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Improving Code Diversity on Block-Fading Channels by Spatial Coupling

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Author

Summary, in English

Spatially coupled low-density parity-check (SC-LDPC) codes are considered for transmission over the block-fading channel. The diversity order of the SC-LDPC codes is studied using density evolution and simulation results. We demonstrate that the diversity order of the code can be increased, without lowering the code rate, by simply increasing the coupling parameter (memory) of a SC-LDPC code. For a (3,6)-regular SC-LDPC code with rate R = 1/2 and memory mcc = 4 a remarkable diversity of d = 10 is achieved without the need for any specific code structure. The memory of the SC-LDPC codes makes them robust against a non-stationary mobile-radio environment. The decoding of SC-LDPC codes using a latency constrained sliding window decoder is also considered.

Publishing year

2014

Language

English

Publication/Series

[Host publication title missing]

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • Spatial coupling
  • LDPC
  • block fading channel

Conference name

IEEE International Symposium on Information Theory (ISIT), 2014

Conference date

2014-06-29 - 2014-07-04

Conference place

Honolulu, HI, United States

Status

Published

Research group

  • Telecommunication Theory