Figure 4From: Jointly optimized rate-compatible UEP-LDPC codes for half-duplex co-operative relay networksStructure of the rate-compatible parity-check matrix H 2 for the half-duplex relay code C 2 . H2 is composed of H1, which is a non-zero parity-check matrix corresponding to the code C 1 , a zero matrix O and non-zero matrices A and B.Back to article page