By computing the thresholds by the proposed EXIT chart
model, the optimum recoverable puncturing patterns are found
out. Table II shows these patterns along with their thresholds.
The thresholds of the optimum puncturing distributions without
any constraints as reported in [3] and [4] are also shown. It can
be seen that for lower rates, the thresholds for the optimum recoverable
patterns are close to the thresholds for optimum puncturing
distributions without any constraints. However at higher
rates, because of the small number of the puncturable VNs, the
thresholds for the optimum recoverable patterns become high.