Generalized low density codes are built by applying a Tanner-like construction to binary recursive systematic convolutional codes. The Gallager-Tanner construction is restricted to 2 levels only. We describe the structure of a GLD code and show how to compute its ensemble performance. We also prove that RSC based GLD codes are asymptotically good. A parity-check interpretation of turbo codes is...

The range of exercise intensities that elicit high fat oxidation rates (FOR) in youth and the influence of pubertal status on peak FOR are unknown. In a longitudinal design, we compared FOR over a range of exercise intensities in a small cohort of developing prepubertal male subjects. Five boys all at Tanner stage 1 (ages 11-12 yr) and nine men (ages 20-26 yr) underwent an incremental cycle erg...

In this paper, the cycles of Tanner’s (3, 5) quasi-cyclic (QC) low-density parity-check (LDPC) codes are analyzed and their girth values are derived. The conditions for the existence of cycles of lengths 4, 6, 8, and 10 in Tanner’s (3, 5) QC LDPC codes of length 5p are expressed in terms of polynomial equations in a 15-th root of unity of the prime field Fp. By checking the existence of solutio...

Despite the great promises that resistive random access memory (ReRAM) has shown as next generation of non-volatile technology, its crossbar array structure leads to a severe sneak path interference signal read back from cell. In this paper, we first propose novel belief propagation (BP) based detector for in ReRAM. Based on conditions occur and dependence states cells are involved path, Tanner...

Riddell MC, Jamnik VK, Iscoe KE, Timmons BW, Gledhill N. Fat oxidation rate and the exercise intensity that elicits maximal fat oxidation decreases with pubertal status in young male subjects. J Appl Physiol 105: 742–748, 2008. First published June 5, 2008; doi:10.1152/japplphysiol.01256.2007.—The range of exercise intensities that elicit high fat oxidation rates (FOR) in youth and the influenc...

OBJECTIVE To examine the relationship of fasting indicators of insulin sensitivity with a more invasive measure of insulin sensitivity (frequently sampled intravenous glucose tolerance test [FSIVGTT]) and the effect of Tanner stage and ethnicity on that relationship. RESEARCH DESIGN AND METHODS Data were analyzed from 149 overweight girls (97 Hispanic and 52 African American) who were either ...

We present a new combinatorial characterization for local optimality of a codeword in an irregular Tanner code. The main novelty in this characterization is that it is based on a linear combination of subtrees in the computation trees. These subtrees may have any degree in the local code nodes and may have any height (even greater than the girth). We expect this new characterization to lead to ...

This paper presents a geometric approach to the construction of low-density parity-check (LDPC) codes. Four classes of LDPC codes are constructed based on the lines and points of Euclidean and projective geometries over finite fields. Codes of these four classes have good minimum distances and their Tanner graphs have girth 6. Finite-geometry LDPC codes can be decoded in various ways, ranging f...