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 295 for “"Equalization"”.
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Equalization Using Graphical Models
We examine the use of graphical models for the equalization of digital communication channels with memory. Graphical models provide a framework in which the structure of large systems can be exploited to derive efficient estimation algorithms. Furthermore, properties of a graph on which an …
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Adaptive Equalization for Indoor Channels
This thesis describes the use of adaptive equalization techniques to compensate for the intersymbol interference (ISI) that results when digital data is transmitted over a multipath radio channel. The equalization structures covered in this work are the linear transversal equalizer (LTE), the …
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Coding and Equalization for Radio Channels
… channels introduce intersymbol interference. Equalization can be employed for such channels if the time variation is slow. In this thesis, three equalization methods which are compatible with trellis codes are considered: maximum-likelihood sequence estimation (MLSE), reduced-state sequence …
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The History of Illinois Equalization Aid
Made available in DSpace on 2014-12-10T18:47:41Z (GMT). No. of bitstreams: 1 7412286.pdf: 5596947 bytes, checksum: 97d3da0e7ed3e378d0c786f230955512 (MD5) Previous issue date: 1973
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Design and control of equalization tanks.
… a control strategy for the operation of an equalization tank upstream of a waste water treatment plant which utilizes the available equalization hold-up volume in such a manner that it reduces, optimally, diurnal fluctuations in both influent flow and load rates. The influent to a wastewater …
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Adaptive equalization for modem constellation identification
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1989.
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Joint Equalization and Decoding via Convex Optimization
… been some resistance to the deployment of turbo-equalization (TE) structures (with iterative detectors/decoders) in magnetic-recording systems because of error floors and the difficulty of accurately predicting performance at very low error rates. To address this problem for channels with memory, …
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A new sufficient-order blind equalization scheme
… a blind equalizer. The traditional blind equalization schemes, employing only adaptive finite impulse response (FIR) filter-based structures, perform poorly for maximum-phase communication channels having deep spectral nulls. This problem is due to the difficulty in modeling the inverse of …
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Wireless Channel Equalization in Digital Communication Systems
… There are two main categories of channel equalization techniques, supervised (training) and blind unsupervised (blind) modes. We have studied the application of a new and specially modified neural network requiring very short training period for the proper channel equalization in …
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Channel equalization for self-synchronizing chaotic systems
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Fractionally spaced equalization for high-speed links
As high-speed links enter the multi-Gb/s era, equalization and clock recovery designs become much more challenging. For conventional links, these two loops are separate with different performance metrics, resulting in sub-optimal performance. Fractionally spaced equalization (FSE) inherently …
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Direct-form adaptive equalization for underwater acoustic communication
Adaptive equalization is an important aspect of communication systems in various environments. It is particularly important in underwater acoustic communication systems, as the channel has a long delay spread and is subject to the effects of time- varying multipath fading and Doppler spreading. The …
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Optimal digital filter design for dispersed signal equalization
… error overall. The result is a simple optimized equalization filter that is stable, robust against cascading difficulties, and applicable to arbitrary waveforms. This filter is the cornerstone to a new all-digital electromagnetic pulse detection system.
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Turbo coding and equalization for wireless communication systems
… performance gain can be achieved through joint equalization and decoding. In this thesis, the suitability of turbo equalization as a means of achieving low bit error rate for high data communication systems over channels with intersymbol interference was investigated. A modified decision …
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Equalization Techniques For Multipath Mitigation in Aeronautical Telemetry
… thesis describes the application of adaptive equalization based on the constant modulus algorithm (CMA) and the decision-feedback minimum mean squared error (DF-MMSE) concept to the two compatible offset QPSK waveforms (FQPSK and SOQPSK-TG) that constitute the ARTM Tier-1 waveforms. An …
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Algorithms and Architectures for Joint Equalization and Decoding
Various linear turbo equalizer VLSI architectures are explored. Energy-efficient architectures that eliminate redundant operations and employing early termination achieve power savings up to 60%. To improve the throughput, a concurrent processing VLSI architecture is proposed, where SISO equalizers …
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Transistor level X-parameter simulations of equalization circuits
As frequencies have increased in circuits used for communication electronics, signal integrity concepts have become some of the foremost challenges that circuit designers must deal with. Specifically, high-speed links have been the focus of much of the research into mitigating signal integrity …
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