The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Comparison of LDPC Block and LDPC Convolutional Codes Based on their Decoding Latency

På svenska

Author

Summary, in English

We compare LDPC block and LDPC convolutional codes with respect to their decoding performance under low decoding latencies. Protograph based regular LDPC codes are considered with rather small lifting factors. LDPC block and convolutional codes are decoded using belief propagation. For LDPC convolutional codes, a sliding window decoder with different window sizes is applied to continuously decode the input symbols. We show the required Eb/N0 to achieve a bit error rate of 10-5 for the LDPC block and LDPC convolutional codes for the decoding latency of up to approximately 550 information bits. It has been observed that LDPC convolutional codes perform better than the block codes from which they are derived even at low latency. We demonstrate the trade off between complexity and performance in terms of lifting factor and window size for a fixed value of latency. Furthermore, the two codes are also compared in terms of their complexity as a function of Eb/N0. Convolutional codes with Viterbi decoding are also compared with the two above mentioned codes.

Publishing year

2012

Language

English

Pages

225-229

Publication/Series

2012 7th International Symposium on Turbo Codes and Iterative Information Processing (ISTC)

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • spatial coupling
  • LDPC codes
  • LDPC convolutional codes

Conference name

International Symposium on Turbo Codes & Related Topics (ISTC), 2012

Conference date

2012-08-27 - 2012-08-31

Conference place

Gothenburg, Sweden

Status

Published

Research group

  • Telecommunication Theory

ISBN/ISSN/Other

  • ISSN: 2165-4700
  • ISBN: 978-1-4577-2114-4