An algebraic construction of QC-LDPC codes based on powers of primitive elements in a finite field and free of small ETSs
عنوان مقاله: An algebraic construction of QC-LDPC codes based on powers of primitive elements in a finite field and free of small ETSs
شناسه ملی مقاله: JR_ASYAZDT-6-1_011
منتشر شده در در سال 1398
شناسه ملی مقاله: JR_ASYAZDT-6-1_011
منتشر شده در در سال 1398
مشخصات نویسندگان مقاله:
Farzane Amirzade Dana - Faculty of Mathematical Sciences, Shahrood University of Technology, Shahrood, Iran.
Meysam Alishahi - Faculty of Mathematical Sciences, Shahrood University of Technology, Shahrood, Iran
Mohammad-Reza Rafsanjani Sadeghi - Department of mathematics and computer Science, Amirkabir University of Technology, Tehran, Iran
خلاصه مقاله:
Farzane Amirzade Dana - Faculty of Mathematical Sciences, Shahrood University of Technology, Shahrood, Iran.
Meysam Alishahi - Faculty of Mathematical Sciences, Shahrood University of Technology, Shahrood, Iran
Mohammad-Reza Rafsanjani Sadeghi - Department of mathematics and computer Science, Amirkabir University of Technology, Tehran, Iran
An (a,b) elementary trapping set (ETS), where a and b denote the size and the number of unsatisfied check nodes in the ETS, influences the performance of low-density parity-check (LDPC) codes. The smallest size of an ETS in LDPC codes with column weight ۳ and girth ۶ is ۴. In this paper, we concentrate on a well-known algebraic-based construction of girth-۶ QC-LDPC codes based on powers of a primitive element in a finite field \mathbb{F}_q. For this structure, we provide the sufficient conditions to obtain ۳\times n submatrices of an exponent matrix in constructing girth-۶ QC-LDPC codes whose ETSs have the size of at least ۵. For structures on finite field \mathbb{F}_q, where q is a power of ۲, all non-isomorphic ۳\times n submatrices of the exponent matrix which yield QC-LDPC codes free of small ETSs are presented.
کلمات کلیدی: QC-LDPC codes, girth, Tanner graph, elementary trapping set
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1579964/