Rank: 135 based on 2394 downloads (last 30 days) and 11 files submitted
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Yang Xiao

E-mail
Company/University
Beijing Jiaotong University

Personal Profile:

I received B.S. degree from Beijing Post and Telecommunication College in 1983, and M. S. degree in 1989 and Ph.D. degree in 1991 from Beijing Jiaotong University, China. Since 1991, I have been with Beijing Jiaotong University to be lecturer, associate professor and professor.
My main research interests include: Space-Time Signal Processing, Communication Signal Processing and Systems, Multidimensional (M-D) Signal Processing and Systems.

Professional Interests:
Communication, Signal Processing

 

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Files Posted by Yang View all
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  • 11
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
27 Mar 2009 Screenshot Alternative good LDPC codes for DVB-S2 The program can produce the parity check matrix of DVB-S2 with the size 5400*2700. Author: Yang Xiao communications, coding theory, dvbs2 266 1
  • 4.0
4.0 | 1 rating
26 Oct 2007 Stability Test of AQM Network The program can determine the stability of AQM networks. Author: Yang Xiao aqm network, hybrid transform, 2d stability test 241 0
27 Aug 2007 Schur Stability Test of 2-D Polynomials The program can test the Schur stability of 2-D Polynomials. Author: Yang Xiao schur stability, 2d discrete systems, math, 2d polynomials 189 0
08 Aug 2007 Hurwitz-Schur Stability Test of 2-D Polynomials This program can test the Hurwitz-Schur Stability of 2-D Polynomials. Author: Yang Xiao hurwitzschur stabilit..., 2d polynomials, 2d continuousdiscrete 205 1
08 Aug 2007 Count the number of the girth 4 of LDPC codes The program can count the number of the girth 4 of LDPC codes. Author: Yang Xiao girth 4, algorithm, counting, coding theory, gallager, information theory 272 2
  • 3.33333
3.3 | 3 ratings
Comments and Ratings by Yang View all
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  • 3
Updated File Comments Rating
07 Jun 2009 LDPC matrix A matlab code written for generating LDPC matrix having memory M and periode T = M-1 Author: Zahoor

1. Your code has many girth-4, which means that the decoder of your codes can not provide correct solutions very fast. I is well known that good LDPC codes should have no girth-4 firstly.
2. I don't know why you can have such low level error in your code design.

20 Apr 2009 Flexible construction of girth-six QC-LDPC Codes constructs girth-six QC-LDPC codes given a row-weight,column-weight, sub-matrix size. Author: Gabofetswe Malema

Please check the BER of your codes: when j=4, k=8, m=57, the BER is very poor though it has no girth-4. Why?
30 Mar 2009 Alternative good LDPC codes for DVB-S2 The program can produce the parity check matrix of DVB-S2 with the size 5400*2700. Author: Yang Xiao

In our recent research for LDPC code design, we found that the bidiagnal matrix in parity check matrix will degrade the BER of the desired codes, including shortten DVB-S2 codes. The main reason is the bidiagnal matrix leads lower weight codes in code set. Our this disclosed program provides a spetial case that can avoid the problem. However, we revised the original code design of DVB-S2. From the BER of our codes, we can see that it is unnecessary for casecaded BCH codes for DVB-S2 channel coding, which makes the implementation of DVB-S2 channel coding to be complex and high cost.
Comments and Ratings on Yang's Files View all
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Updated File Comment by Comments Rating
30 Mar 2009 Alternative good LDPC codes for DVB-S2 The program can produce the parity check matrix of DVB-S2 with the size 5400*2700. Author: Yang Xiao Xiao, Yang

In our recent research for LDPC code design, we found that the bidiagnal matrix in parity check matrix will degrade the BER of the desired codes, including shortten DVB-S2 codes. The main reason is the bidiagnal matrix leads lower weight codes in code set. Our this disclosed program provides a spetial case that can avoid the problem. However, we revised the original code design of DVB-S2. From the BER of our codes, we can see that it is unnecessary for casecaded BCH codes for DVB-S2 channel coding, which makes the implementation of DVB-S2 channel coding to be complex and high cost.
29 Sep 2008 Girth 4 test for LDPC codes We need to know that Girth 4 of H will lead to a poor BER performance. The program can test whether Author: Yang Xiao anggraeni, silvia

Thank you very much ....
29 Sep 2008 Girth 4 of Gallager codes The program shows the girth 4 of Gallager codes Author: Yang Xiao anggraeni, silvia

Thank you for giving the simple m-file to test girth 4 cycle. It is very useful for me and my program .....

 
29 Sep 2008 Count the number of the girth 4 of LDPC codes The program can count the number of the girth 4 of LDPC codes. Author: Yang Xiao anggraeni, silvia

Thank you for sharing this m-file ...
29 Sep 2008 Construct the short length of QC LDPC codes without girth 4 and girth 6 The program constructs the short length of QC LDPC codes without girth 4 and girth 6 Author: Yang Xiao anggraeni, silvia

It is a very good example of LDPC codes without girth 4.Thank you for sharing the code ...
Top Tags Applied by Yang
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  • 38
coding theory, information theory, 2d polynomials, math, 2d continuousdiscrete
Files Tagged by Yang View all
  • 1 - 5 of
  • 11
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
27 Mar 2009 Screenshot Alternative good LDPC codes for DVB-S2 The program can produce the parity check matrix of DVB-S2 with the size 5400*2700. Author: Yang Xiao communications, coding theory, dvbs2 266 1
  • 4.0
4.0 | 1 rating
26 Oct 2007 Stability Test of AQM Network The program can determine the stability of AQM networks. Author: Yang Xiao aqm network, hybrid transform, 2d stability test 241 0
27 Aug 2007 Schur Stability Test of 2-D Polynomials The program can test the Schur stability of 2-D Polynomials. Author: Yang Xiao schur stability, 2d discrete systems, math, 2d polynomials 189 0
08 Aug 2007 Hurwitz-Schur Stability Test of 2-D Polynomials This program can test the Hurwitz-Schur Stability of 2-D Polynomials. Author: Yang Xiao hurwitzschur stabilit..., 2d polynomials, 2d continuousdiscrete 205 1
08 Aug 2007 Count the number of the girth 4 of LDPC codes The program can count the number of the girth 4 of LDPC codes. Author: Yang Xiao girth 4, algorithm, counting, coding theory, gallager, information theory 272 2
  • 3.33333
3.3 | 3 ratings
 

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