Error-Floors of the 802.3an LDPC Code for Noise Assisted Decoding

• Main Author: Tithi, Tasnuva Tarannum
• Format: Others
• Published: DigitalCommons@USU 2019
• Subjects: LDPC code; Error Correction Code; Stochastic Decoding; LDPC Error Floors; Electrical and Computer Engineering
• Online Access: https://digitalcommons.usu.edu/etd/7465; https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=8583&context=etd

In digital communication, information is sent as bits, which is corrupted by the noise present in wired/wireless medium known as the channel. The Low Density Parity Check (LDPC) codes are a family of error correction codes used in communication systems to detect and correct erroneous data at the receiver. Data is encoded with error correction coding at the transmitter and decoded at the receiver. The Noisy Gradient Descent BitFlip (NGDBF) decoding algorithm is a new algorithm with excellent decoding performance with relatively low implementation requirements. This dissertation aims to characterize the performance of the NGDBF algorithm. A simple improvement over NGDBF called the Re-decoded NGDBF (R-NGDBF) is proposed to enhance the performance of NGDBF decoding algorithm. A general method to estimate the decoding parameters of NGDBF is presented. The estimated parameters are then verified in a hardware implementation of the decoder to validate the accuracy of the estimation technique.