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 48 for “"Intersymbol Interference"”.
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Mitigating the Effects of Intersymbol Interference: Algorithms and Analysis
In addition to asymptotic analysis of receivers for ISI channels, we also propose a joint maximum likelihood detection and decoding scheme for use when the channel is unknown to the receiver. Rather than employing training data to generate an estimate of the channel, the proposed receiver views the …
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Coding for the Control of Intersymbol Interference in Baseband Channels
Made available in DSpace on 2014-12-12T20:54:53Z (GMT). No. of bitstreams: 1 7913430.pdf: 3958903 bytes, checksum: 42a429b8e06f742d193d3ad25d669840 (MD5) Previous issue date: 1978
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Direct detection optical systems : intersymbol interference and electrical filter designs
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Coding for satellite channels with co-channel and intersymbol interference
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1983.
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An information theoretic study of reduced-complexity receivers for intersymbol interference channels
… over a discrete-time additive Gaussian intersymbol interference channel typically grows exponentially with the duration of the channel impulse response. Consequently, practical sub-optimal receivers are often designed as though the channel impulse response were shorter than it is. While …
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Reduction of intersymbol interference in data transmission by automatic time-domain equalization
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1964
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A class of batch-iterative methods for the equalization of intersymbol interference channels
… of nonlinear receivers is proposed to equalize intersymbol interference (ISi) channels in a batch-iterative fashion. The iterated-decision or multipass equalizer uses symbol decisions made during the previous iteration to cancel out both precursor and postcursor ISi during the current iteration. …
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Low complexity turbo equalizations and lower bounds on information rate for intersymbol interference channels.
… equalization setting to remove the effect of intersymbol interference (ISI) at the receiver with new extrinsic information combining strategy that explores error correlation between the two sets of DFE outputs. When this method is combined with the proposed DFE extrinsic information …
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Efficient communication over additive white Gaussian noise and intersymbol interference channels using chaotic sequences
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Performance of Digital Communications Over Selective Fading Channels
… with primary emphasis on the effects of intersymbol interference produced by the frequency-selective character of WSSUS fading channels.
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Coding and Equalization for Radio Channels
… and linear, and such 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), …
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Turbo coding and equalization for wireless communication systems
… when Iterative decoding algorithms are used. Intersymbol interference (ISI) is a major problem in communication systems when information is transmitted through a wireless channel. Conventional approaches implement an equalizer to remove the ISI, but significant performance gain can be achieved …
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Communication-Inspired Design of on -Chip Buses
We mitigate the effects of intersymbol interference by employing a variable threshold inverter as an equalizer and operate the bus at rates beyond the rate governed by RC delay of the interconnect. We demonstrate even higher speeds by combining equalization with crosstalk avoidance coding. …
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On-Chip Voltage Controlled Oscillator for Clock Data Recovery Systems
… cross talk, and signal distortion resulting in intersymbol interference. Synchronous sampling is often employed to overcome these challenges. However, synchronous sampling makes use of a high purity oscillator to minimize the clock jitter. This thesis focuses on the design of a high purity, low …
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BER-optimal analog-to-digital converters for communication links
… that range from 2.5 dB for channels with low intersymbol interference (ISI) to more than 30 dB for channels with high ISI. Moreover, a 3 bit BER-optimal ADC achieves at least as low a BER as a 4 bit uniform ADC. For flash converters, this corresponds to a power reduction by 2x. Look-up table …
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Flaw-limited transport in germanium-on-silicon photodiodes
… photonic sampling system is analyzed and intersymbol interference, noise and linearity metrics are measured and discussed. In conclusion, a pathway for improved devices based upon improved fabrication techniques to reduce identified flaw densities combined with changes in device design is …
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Array Processing for Mobile Wireless Communication in the 60 GHz Band
… equalization in the presence of channel-induced intersymbol interference. The first contribution of this thesis is to establish the expected performance achieved by arrays in the outdoor environment. The second contribution is to analyze the performance of adaptive algorithms applied to array …
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Turbo equalization using message passing methods with higher order modulation signaling
… (ECC) to improve the system performance over intersymbol interference (ISI) channel. Since the discovery of turbo codes, iterative decoding has become a vital field of research in digital communications. The turbo equalization is a widely used iterative receiver technique which has high …
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