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Data traffic volume including video transmission is increasing exponentially over the past decade. The demand for ultra-high speed wired and wireless communication systems is also growing in an unprecedented pace. In providing ultra-high data transmission rate as well as reliable communications, error correction codes are playing an ever important role. They can ensure received data being highly reliable...
The possibility of describing the encoding and decoding procedures Bose-Chaudhuri-Hocquenghem codes using the summation operations modulo 2 is researched. This allows you to simplify these procedures and improve efficiency by correcting the error of the triplicate. There identified coding equations and triangular match tables: the syndrome — the distortion of the position.
The decoding problem is addressed in this paper for the scenario that convolutional codes are employed at the source node of the network with linear or convolutional network coding for error correction. Since network errors may disperse or neutralize due to network coding, decoding cannot be done at sink nodes merely based on the minimum Hamming distance between the received and sent sequence. Source...
Several types of insertion/deletion/substitution error correction codings have been proposed for channels with imperfect synchronization. Most of the conventional coding schemes assume insertion/deletion errors of bit granularity, while in some applications, e.g. bit patterned media recording, insertion/deletion errors occur as a result of accumulation of small synchronization errors. This paper considers...
The emergence of networks of many devices in the context of cyber-physical systems motivates novel solutions for communication over random access channels. Currently deployed random access protocols attempt to avoid collisions, and target the performance of a scheduled multiple access system (a strategy known to be only suboptimal from the information-theoretic perspective). In contrast, in this paper,...
We construct balanced and sparse generator matrices for Tamo and Barg's Locally Recoverable Codes (LRCs). More specifically, for a cyclic Tamo-Barg code of length n, dimension k and locality r, we show how to deterministically construct a generator matrix where the number of nonzeros in any two columns differs by at most one, and where the weight of every row is d + r − 1, where d is the minimum distance...
This paper presents channel model and error correction coding for correlated insertion/deletion errors in high-density magnetic recording media. Simulation results show that the bit error rate can be lowered by the presented coding.
Low-density parity-check (LDPC) codes are known for superior performance over a wide range of codes for communication and memory systems. In many practical scenarios, adaptive ECC system is preferred that can adapt to various codes with varying channel conditions since the behavior of errors changes with time and space. This paper presents two architectural designs for efficient encoding of LDPC codes...
Recently, the requirement for non-volatile memory on embedded systems has increased because they can be applied with normally-off and power gating technologies to. However, they have a lower endurance than volatile memories. When data is encoded as a write-reduction code appropriately, the endurance of non-volatile memory can be enhanced by writing the encoded data into the memory. We propose a highly...
Reliability of Network-on-Chip has become a critical problem because of the aggressive technology scaling. A variety of transmission mechanism to tolerant the bit errors has been proposed to achieve the best trade-off between performance and overhead. In this work, a transmission mechanism for NoC based on a novel combination of error detection, error correction, and retransmission is proposed. The...
An erasure-coded archival file storage system is presented using a chunk-based deduplication mechanism and fountain codes for space/time efficient operation. Unlike traditional archival storage, this proposal considers the deduplication operation together with correction coding in order to provide a reliable storage solution. The building blocks of deduplication and fountain coding processes are judiciously...
We study potential enhancement of the read access speed in high-performance solid-state drives (SSDs) by coding, given speed variations across the multiple flash interfaces and assuming occasional local memory failures. Our analysis is based on a queuing model that incorporates both read request failures and node failures. It provides a clear picture on the coding-overhead and read-access-time trade-offs...
To improve the reliability of Triple-Level Cell (TLC) NAND flash memory, Advanced Error Prediction (AEP) low-density parity-check (LDPC) ECC with Error Dispersion Coding is proposed. In the conventional LDPC, error-correction capability is degraded due to burst errors [1]. To reduce burst errors and improve the error-correction capabilities of LDPC, this paper proposes Error Dispersion Coding (EDC)...
We propose an energy efficient error control code scheme which utilizes the intrinsic property of Hamming code to avoid crosstalk on the computer bus. By using the coding scheme in the noisy deep sub-micron process environment, the proposed scheme can achieve both error prevention and error correction. Meanwhile comparing to the (8,4) Hamming code (8-bit data bus with 4 information bits) with the...
Concatenated codes proposed by Forney are used extensively in digital communication. In this paper, concatenated kernel codes, a class of group codes is constructed with inner code and outer code. Binary and non — binary variants of concatenated kernel code is discussed with example. Constructed concatenated kernel code is represented over trellis. Minimal trellis representation is given for the concatenated...
This paper presents a bandwidth efficient coded modulation scheme based on orthogonal M-ary QAM (OMQAM) modulation. Orthogonal M-ary QAM is a coded multi-quadrature amplitude modulation that utilizes a block of bi-orthogonal code to map a block of data. In this scheme, information data blocks are coded using a block of orthogonal codes which are then modulated by using M-ary QAM. At the receiver the...
This paper investigates the feasibility of a unified processor architecture to enable error coding flexibility and secure communication in low power Internet of Things (IoT) wireless networks. Error coding flexibility for wireless communication allows IoT applications to exploit the large tradeoff space in data rate, link distance and energy-efficiency. As a solution, we present a light-weight Galois...
External radiations create soft errors which are turning into an undeniable critical issue. Customarily, Single Error Correction (SEC) code which can detect and correct 1-bit error per memory word is used to rectify soft errors. As errors turn out to be more common, the SEC methodology becomes inefficient. In this paper, Horizontal-Vertical Parity and Diagonal Hamming (HVPDH) method is proposed for...
This article is described to research of noise stability providing different methods of data communication net-works as a part of control systems. Importance and significance of redundancy encoding and feedback for pro-viding reliable information transfer between elements and devised of control systems are showing. The analytic methods of redundancy codes (Reed-Solomon and convolution) construction,...
QR i.e. "Quick Response" code is a 2D matrix code that is designed by keeping two points under consideration, i.e. it must store large amount of data as compared to 1D barcodes and it must be decoded at high speed using any handheld device like phones. QR code provides high data storage capacity, fast scanning, omnidirectional readability, and many other advantages including, error-correction...
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