将时域信号转换为频域信号，用于频偏估计。FFT傅里叶变换是一种将时域信号转换为频域信号的方法，可以将信号的频谱信息展现出来。对于基带信号，通过FFT可以分析信号的频谱分布，从中获得频偏的估计。
4.部分源码
module TEST;
reg clk;
reg i_clkSYM;
reg rst;
reg start;
wire [3:0] parallel_data;
wire [15:0]sin;
wire [15:0]cos;
wire signed[19:0] I_com;
wire signed[19:0] Q_com;
wire signed[15:0]o_Ifir_T;
wire signed[15:0]o_Qfir_T;
// DUT
tops_16QAM_mod top(
.clk(clk),
.rst(rst),
.start(start),
.parallel_data(parallel_data),
.sin(sin),
.cos(cos),
.I_com(I_com),
.Q_com(Q_com),
.I_comcos(o_Ifir_T),
.Q_comsin(o_Qfir_T)
);
wire [15:0]o_freq;
wire signed[15:0]o_cos;
wire signed[15:0]o_sin;
wire signed[15:0]o_Ifir;
wire signed[15:0]o_Qfir;
wire o_ends;
wire o_start;
wire o_enable;
wire signed[31:0]absy;
//QPSK相位估计和补偿
tops_16QAM_Fre_est tops_16QAMU(
.i_clk (clk),
.i_rst (~rst),
.i_clkSYM(i_clkSYM),
.i_I(o_Ifir_T),
.i_Q(o_Qfir_T),
.o_ends(o_ends),
.o_start(o_start),
.o_enable(o_enable),
.absy (absy),
.o_freq(o_freq),
.o_cos (o_cos),
.o_sin (o_sin),
.o_Ifir (o_Ifir),
.o_Qfir (o_Qfir)
);
initial begin
clk = 0;
rst = 0;
start = 1;
#10;
rst = 1;
end
always #5
clk <= ~clk;
reg writeen;
initial
begin
writeen = 1'b0;
i_clkSYM=1'b1;
#100
writeen = 1'b1;
end
always #80 i_clkSYM=~i_clkSYM;
initial
begin
#14400000
$stop();
end
//显示发射端带相位旋转的星座图
integer fout1;
integer fout2;
initial begin
fout1 = $fopen("It.txt","w");
fout2 = $fopen("Qt.txt","w");
end
always @ (posedge clk)
begin
if(writeen==1)
begin
$fwrite(fout1,"%d\n",o_Ifir_T);
$fwrite(fout2,"%d\n",o_Qfir_T);
end
end
//显示接收端相位估计和补偿之后的星座图
integer fout3;
integer fout4;
initial begin
fout3 = $fopen("Ir.txt","w");
fout4 = $fopen("Qr.txt","w");
end
always @ (posedge clk)
begin
if(writeen==1)
begin
$fwrite(fout3,"%d\n",o_Ifir);
$fwrite(fout4,"%d\n",o_Qfir);
end
end
endmodule
00_034m
---
