Journal of Systems Engineering and Electronics ›› 2011, Vol. 33 ›› Issue (9): 2122-2125.doi: 10.3969/j.issn.1001-506X.2011.09.38

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Concatenated coding based on LDPC codes and super quasiorthogonal STBC

XIAO Hai-wei1, WANG Yang1, ZHANG Ji-liang2, ZHANG Qin-yu1   

  1. 1. Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China
    2. School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Online:2011-09-17 Published:2010-01-03

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Abstract:

In a 4×4 multiple input multiple output (MIMO) system, in order to achieve full diversity and full data rate transmission so as to reduce the bit error rate of the system and improve the reliability of the system, a scheme concatenating low density paritycheck (LDPC) codes and space time block codes (STBC) based on constellation rotation is put forward. At the same time, the optimum rotation angle is given. Simulation shows that the performance of this scheme is better than that of traditional schemes. When bit error ratio (BER) is 10-5, it has about 8 dB gain compared with the concatenated coding scheme of LDPC codes and orthogonal spacetime block codes.

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