Low Density Parity Check Codes

Basic machinery has been installed for constructing and analysing Low Density Parity Check codes (LDPC codes).

Features:

• Construction of LDPC codes from sparse matrices
• Deterministic LDPC constructions
• Random constructions from regular and irregular LDPC ensembles
• Iterative LDPC decoding
• Simulation of decoding performance on specified channels
• Density evolution on binary symmetric and Gaussian channels for given channel parameters, as well as threshold determination.
• Small database of good irregular LDPC ensembles.