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Space-Time LDPC with Layered Structure for MIMO Systems

  • Jianxuan Du
  • Ye Geoffrey Li
  • Daging Gu
  • Andreas Molisch
  • Jinyun Zhang
Publiceringsår: 2004
Språk: Engelska
Dokumenttyp: Konferensbidrag


In this paper, we incorporate the layered structure with low-density parity-check codes (LDPC)

to develop a quasi-block diagonal LDPC space-time structure. The lower triangular structure of

the parity check matrix introduces correlation between layers. In addition, each layer, as a part

of the whole codeword, can be decoded while taking information from other undetected layers to

improve the decoding performance. Belief propagation of the current layer is stopped as soon as

those parity checks involving only the current layer and detected layers are satisfied. Simulation

shows that the proposed system outperforms the conventional V-BLAST by 0.5 dB at WER=1%.

Wireless Personal Multimedia Communications (WPMC)


  • Electrical Engineering, Electronic Engineering, Information Engineering


IEEE Wireless Personal Multimedia Communications (WPMC) 2004

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