Turbo$-$LDPC Codes

Describe the curves that represents the performance $($P$($E$)$ as a function of Eb$/$No$)$ of a turbo code, indicating the

role of the iterations and of the interleaver.

Describe the basic idea of the bit$-$fl$$ipping algorithm for the hard decoding of an LDCP code.

Describe the basic idea of the EXIT charts.