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Code Listing by Yang Xiao

Code 1-10 of 16   Pages: Go to  1  2  Next >>  page  






The program can simulate fast Tanner LDPC codec with quasi-circular generator matrices, and 1/2 code rate.
Copyright (C2010-2015) Yang XIAO, Beijing Jiaotong University, Nov.3, 2010, E-Mail: yxiao@bjtu.edu.cn.
Current Version Published: 2010-11-5
In my following books, I derived the algorithm of constructing quasi-circular generator matrices from Tanner codes.
[1] Yang Xiao, Turbo and LDPC Codecs and their Applications,...



Hurwitz-Schur Stability Test of 2-D Polynomials

Copyright (C) Yang XIAO, Beijing Jiaotong University, Aug.8, 2007, E-Mail: yxiao@bjtu.edu.cn.

The stability of 2-D continuous-discrete systems and time-delay systems can be...



The Program to test the girth 4 of Gallager LDPC codes
Copyright (C) Yang XIAO, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn,
The program analyzes the girth 4 for Gallager LDPC codes. The figures show
the parity check matrix H and...



The program can produce the parity check matrix of DVB-S2 LDPC with the size 8100*4050, and 1/2 code rate.
Copyright (C) Yang XIAO, Beijing Jiaotong University, June 22, 2010, E-Mail: yxiao@bjtu.edu.cn.
Current Version Published:...



The program can test the stability of 2-D face of an interval matrix.
Copyright (C) Yang XIAO, Beijing Jiaotong University, Aug.2, 2007, E-Mail: yxiao@bjtu.edu.cn.
By relying on a two-dimensional (2-D) face test, Ref [1,2] obtained a...



We found that the generator matrix in Fig.6-2 to be wrong, Bi,j's are not circulant. You can not derive circulant Bi,j's from the parity check matrix in Fig.6-1.

There are two vital problems in the LDPC codes of CCSDS 131.0-P-1.1:
...



The program can get spatial-time response of 2-D Continuous-Discrete systems by taking inverse 2-D Laplace-z transform [1]. The detailed algorithm is provided in Ref. [1].
Copyright (C) Yang XIAO, BJTU, July 28, 2007, E-Mail:...



Copyright (C2010-2013) Yang XIAO, BJTU, April 16, 2010, E-Mail: yxiao@bjtu.edu.cn.
This program can produce the Parity Check Matrices of DVBS2 codes, while Ref. [1] remindes you that these codes are not good as the LDPC codes IEEE802.16e for...



Recently, we find some published programs for the construction of LDPC codes have not concerned the Girth test problem, which will not the implementation of LDPC Codec to have good decoding BER. Thus, we publish a simple program to provide a tool...



The program can get the 2-D impulse response of a 2-D recursive discrete system in 2-D digital domain. For a 2-D recursive discrete system, the inverse 2-D z transform can be implemented by a 2-D IIR filter [1-3].
Copyright (C) Yang XIAO,...