Implementation Aspects of LDPC Convolutional Codes
Författare
Summary, in English
Potentially large storage requirements and long initial decoding delays are two practical issues related to the decoding of low-density parity-check (LDPC) convolutional codes using a continuous pipeline decoder architecture. In this paper, we propose several reduced complexity decoding strategies to lessen the storage requirements and the initial decoding delay without significant loss in performance. We also provide bit error rate comparisons of LDPC block and LDPC convolutional codes under equal processor (hardware) complexity and equal decoding delay assumptions. A partial syndrome encoder realization for LDPC convolutional codes is also proposed and analyzed. We construct terminated LDPC convolutional codes that are suitable for block transmission over a wide range of frame lengths. Simulation results show that, for terminated LDPC convolutional codes of sufficiently large memory, performance can be improved by increasing the density of the syndrome former matrix.
Publiceringsår
2008
Språk
Engelska
Sidor
1060-1069
Publikation/Tidskrift/Serie
IEEE Transactions on Communications
Volym
56
Issue
7
Dokumenttyp
Artikel i tidskrift
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- spatial coupling
- LDPC codes
- LDPC convolutional codes
Status
Published
Forskningsgrupp
- Telecommunication Theory
ISBN/ISSN/Övrigt
- ISSN: 0090-6778