Multi-Edge type Unequal Error Protection LDPC codes

Details Multi-Edge type Unequal Error Protection LDPC codes Multi-Edge type Unequal Error Protection LDPC codes

2011-01-31

arxiv.org/abs/1101.5985v1

Computer Science

Information Theory

Submitted to the IEEE International Symposium on Information Theory 2011. 5 pages

Scientific paper

Irregular low-density parity check (LDPC) codes are particularly well-suited for transmission schemes that require unequal error protection (UEP) of the transmitted data due to the different connection degrees of its variable nodes. However, this UEP capability is strongly dependent on the connection profile among the protection classes. This paper applies a multi-edge type analysis of LDPC codes for optimizing such connection profile according to the performance requirements of each protection class. This allows the construction of UEP-LDPC codes where the difference between the performance of the protection classes can be adjusted and with an UEP capability that does not vanish as the number of decoding iterations grows.

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