Alternative good LDPC codes for DVB-S2

The program can produce the parity check matrix of DVB-S2 with the size 5400*2700.

Description

In our following paper, we find that the shortten codes of DVB-S2 have some problems,this program can provide a good DVB-S2 LDPC code without cascaded BCH codes.
      [1] Yang Xiao, Kiseon Kim, "Alternative good LDPC codes for DVB-S2", 9th International Conference on Signal Processing, 2008 (ICSP 2008), Beijing, 26-29 Oct. 2008, page(s): 1959-1962, ISBN: 978-1-4244-2178-7, INSPEC Accession Number: 10411270, Digital Object Identifier: 10.1109/ICOSP.2008.4697527, Current Version Published: 2008-12-08
     The paper can be downloaded from Web site of IEEE Explore.

• MATLAB release: MATLAB 6.5 (R13)

[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.

[Yang Xiao]

For Chinese learners of LDPC, my recent book "MIMO Multi-Antenna Wireless Communication Systems" has provided detailed design examples for good QC LDPC codes.

Some of designs of our good LDPC codes have applied patents, they can be found in our disclosed patents.

[sudheer]

give the matlab codes for multiband rectangular patch antenna about its radiation pattern,scatering matrix