A Survey on Methods of Parallel Concatenation of LDPC Codes
Aswathy G P1, Niyas K Haneefa2
1Aswathy G P, PG Scholar, Department of Electronics and Communication Engineering, Mar Baselios College of Engineering and Technology, Thiruvananthapuram (Kerala), India.
2Niyas K Haneefa, Assistant Professor, Department of Electronics and Communication Engineering, Mar Baselios College of Engineering and Technology, Thiruvananthapuram (Kerala), India.
Manuscript received on 15 April 2016 | Revised Manuscript received on 25 April 2016 | Manuscript Published on 30 April 2016 | PP: 124-129 | Volume-5 Issue-4, April 2016 | Retrieval Number: D4509045416/16©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: From the time of discovery of Turbo codes, parallel concatenation of codes has become one of the fieriest topics in code theory. In the recent years, there has been a remarkable advancement in LDPC codes and has seen them outshine turbo codes in terms of performance especially in the error floor and higher code rate. On the other hand, fully parallel LDPC decoder for longer block length suffers from prohibitive implementation complexity, due to the pervasive connectivity in the bipartite graph. Subsequently, in order to achieve better performance for longer codes with reduced decoding complexity, different methods for parallel concatenation of LDPC codes were introduced. Parallel concatenation of LDPC codes provides the advantage of breaking an equivalently long and highly complex LDPC code into multiple small and less complex LDPC codes to distribute the encoding and decoding load. This could offer scalability and scope for improving the performance of LDPC codes in practical delay-sensitive and energy-aware applications. This paper gives an overview of different methods of parallel concatenation of LDPC codes.
Keywords: LDPC, Parallel Concatenation, PCGC, Turbo Codes.
Scope of the Article: WSN