Computer Science – Information Theory
Scientific paper
2011-02-02
Computer Science
Information Theory
Submitted to IEEE Trans. Communications
Scientific paper
We propose a technique to design finite-length irregular low-density parity-check (LDPC) codes over the binary-input additive white Gaussian noise (AWGN) channel with good performance in both the waterfall and the error floor region. The design process starts from a protograph which embodies a desirable degree distribution. This protograph is then lifted cyclically to a certain block length of interest. The lift is designed carefully to satisfy a certain approximate cycle extrinsic message degree (ACE) spectrum. The target ACE spectrum is one with extremal properties, implying a good error floor performance for the designed code. The proposed construction results in quasi-cyclic codes which are attractive in practice due to simple encoder and decoder implementation. Simulation results are provided to demonstrate the effectiveness of the proposed construction in comparison with similar existing constructions.
Ahmadian-Attari Mahmoud
Asvadi Reza
Banihashemi Amir H.
No associations
LandOfFree
Design of Finite-Length Irregular Protograph Codes with Low Error Floors over the Binary-Input AWGN Channel Using Cyclic Liftings does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Design of Finite-Length Irregular Protograph Codes with Low Error Floors over the Binary-Input AWGN Channel Using Cyclic Liftings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Design of Finite-Length Irregular Protograph Codes with Low Error Floors over the Binary-Input AWGN Channel Using Cyclic Liftings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-81109