Title of article
Low Complexity LDPC Decoder with Modified Sum-Product Algorithm
Author/Authors
Qian, Chen Tsinghua University - Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, China , Lei, Weilong Tsinghua University - Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, China , Wang, Zhaocheng Tsinghua University - Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, China
From page
57
To page
61
Abstract
This paper describes an efficient implementation of the Sum-Product Algorithm (SPA) within a LowDensity Parity Check (LDPC) code decoder, where a horizontal process correction term is used to improve the decoding performance of the Min-Sum algorithms. The correction term is implemented as a look-up table. The algorithm uses the correction term redundancy by means of a coordinate transformation to reduce the hardware complexity. Simulations and hardware tests indicate that the decoding performance is very good with the appropriate look-up table.
Keywords
Low Density Parity Check (LDPC) code , decoding , look , up table
Journal title
Tsinghua Science and Technology
Journal title
Tsinghua Science and Technology
Record number
2535524
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