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 35 for “"Outage Probability"”.
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Outage probability at finite SNR
… thesis, we present a technique to reduce the outage probability of a single user multiple input multiple output (MIMO) channel when a sub-optimal transceiver architecture is used. We show that in slow-fading scenarios, the outage probability can be improved by using unitary rotations combined …
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Towards unifying multi-resolution and multi-description : a distortion-diversity perspective
… between end-to-end distortion level and the outage probability as our performance metric, namely distortion-diversity tradeoff. In the high SNR regime, within the distortion-diversity tradeoff framework, we are able to differentiate two source-channel schemes, one based on multi-resolution …
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Relay Selection Strategies for Multi-hop Cooperative Networks
… of this method in terms of end-to-end outage probability, and we derive approximations for the ergodic capacity and the effective ergodic capacity of this strategy. Next we propose a novel hop-by-hop relay selection strategy where the relay in the decoding set with the largest number of …
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Performance Analysis of Decode-and-Forward Protocols in Unidirectional and Bidirectional Cooperative Diversity Networks
… (OSS). Specifically, we derive an exact outage probability in a one-integral form for the TDBC protocol, and exact closed-form outage probabilities for the PNC and OSS protocols. For the TDBC protocol, we also derive extremely tight upper and lower bounds on the outage probability in …
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Outage performance of cooperative cognitive relay networks
… their interference footprint and increases their probability of accessing licensed spectrum, improving throughput, and/or coverage. A cognitive relay network model has been analysed to derive the closed-form outage probability expressions for the repetition-based and selection-based protocols. …
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Outage prediction modelling of terrestrial free space optics for tropical region
… ratio (SNR) was used to study the outage performance of the FSO link under hazy weather conditions. The performance analysis was based on 2013, 2014 and 2015 collected visibility data from Malaysian Meteorological Department (MMD) for four stations located at KLIA Sepang, Bayan …
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Distributed belief propagation and its generalizations for location-aware networks
… a five times performance increase in terms of outage probability, when compared to conventional algorithms.
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Resource allocation for multi-cell OFDMA based cooperative relay network
… forward (AF) relaying protocols. The closed form outage probability is derived for the system under partial channel state information (PCSI) and considering the presence of inter-cell interference (ICI). The proposed resource allocation algorithms as well as the mathematical analysis were …
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Analytical Framework for the Performance Analysis of Multiple Antenna Systems
… in this study. First, we present theoretical outage probability of a system equipped with an array which suppresses a few dominant interering signals in TDMA cellular networks when the fading statistics of interfering signals are independent but non-identically distributed. Most of the related …
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Information theory of transmit diversity and space-time code design
… where we evaluate asymptotic expression for the outage probability and note its striking similarity with the error probability. After that, we consider a simple transmit diversity technique [7], and evaluate its achievable information rate. We note that in the case of a single receiver antenna …
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An Opportunistic Routing Protocol Design for Wireless Networks: A Physical Layer Perspective
… Performance metrics such as the end-to-end outage probability and the end-to-end average symbol error rate are studied in the analysis of these types of networks with the proposed network diversity schemes. Numerical results reveal that the proposed schemes can offer significant power …
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CAPACITY ENHANCEMENT OF CDMA SYSTEM USING ANTENNA ARRAY
… the base station (BS) [1 - 3]. An overall system outage probability is proposed as a capacity performance measure for multirate CDMA system with different service requirements among users. In this thesis, the performance analysis of a CDMA system with voice/data users is presented using two …
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Communication in a Poisson field of interferers
… two-dimensional plane. We characterize the error probability and capacity of the link, when subject to both network interference and thermal noise. We derive the power spectral density (PSD) of the cumulative interference at any location in the plane. We put forth the concept of spectral outage …
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Intelligent antenna sharing in cooperative diversity wireless networks
… destination. Information theoretic analysis of outage probability shows that our scheme achieves the same diversity-multiplexing gain tradeoff as achieved by more complex protocols, where coordination and distributed space-time coding for M relay nodes is required. Additionally, the proposed …
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Analysis of Advanced Diversity Receivers for Fading Channels
… receiver structures that provide good error probability performance with reduced power consumption and complexity particularly when the order of diversity is large. This thesis presents a unified analytical framework to perform a trade-off study for a class of hybrid generalized selection …
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Bit error rate simulation of a CDMA system for personal communications
… to a single correlation receiver. Results for outage probability are also presented.
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Generation system reliability with wind and solar power
… based on probabilistic method. A capacity outage probability table (COPT) for conventional generating units is introduced first in this thesis. The conventional generator is represented which based on the well-known recursive technique. Then, the sequential Monte Carlo Simulation method is …
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Performance analysis of cooperative relay networks in presence of interference
… performance metrics, such as symbol error probability, outage probability and random coding error exponent, in order to analytically estimate network capacity. A dual-hop network is introduced as the most basic type of relay network. Random coding error exponent results have been obtained …
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Statistical delay QoS driven resource allocation and performance analysis for wireless communication networks
… the maximum arrival rate with a guaranteed delay-outage probability constraint, is analyzed and investigated in terms of delayconstrained resource allocation and link-layer throughput analysis. Firstly, a joint optimization problem of link-layer energy efficiency (EE) and EC in a single-user …
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Coexistence of directional and non-directional technologies in 6G wireless dense networks
… an AP placement strategy that ties to the system outage probability. Thirdly, we use a geometric model for an indoor space and a reference optical channel model to formulate an optimization problem that proposes a dynamic field of view (FOV) receiver with a goal of optimizing receiver FOV for …
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