This survey paper provides fundamentals in the design of LDPC codes. To provide a target for code designer, we first summarize EXIT chart technique determining(near-)optimal degree distributions ensembles. We also demonstrate simplicity representing codes by protographs and how this naturally leads to quasi-cyclic The is then extended special case protograph-based Next, present several approaches which incorporate one or more accumulators, including accumulatorbased second half surveys...

While LDPC codes have been widely acclaimed in recent years for their near-capacity performance, they not found way into many important applications. For some cases, this is due to increased decoding complexity relative the classical coding techniques. other inability reach very low bit error rates (e.g., 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-12</sup> ) at signal-to-noise ratios (SNRs), a consequence of rate floor phenomenon...

In this letter, we present design techniques for structured irregular repeat-accumulate (S-IRA) codes with low error-rate floors. These S-IRA need not be quasi-cyclic, permitting flexibility in code dimension, length, and rate. We a simple ensemble estimate of the level floor finite-length IRA on additive white Gaussian noise channel. This performance provides guidance choice column weights which yield also two algorithms accompanied by software- hardware-based results demonstrate their...

In a recent paper, Yang et al. presented the class of extended irregular repeat-accumulate (eIRA) codes which are efficiently encodable LDPC possessing very low error-rate floors and appropriate for code rates 1/2 or greater. While encodable, left-most (n-k)-by-k submatrix an eIRA parity-check matrix is random in nature, making efficient decoder implementation problematic. present we structured codes. We first some ensemble results general codes, after subclass (SeIRA) defined. Software-...

The high cost of locating faults in programs has motivated the development techniques that assist fault localization by automating part process searching for faults. A method to automatically locate faulty code using failure-causing input combination combinatorial testing is firstly presented this paper. Firstly, four types locations are figured out parameters understand context fault. Secondly, based on locations, an algorithm proposed isolate candidate and obtain cause-effect chains...

A signal scrambling based joint blind channel estimation, activity detection, and data decoding (SS-JCAD) scheme is proposed for coded massive random access. This technique imposes symbol-wise phase rotation to each user's modulated data, the pattern serves as a user-specific signature which free from any bandwidth expansion or pilot signaling overhead. Building on this signature, we further propose simple yet efficient receiver design, integrates state information (CSI) estimation module...

Background The WFS1 gene encodes the protein wolframin, which is crucial for maintaining endoplasmic reticulum homeostasis. Variants in this are predominantly associated with Wolfram syndrome and have been implicated other disorders such as diabetes mellitus psychiatric diseases, increases rate of clinical misdiagnosis. Methods Patients were diagnosed early-onset unclassified according to their laboratory data. We performed whole-exome sequencing (WES) 165 patients, interpreting variants...

Cache plays a crucial role in improving system response time, alleviating server pressure, and achieving load balancing various aspects of modern information systems. The data prefetch cache replacement algorithms are significant factors influencing caching performance. Due to the inability learn user interests preferences accurately, existing rule-based mining fail capture unique features access behavior sequence, resulting low hit rates. In this article, we introduce BERT4Cache, an...

In a recent paper, Yang et at. presented the class of extended irregular repeat-accumulate (eIRA) codes which are efficiently encodable LDPC possessing very low error-rate floors and appropriate for code rates 1/2 or greater. While encodable, left-most (n - k)-by-k submatrix an eIRA parity-check matrix is random in nature, making efficient decoder implementation problematic. present we structured codes. We first some ensemble results general codes, after subclass defined. Software...

New advancements in the hardware of handheld devices (HDs) have opened up a new way for applications home healthcare field. Applying wearable technology to long-term physiological monitoring is one most feasible and satisfying methods healthcare. As HDs become more popular cheaper, designing telemedicine system with will basically save cost promote user adoption. This paper describes design implementation comprised an elastic chest belt (ECB), HD, remote service center (RSC). The...

In this paper, we design a kind of robust rateless multi-user code, which is called spatially coupled repeat-accumulate-repeat (SC-RA-R) for the interleave-division multiple-access (IDMA) system. The code constructed by serially concatenating fixed outer repeat-accumulate (SC-RA) with an adjustable inner irregular repetition code. It achieves property simply adjusting parameters IDMA system proposed SC-RA-R codes can adapt to varying channel qualities and number users via while keeping...

The anonymity and unsupervision of mobile application crowdsourced testing, makes the tester easy to slacken or cheat on test tasks, resulting in a drop quality testing. To solve problem, this paper proposes method for assessing reputation testers based fuzzy mathematics. This closely integrates testing features. By introducing evaluation mechanism, building assessment model studying calculation update it achieves reasonable can effectively screen out high testers, thus ensuring

In this paper, we present design techniques for structured extended irregular repeat-accumulate (SeIRA) codes with low error-rate floors. These SeIRA permit flexibility in code dimension, length, and rate, while facilitating encoder/decoder implementation due to their structure. We a algorithm software-based performance results which demonstrate Then two algorithms multi-rate families implementable by single encoder/decoder. Lastly, the performances of on single-carrier independent Rayleigh...

Community search, retrieving the cohesive subgraph which contains query vertex, has been widely touched over past decades. The existing studies on community search mainly focus static networks. However, real-world networks usually are temporal where each edge is associated with timestamps. previous methods do not work when handling We study problem of identifying significant engagement to user-specified belongs. Specifically, given an integer k and a vertex u, then we for H satisfies (i) u...

Compute-forward multiple access (CFMA) is a new-type multiple-access technique in recent years, whose most significant advantage that it can achieve the whole capacity region of channel (MAC) without time sharing or rate splitting. In this work, we propose modified protograph-based extrinsic information transfer (P- EXIT) to analyse and optimize iterative decoding performances quasi-cyclic low density parity check (QC-LDPC) codes CFMA. addition, kind extending designed construct nested...