Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"error correction codes"”.
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Noise-Centric Decoding
Maximum Likelihood (ML) decoding of forward error correction codes is known to be optimally accurate, but is not used in practice due to the lack of a feasible implementation. As the common approach in coding theory is a code-centric one, designing a ML decoder is a challenging code-specific task. …
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Second order error correction in quantum computing
Error correction codes are necessary for the development of reliable quantum computers. Such codes can prevent the lost of information from decoherence caused by external perturbations. This thesis evaluates a five qubit code for correcting second order bit-flip errors. The code consists of …
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Practical considerations in the design of cellular digital packet data (CDPD) equipment
… (GMSK), and a detailed analysis of Reed-Solomon error correction codes.
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A Smart Implementation of Turbo Decoding for Improved Power Efficiency
Error correction codes are a means of including redundancy in a stream of information bits to allow the detection and correction of symbol errors during transmission. The birth of error correction coding showed that Shannon's channel capacity could be achieved when transmitting information through …
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A model for analysis of the effects of redundancy and error correction on DRAM memory yield and reliability
Manufacturing a DRAM module that is error free is a very difficult process. This process is becoming more difficult when only utilizing the current methods for producing an error free DRAM. Error correction codes (ECCs) and cell replacement are two methods currently used in isolation of each other …
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Quantum Algebraic Geometry Codes
Quantum error correction is an essential aspect of quantum information theory, providing protection for quantum states against noise and decoherence. This thesis investigates the construction of quantum error correction codes derived from classical algebraic geometry (AG) codes. We present two …
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Benchmarking measurement-based quantum computation on graph states
… the quality of graph states created with error-prone interactions through quantum wire teleportation experiments. By leveraging underlying symmetry, we will design graph states as measurement-based quantum error correction codes to protect against perturbations, such as ZZ crosstalk in …
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Implementation and Performance of an Improved Turbo Decoder on a Configurable Computing Machine
Turbo codes are a recently discovered class of error correction codes that achieve near-Shannon limit performance. Because of their complexity and highly parallel nature, turbo-coded applications are well suited for configurable computing. Field-programmable gate arrays (FPGAs), which are the main …
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RECOVERY AND RECONSTRUCTION IN QUANTUM SYSTEMS
… namely the recovery channel and the quantum error correction, and various scenarios in which they are applied. The first scenario is the perfect recovery in the Gaussian fermionic systems. When therelative entropy between two states remains unchanged under a channel, the perfect recovery can …
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Study of Modulation and Error Control Coding in Thick Film Digital Magnetic Recording
… concerned with the application of Modulation and Error Correction codes to Digitally Recorded Magnetic Data.<br/><br/>The effects of these coding schemes were measured against bitshift errors which are induced by different Non Clockloss Error Mechanisms. These Error mechanisms are Noise and Inter …
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Iterative decoding for rate adaptive forward error correction on the mobile satellite channel.
In this thesis, we examine rate adaptive forward error correction codes for the mobile satellite channel. We are especially interested in codes that can be iteratively decoded. Multilevel coded modulations are considered: partitioning of constellations, coding principle and iterative decoding are …
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Application-driven Intersections between Information Theory and Machine Learning
… coding scheme, developed from the concept of error correction codes, for bio-molecular profiling. We show through simulations that, with a learning-based encoder and a maximize a posterior (MAP) decoder, our scheme significantly outperforms existing schemes in reducing the false negative rate …
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Probabilistic Approach to Avoid Uncorrectable Bit Errors in Storage Systems
… significant risk to the integrity ofdata. While error correction codes (ECC) can recover the majority of the errors, a non-negligible portion of them escape ECC, referred to as uncorrectable errors. As the scale of storage systems increases, the mean time between uncorrectable errors is reduced …
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Distributed Deep Learning in IoT: Splitting Neural Networks in Inference and Training
… parallel and one device works with the server. Error Correction Codes (ECC) are also applied to deal with the errors during data transmitting. Our scheme is to find the optimal method and code rate of ECC to maximize the accuracy within a specific delay threshold. Experiment results show that …
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Multiuser detection for CDMA systems with convolutional coding
… improve the capacity of COMA systems. Error correction coding is also an important technique for overcoming severe channel degradation. In this project, we investigate the performance of multiuser receivers which use the combination of interference cancellation techniques and error …
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Graph Representation of Topological Stabilizer States
… these in topological stabilizer quantum error correction codes, are currently the focus of intense activity because of their potential for fault-tolerant operations. While every stabilizer state maps to a graph state under local Clifford operations, the graphs associated with topological …
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Efficient signal, code, and receiver designs for MIMO communication systems
… design a family of structured space-time block codes that we call tilted-QAM codes. It achieves the optimal infinite-delay tradeoff with the necessary minimum delay of two, answering a previously open question. It uses constellation rotation ideas to effectively spread information across space …
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Novel irregular LDPC codes and their application to iterative detection of MIMO systems
Low-density parity-check (LDPC) codes are among the best performing error correction codes currently known. For higher performing irregular LDPC codes, degree distributions have been found which produce codes with optimum performance in the infinite block length case. Significant performance …
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Single event upset hardened CMOS combinational logic and clock buffer design
… as a wrong logic level causing failure. Soft errors or Single Event Upsets (SEU) caused by radiation strikes are one of the main failure modes in a VLSI circuit. Previous work predicts that soft error rate may dominate the failure rate in VLSI circuit compared to all other failure modes put …
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Multiaccess and fading in communication networks
… the impact of this interference on the design of error correction codes for reliable data transmission. At the physical layer of the wireless network, the phenomenon of multi-user interference is captured by the multiaccess (many-to-one) channel model. The set of all data rates at which reliable …
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