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TTCN: A new approach for low-power split-row LDPC decoders

Shahrad, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1109/ISCAS.2015.7169068
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2015
  4. Abstract:
  5. Split-Row technique is proved to be one of the most effective methods to reduce the routing complexity of fully-parallel LDPC decoders. This technique is based on the idea of splitting each check node processor to multiple smaller processors. This paper introduces a new method, to increase the power-efficiency of Split-Row LDPC decoders. The proposed method is called trust to the truthful check node (TTCN), enabling the decoder to only depend on a portion of check node processors at specific decoding iterations. This leads to an average reduction of 30%-40% in the check node dynamic power consumption. This is achieved by means of trust to a minority of check node processors and gating the others. In fact, a great side effect of the proposed method is also a slight improvement in the error performance
  6. Keywords:
  7. Iterative decoding ; Check nodes ; Decoding iteration ; Dynamic power consumption ; Error performance ; LDPC decoder ; New approaches ; Parallel LDPC decoders ; Power efficiency ; Decoding
  8. Source: Proceedings - IEEE International Symposium on Circuits and Systems, 24 May 2015 through 27 May 2015 ; Volume 2015-July , 2015 , Pages 2001-2004 ; 02714310 (ISSN) ; 9781479983919 (ISBN)
  9. URL: http://ieeexplore.ieee.org/document/7169068