Fujitsu Corporation

Institut Telecom/telecom Bretagne

Get/enst-bretagne

Frederic Guilloud

Dai Kimura

Ramesh Mahendra Pyndiah

A parity check matrix construction method for constructing a non-binary parity check matrix defining a non-binary LDPC code. In particular, a parity check matrix construction method for setting codewords able to stably give a superior decoding performance is provided. For this reason, the non-binary non-zero elements are selected so that the determinants of the partial matrices corresponding to the cycles in the parity check matrix do not become 0. Due to this, a non-binary parity check matrix able to give large weight codewords is constructed.

Construction of parity-check matrices for non-binarys LDPC codes

A wireless communication system constructed by a MIMO antenna system and transmitting information from a transmitter having Nt number of transmitting antennas to a receiverhaving Nr number of receiving antennas. The receiverof this wireless communication systemlinking the inputs and outputs between a demodulating unitdemodulating the input signals from receiving antennasand a decoding unitreceiving as input that demodulation output and decoding the non-binary LDPC code of the GF(q) one-to-one under predetermined conditions to enable the inputs and outputs of this demodulating unitand decoding unitto be directly connected and thereby improve the decoding characteristic. That predetermined condition is preferably q=2.

Growing community of inventors

Brest, France

Frederic Guilloud