(1,N-M)); %产生需要发送的随机数 turbo_code = turbo_encode(Trans_data); Trans_BPSK = 2*turbo_code-1; %BPSK %通过高斯信道 Rec_BPSK = awgn(Trans_BPSK,SNR(i),'measured'); %turbo译码 x_hat = round(turbo_decode(Rec_BPSK)); [nberr,rat]= biterr(x_hat,Trans_data); Num_err = ...
Trans_data =round(rand(1,N-M));%产生需要发送的随机数 turbo_code = turbo_encode(Trans_data); Trans_BPSK = 2*turbo_code-1;%BPSK %通过高斯信道 Rec_BPSK = awgn(Trans_BPSK,SNR(i),'measured'); %turbo译码 x_hat =round(turbo_decode(Rec_BPSK)); [nberr,rat]= biterr(x_hat,Trans_dat...
Turbo码的关键在于利用交织器将两个RSC编码器的输出交织在一起,形成一个更强大的纠错能力。 MATLAB仿真实现 步骤1:定义参数 首先,我们需要定义一些仿真参数,如码率、交织器长度、迭代次数等。 % 定义参数 code_rate = 1/3; % 码率 interleaver_length = 1024; % 交织器长度 iterations = 10; % 迭代次数 步骤...
The encoder is a parallel concatenated convolutional code (PCCC) with two 8-state constituent encoders and a contention-free interleaver. The coding rate of turbo encoder is 1/3. The three encoded parity streams are concatenated block-wise to form the encoded output,[S P1 P2], whereSis the...
interleaver_matrix ( k + 1 ) = mod( (f1*k + f2*k*k) , N) + 1;%code_length; k = k+1 ; endend FPGA实现:实现交织需要一个ROM和一个双端口RAM,ROM存储交织矩阵,该矩阵的内容为数据存放在RAM中的地址。解交织相同,需要注意的是VIVADO中ROM IP核和RAM IP核配置后运行至少有一个时钟的延时,...
MATLAB2021a 2.核心代码 %% Turbo Code % Encoder: RSC (Recursive Systematic Convolution) % Decoder: BCJR iterative decoder %% Parameter declaration close all;clear all;clc; N=1e4; %Block length X=floor(2*rand(1,N)); %Information bit generation ...
matlab2022a仿真结果如下(完整代码运行后无水印): 仿真操作步骤可参考程序配套的操作视频。 2.算法涉及理论知识概要 该通信系统主要用于图像传输,适用于对图像质量和传输可靠性要求较高的场景,如无人机图像传输、视频监控、无线电视广播等。 在复杂的电磁环境中,需要保证图像传输的稳定性和清晰度,因此采用了扩频解扩和...
obtain lower bit error rate in the low SNR near Shannon limit,which is now used by many systems.In this paper,the principle of Turbo coding and decoding is analyzed,in order to make the Turbo Code simulation easier,a Turbo code simulation model based on Simulink module of Matlab is studied...
3.MATLAB核心程序 Rimages = []; for iii=1:length(datbin)/Iimage_len [SNR(i),iii,floor(length(datbin)/Iimage_len)] %产生需要发送的随机数 Trans_data = [datbin(Iimage_len*(iii-1)+1:Iimage_len*iii)]; turbo_code = turbo_encode(Trans_data); ...
Turbo编译码的Matlab实现