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 12 of 12 for “"Information rates"”.
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Geometrical Representation, Processing, and Coding of Visual Information
… case, we use a simple model to show that the information rates of the POF are equivalent to the information rates of the scene around it.
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Transmission of Information in Control Systems
… structures, we introduce lower bounds on information rates leading to the existence of controllers and coders leading to stability. We further obtain stabilizing decentralized coder and controllers exploiting the correlation in the observations in the case where a centralized decoder is …
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Transceiver design and system optimization for ultra-wideband communications
… ultra-wide bandwidth of the signal. Achievable information rates are quantified as a function of transmission distance over additive white Gaussian noise and multipath channels under specific UWB constraints: limited power spectral density, specific modulation formats, and a highly dispersive …
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Information theory of transmit diversity and space-time code design
We restate the achievable information rates for multiple transmit multiple receive antenna systems in fast fading channels. Then we consider non-ergodic channel, where we evaluate asymptotic expression for the outage probability and note its striking similarity with the error probability. After …
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On the Optimality of the Lexicon
… to shorten utterances, or a pressure to keep information rates as close as possible to an unknown communication channel capacity. Finally, we study the impact of this pressure on cross-linguistic differences in word lengths and on the ratio of homophones in natural languages. Overall, our …
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Network level performance of differentiated services (diffserv) networks
… among AF aggregates based on their Committed Information Rates (CIRs) in both single and multiple bottleneck link networks.
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Communications over fading channels with partial channel information : performance and design criteria
… under the assumption that some statistical information of the wireless fading channels is available. These results are useful in determining the optimal design of system parameters. Suboptimal receivers are designed for systems that are constrained in terms of implementation complexity. The …
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Implications of Fiber Nonlinearities on Coherent Optical Fiber Communications
… demonstrate improvements of 5.3% and 8.2% in the information rates for the 256 Gb/s SP 128-QAM compared to the DP 16-QAM at the same bit rate and for transmission over 2100 km and 2700 km, respectively. The thesis studies the estimation of the nonlinear signal-to-noise ratio (SNRnl) using …
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System design and performance analysis of asymmetrically and symmetrically clipped optical (ASCO)-OFDM for IM/DD optical wireless communications
… wireless signals in an indoor environment. Information data streams are modulated into the intensity of optical carriers and transmitted by light emitting diodes (LEDs). At the receiver, the instantaneous power of optical signals can be directly detected by photodiodes. Multipath distortion, …
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Reduced Receivers for Faster-than-Nyquist Signaling and General Linear Channels
… power spectral density (PSD). In FTN consecutive information carrying symbols can overlap in time and in that way introduce a controlled amount of intentional intersymbol interference (ISI). This technique was introduced already in 1975 by Mazo and has since then been extended in many directions. …
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High dimensional information processing
… and motor areas, the estimation of firing rates following spike-triggered covariance analyses, etc. Here we introduce methods based on Gaussian process nonparametric Bayesian techniques for estimating these two-dimensional rate maps. These techniques offer a number of advantages: the …
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MSE-based Linear Transceiver Designs for Multiuser MIMO Wireless Communications
… design of transceivers assuming channel state information (CSI) at the transmitter. We consider minimization of the sum-MSE over all users subject to a sum power constraint on each transmission. Using MSE duality, we solve a computationally simpler convex problem in a virtual uplink. The …