High-throughput VLSI implementations of iterative decoders and related code construction problems

Vijay Nagarajan, Nikhil Jayakumar, Sunil Khatri, Olgica Milenkoviç

Research output: Contribution to conferencePaperpeer-review


In this paper, an efficient, fully-parallel Network of Programmable Logic Array (NPLA)-based realization of iterative decoders for structured LDPC codes is presented. The LDPC codes are developed in tandem with the underlying VLSI implementation technique, without compromising chip design constraints. The codes are based on a novel modification of array codes. This design methodology results in reduced routing congestion, a major problem in prior approaches. The operating power, delay and chip-size of the circuits are estimated, indicating that this implementation significantly outperforms presently used standard-cell based architectures. The described LDPC design method can accommodate widely different requirements, such as those arising from recording and wireless channel applications.

Original languageEnglish (US)
Number of pages5
StatePublished - 2004
Externally publishedYes
EventGLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States
Duration: Nov 29 2004Dec 3 2004


OtherGLOBECOM'04 - IEEE Global Telecommunications Conference
Country/TerritoryUnited States
CityDallas, TX

ASJC Scopus subject areas

  • General Engineering


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