Suppose that the LDPC block code, defined by the transposed parity-check matrix of 8.1, is used together with the BEC and that the received sequence is r = 1 ∆ 0 ∆ 0 ∆ XXXXXXXXXX, where ∆ is the...

Suppose that the LDPC block code, defined by the transposed parity-check matrix of 8.1, is used together with the BEC and that the received sequence is r = 1 ∆ 0 ∆ 0 ∆ 0 1 1 0, where ∆ is the erasure symbol. Use the belief propagation algorithm for decoding.