Journal of Applied Sciences ›› 2009, Vol. 27 ›› Issue (2): 117-123.

• Communication Engineering • Previous Articles     Next Articles

Design of LDPC Coder-Decoder Based on Cyclic Shift Matrices

  

  1. School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
  • Received:2008-03-12 Revised:2008-12-19 Online:2009-04-01 Published:2009-04-01

Abstract:

In this paper, the LDPC codes used in DVB-S2 and WiMAX are analyzed. A universal structure based on cyclic shift matrices is presented for these codes. A partially parallel decoder is designed with a universal storage
resource reusing architecture and serial operation processors. This decoder has been implemented on an Altera EP2S60 platform, and can work for 8 064 bit code length at rates 7/8, 6/8, 5/8, 4/8 and 3/8. Test results show that its code throughput can approach 80 Mbit/s.

Key words: low density parity check (LDPC) codes, decoder, cyclic shift matrices

CLC Number: