On the Block Error Rate Performance of Spatially Coupled LDPC Codes for Streaming Applications

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


In this paper, we study the block error rate (BLER) performance of spatially coupled low-density parity-check (SC- LDPC) codes using a sliding window decoder suited for streaming applications. Previous studies of SC-LDPC have focused on the bit error rate (BER) performance or the frame error rate (FER) performance over the entire length of the code. Here, we consider protograph-based constructions of SC-LDPC codes in which a window decoder continuously outputs blocks in a streaming fashion, and we examine the BLER associated with these blocks.
We begin by examining the effect of protograph design on the streaming BLER by varying the block size and the coupling width in such a way that the overall constraint length of the SC-LDPC code remains constant. Next, we investigate the BLER scaling behavior with block size and coupling width. Lastly, we consider the effect of employing an outer code to protect blocks, so that small numbers of residual errors can be corrected by the outer code. Simulation results for the additive white Gaussian noise channel (AWGNC) are included and comparisons are made to LDPC block codes (LDPC-BCs).


External organisations
  • Bogazici University
  • New Mexico State University
  • University of Notre Dame
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Telecommunications


  • LDPC codes, spatially coupled codes, convolutional codes, streaming
Original languageEnglish
Title of host publicationProc. IEEE Information Theory Workshop
Place of PublicationCambridge, UK
PublisherIEEE--Institute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)978-1-5090-1090-5
Publication statusPublished - 2016 Sep 12
Publication categoryResearch
EventIEEE Information Theory Workshop - University of Cambridge, Cambridge, United Kingdom
Duration: 2016 Sep 122016 Sep 14


ConferenceIEEE Information Theory Workshop
Abbreviated titleITW
CountryUnited Kingdom
Internet address

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