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2.部分仿真图预览
3.算法概述
8PSK调制是一种相位调制方式，其基本原理是通过改变载波的相位来传递信息。在8PSK中，一个符号周期内的相位变化有8种可能的状态，分别对应3个比特的信息。因此，8PSK调制可以看作是一种将3个比特映射到一个符号的映射方式。
4.部分源码
`timescale 1ns / 1ps
//
// Company:
// Engineer:
//
// Create Date: 2023/05/03 06:21:37
// Design Name:
// Module Name: TEST
// Project Name:
// Target Devices:
// Tool Versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
module TEST();
reg i_clk;
reg i_clksample;
reg i_rst;
reg i_dat;
wire[2:0]o_ISET;
wire o_clk_3div;
wire signed[15:0]o_I8psk;
wire signed[15:0]o_Q8psk;
wire signed[15:0]o_Ifir_T;
wire signed[15:0]o_Qfir_T;
wire signed[15:0]o_cos_T;
wire signed[15:0]o_sin_T;
wire signed[31:0]o_modc_T;
wire signed[31:0]o_mods_T;
wire signed[31:0]o_mod_T;
wire signed[15:0]o_cos_R;
wire signed[15:0]o_sin_R;
wire signed[31:0]o_modc_R;
wire signed[31:0]o_mods_R;
wire signed[31:0]o_Ifir_R;
wire signed[31:0]o_Qfir_R;
//DQPSK调制
T8PSK T8PSKU(
.i_clk (i_clk),
.i_clksample(i_clksample),
.i_rst (i_rst),
.i_dat (i_dat),
.o_ISET (o_ISET),
.o_clk_3div(o_clk_3div),
.o_I8psk(o_I8psk),
.o_Q8psk(o_Q8psk),
.o_Ifir (o_Ifir_T),
.o_Qfir (o_Qfir_T),
.o_cos (o_cos_T),
.o_sin (o_sin_T),
.o_modc (o_modc_T),
.o_mods (o_mods_T),
.o_mod (o_mod_T)
);
//8PSK解调
wire [2:0]o_wbits;
wire o_bits;
R8PSK R8SKU(
.i_clk (i_clk),
.i_clksample(i_clksample),
.i_rst (i_rst),
.o_clk_3div(),
.i_med (o_mod_T[25:10]),
.o_cos (o_cos_R),
.o_sin (o_sin_R),
.o_modc (o_modc_R),
.o_mods (o_mods_R),
.o_Ifir (o_Ifir_R),
.o_Qfir (o_Qfir_R),
.o_wbits(o_wbits),
.o_bits(o_bits)
);
initial
begin
i_clk = 1'b1;
i_clksample= 1'b1;
i_rst = 1'b1;
#12000
i_rst = 1'b0;
end
always #80 i_clk=~i_clk;
always #5 i_clksample=~i_clksample;
initial
begin
i_dat = 1'b0;
#12000
repeat(10000)
begin
#160 i_dat = 1'b1;
#160 i_dat = 1'b1;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b1;
#160 i_dat = 1'b0;
#160 i_dat = 1'b1;
#160 i_dat = 1'b1;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b1;
#160 i_dat = 1'b1;
#160 i_dat = 1'b1;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b1;
#160 i_dat = 1'b0;
#160 i_dat = 1'b0;
#160 i_dat = 1'b1;
#160 i_dat = 1'b1;
#160 i_dat = 1'b0;
end
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 i_clk)
begin
if(i_rst==0)
begin
$fwrite(fout1,"%d\n",o_I8psk);
$fwrite(fout2,"%d\n",o_Q8psk);
end
else begin
$fwrite(fout1,"%d\n",0);
$fwrite(fout2,"%d\n",0);
end
end
endmodule
00_052m
---
