robmaunder / polar-3gpp-matlab Goto Github PK
View Code? Open in Web Editor NEWMatlab simulations of the encoder and SCL decoder for the New Radio polar code from 3GPP Release 15
License: GNU General Public License v3.0
Matlab simulations of the encoder and SCL decoder for the New Radio polar code from 3GPP Release 15
License: GNU General Public License v3.0
The CRC bits by the below code don't match those calculated using other ways:
% Generate the CRC bits.
G_P = get_crc_generator_matrix(A+P,crc_polynomial_pattern);
crc_bits = mod([ones(1,P),a]*G_P,2);
If these lines are changed to either:
% Generate the CRC bits.
G_P = get_crc_generator_matrix(A,crc_polynomial_pattern);
crc_bits = mod(a*G_P,2);
or
% Generate the CRC bits.
G_P = get_crc_generator_matrix(A+P,crc_polynomial_pattern);
crc_bits = mod([zeors(1,P),a]*G_P,2);
the results will match. The first method is used in other encoders (DCA, PCCA etc).
I am a rookie in new radio.
In plot_BLER_vs_SNR.m ,I find the LLR vector be caculated by your method(In line 151-154).
But I find some paper,the LLR in QPSK modulation,use 'ln' to caculate,and you donot use it.
can you tell me why? thank you!
Can polar code be used with MIMO now? I've searched a lot, it seems that in 5g nr polar code can not be used with MIMO, there's only 1 antenna port for polar code right?
When I directly call the PUCCH_encoder.m and PUCCH_decoder.m, only 15 (32,16) polar blocks can be encoded or decoded per second. After reading the code, I have found an interesting point that the path 'component' will be added every time the encoding and decoding function is called. After moving the corresponding codes to top file to make them be called only once, the speed can be improved by up to 100 times (about 2000 blocks per second). So, I think this may be taken into consideration in your future revision.
Thank your work!
When I run plot_SNR_vs_A.m,a error occur.
Error in the line 60 ,info_bit_pattern =get_3GPP_info_bit_pattern(K,N,E),it says I should be no greater than N(line 57)
And in function get_3GPP_info_bit_pattern, I is the input parameter K,and N is generated by N = length(Q_N)(line49) ,Q_N is input parameter N. And N is generated by N = get_3GPP_N(K,E,n_max)(In line58, plot_SNR_vs_A.m). So N is a integer number,and after length(),N is always equal 1. I think it is reason.
In PDCCH_encoder.m or other procedure, Q_N is generated by get_3GPP_sequence_pattern(N), it is a vector , so can be use in get_3GPP_info_bit_pattern(K,N,E). And parameter 'mode', it is also not used in plot_SNR_vs_A.m.
Maybe it is a small mistake, or a something right but I have not understand.
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.