Low Complexity Reliability Based Message Passing Decoder Architecture For Non Binary LDPC Codes
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2014, Vol 2, Issue 7
Abstract
Non-binary low-density parity-check (NBLDPC) codes can achieve better error-correcting performance than their binary counterparts at the cost of higher decoding complexity when the codeword length is moderate. The recently developed iterative reliability-based majority-logic NB-LDPC decoding has better performance complexity tradeoffs than previous algorithms. This paper first proposes enhancement schemes to the iterative hard reliabilitybased majority-logic decoding (IHRB-MLGD). Compared to the IHRB algorithm, our enhanced (E)- IHRB algorithm can achieve significant coding gain with small hardware overhead. Then low-complexity partial-parallel NB-LDPC decoder architectures are developed based on these two algorithms. Moreover, novel schemes are developed to keep a small proportion of messages in order to reduce the memory requirement without causing noticeable performance loss. In addition, a shift-message structure is proposed by using memories concatenated with variable node units to enable efficient partial-parallel decoding for cyclic NBLDPC codes. our proposed decoders have at least tens of times lower complexity with moderate coding gain loss.
Authors and Affiliations
Maddirala Kranthi Kiran| M.Tech Student (VLSI System Design) Srinivasa Institute of Science And Technology, kadapa Email-Id: mkranthi440@gmail.com, G Venkata Karthik| Assistant Professor Srinivasa Institute of Science and Technology, kadapa
Keywords
Related Articles
- EP ID EP16279
- DOI -
- Views 399
- Downloads 18
Location Privacy And Geo Based Applications
Using Geo-social networking like Apple's i Groups and Hot Potato, many people communicate with their neighbouring locations through their associates and their suggestions. Without sufficient location protection, howe...
Advances the Forward Security in Parallel Network File System using An Efficient and Reliable Key Exchange Protocols
In parallel file system we can disperse data over numerous nodes to permit simultaneous access by various errands of a parallel application. By play out the numerous errands in a parallel system is commonly to reduce...
Design and development of Tappered Spiral Helix Antenna for Broadband Applications
The Aim of the paper is to design and develop a tapered spiral helix antenna covering the frequency range 1- 18GHz. Tappered spiral helix antenna is a compact state-ofthe-art circularly polarized antenna, which works o...
Face Recognition Based Security System Using Sift Algorithm
Present days most of the door lock systems are organized by humans with the application of keys, secured password & unpredictable pattern to operate the door. The purpose of this paper is to help the users to develop...
Performance Analysis of Wavelet Packet Based SPHIT Algorithm
The necessity in image compression continuously grows during the last decade. An image compression algorithm based on wavelet packet transform is introduced. This paper introduces an implementation of wavelet packet...