Title of article :
Generalized Low-Density Parity-Check Coding Scheme with Partial-Band Jamming
Author/Authors :
Li, Qi Tsinghua University - Department of Electronic Engineering, China , Qu, Xinru Tsinghua University - School of Aerospace, China , Yin, Liuguo Tsinghua University - School of Aerospace, China , Lu, Jianhua Tsinghua University - Department of Electronic Engineering, China
Abstract :
In this study, a class of Generalized Low-Density Parity-Check (GLDPC) codes is designed for data transmission over a Partial-Band Jamming (PBJ) environment. The GLDPC codes are constructed by replacing parity-check code constraints with those of nonsystematic Bose-Chaudhuri-Hocquenghem (BCH), referred to as Low-Density Parity-Check (LDPC)-BCH codes. The rate of an LDPC-BCH code is adjusted by selecting the transmission length of the nonsystematic BCH code, and a low-complexity decoding algorithm based on messagepassing is presented that employs A Posteriori Probability (APP) fast BCH transform for decoding the BCH check nodes at each decoding iteration. Simulation results show that the LDPC-BCH codes with a code rate of 1/8.5 have a bit error rate performance of 1 ×10^-6 at signal-noise-ratios of - 6.97 dB, - 4.63 dB, and 2.48 dB when the fractions of the band jammed are 30%, 50%, and 70%, respectively.
Keywords :
Generalized Low , Density Parity , Check (GLDPC) code constraint , nonsystematic BCH code , a posteriori probability fast BCH transform
Journal title :
Tsinghua Science and Technology
Journal title :
Tsinghua Science and Technology
