  A spatially "Mt. Fuji" coupled low-density parity check (LDPC) ensemble is a
modified version of the original spatially coupled (SC) LDPC ensemble. Its
desirable properties are first observed in experimentally. The decoding error
probability in the error floor region over the binary erasure channel (BEC) is
theoretically analyzed later. In this paper, as the last piece of the
theoretical analysis over the BEC, we analyze the decoding error probability in
the waterfall region by modifying the covariance evolution which has been used
to analyze the original SC-LDPC ensemble.
