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Skip to Search Results- 13Jiang, Hai (Electrical and Computer Engineering)
- 2Ardakani, Masoud (Electrical and Computer Engineering)
- 2Tellambura, Chintha (Electrical and Computer Engineering)
- 2Vorobyov, Sergiy A (Electrical and Computer Engineering)
- 2Vorobyov, Sergiy A. (Electrical and Computer Engineering)
- 1Niu, Di (Electrical and Computer Engineering)
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Fall 2013
Cognitive radio is one of the most promising technologies to address the spectrum scarcity problem. Cognitive radio requires spectrum sensing, which is used by unlicensed users to opportunistically access the licensed spectrum. Spectrum sensing using energy detection offers low-cost and...
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Analysis of Non-Coherent Detectors for Opportunistic Spectrum Access in Broadband Wireless Networks
DownloadSpring 2016
The exponential growth in the number of wireless broadband service users demands an enormous increase in the available communication bandwidth, which inherently translates into an increased demand for the radio frequency spectrum. Opportunistically accessing the unused portions of the spectrum...
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Applications of Power-Domain Non-Orthogonal Multiple Access in Wireless Communication Networks
DownloadSpring 2020
The expected explosive data traffic and scarcity of available spectrum in wireless networks place higher demands on spectrum utilization. As one of the advanced techniques for improving spectral efficiency, non-orthogonal multiple access (NOMA) has raised considerable attention recently. Although...
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Spring 2018
Energy harvesting techniques, which exploit ambient energy to power communications devices, have gained increased attention in recent years. Such techniques have emerged as a promising solution for energy-constrained wireless networks, with possible applications in the future Internet of things....
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Cooperative linear precoding for spectrum sharing in multi-user wireless systems: game theoretic approach
DownloadFall 2009
Future wireless communications expect to experience a spectrum shortage problem. One practical solution is spectrum sharing. This thesis studies precoding strategies to allocate communication resources for spectrum sharing in multi-user wireless systems from a game-theoretic perspective. The...
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Efficiency and Security Analysis in Multi-User Wireless Communication Systems: Cooperation, Competition and Malicious Behavior
DownloadSpring 2014
Efficiency and security are major concerns with increasingly higher importance in modern wireless communications. These two concerns are especially significant for multi-user wireless communications where different users share or compete for resources. Among different users, there are...
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Fall 2017
With the proliferation of e-commerce business, the study of online user purchasing behavior plays an important role in improving purchasing experiences of users as well as providing valuable intelligence to sellers. While most previous research efforts focused on explicit user behavior modeling,...
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Fall 2013
High transmission rates will be demanded in future wireless communication networks. However, we will soon experience a spectrum scarcity problem since almost all available spectrum has been allocated to various wireless applications. A promising solution to this problem is to significantly...
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Parallel Sampling and Reconstruction with Permutation in Multidimensional Compressed Sensing
DownloadFall 2013
The advent of compressed sensing provides a new way to sample and compress signals. In this thesis, a parallel compressed sensing architecture is proposed, which samples a two-dimensional reshaped multidimensional signal column by column using the same sensing matrix. Compared to architectures...
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Parameter Estimation in Low-Rank Models from Small Sample Size and Undersampled Data: DOA and Spectrum Estimation
DownloadSpring 2015
In estimation theory, a set of parameters are estimated from a finite number of measurements (samples). In general, the quality of estimation degrades as the number of samples is reduced. In this thesis, the problem of parameter estimation in low-rank models from a small number of samples is...