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
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
