For more information on changing property values, see System Design in MATLAB Using System Objects. TrellisStructure— Trellis structure of convolutional code poly2trellis(7, [171 133]) (default) | structure I
The modelhdlcoderviterbi2demonstrates an implementation of a Viterbi decoder that incorporates MATLAB Function blocks for use in simulation and HDL code generation. To open the model, run this command: open_system('hdlcoderviterbi2'); When your design contains MATLAB Function blocks, run theCheck ...
https://www.mathworks.com/matlabcentral/fileexchange/21023-convolutional-encoder-and-hard-decision-viterbi-decoder When I try to run this code, mean square error between input and output is almost %40. When I change the output and next state arrays, the error...
QPSKCode = QPSKEncode(ConCode, Length);%QPSK调制 SNR = 1: 1 : 5; error=zeros(Frame,length(SNR)); fork = 1:length(SNR) RecCode = awgn(QPSKCode,SNR(k),'measured');%给信号加噪 DQPSKCode = QPSKDecode(RecCode, Length);%QPSK解调 Decoder = Viterbi(DQPSKCode, Length);%维特比译码 err...
This example simulates the BPSK communication system in MATLAB incorporating the Viterbi decoder HDL implementation via the cosimulation System object. This section of the code calls the processing loop to process the data frame-by-frame with 1024 bits in each data frame. for counter = ...
deinter1=randdeintrlv(decoder2,length(decoder2)); i=i+1; end %Error:Length of the input code vector must be a multiple of the number of bits in an inputsymbol. Errorin ==> pnsg at 32 decoder1=vitdec(decode1,trel,20,'cont','hard');...
A rate 3/4 code has a traceback depth of10(ConstraintLength– 1). A rate 5/6 code has a traceback depth of15(ConstraintLength– 1). For more information, see[7]. Tips Consider using thecomm.ViterbiDecoderSystem object™ when successive calls to the Viterbi algorithm are needed. The ...
This study proposes a design of the Soft Viterbi Algorithm decoder enhanced with Non-transmittable Codewords (SVAD-NTCs) to be used in storage media for error correction. Matlab simulation was used in this design in order to investigate behavior and effectiveness of SVAD-NTCs in correcting ...
title('AWGN channel viterbi decoder'); h = legend('uncoded', '[2,1,2]convolutional encoding'); set(h,'Interpreter','none') save conViterbi.mat; % EOF %%---testViterbi.m---%% %%---simEudist.m ---
To decode these convolutional code viterbi decoder is best choice. In this paper selection of viterbi decoder over conventional decoder is justified and a viterbi decoder is developed in MATLAB. This decoder is named My Viterbi and compared and analysed with the MATLAB viterbi decoder. Full-Text ...