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 14 of 14 for “"successive interference cancellation (SIC)"”.
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Analyzing performance of SIC with multiple power multichannel Aloha
This thesis analyzes the performance of successive interference cancellation (SIC) when used with multiple power, multichannel Aloha. We use the fluid model to analyze the performance of the system under various circumstances. We also simulate the performance of a SIC system over a single channel. …
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Capactiy of single-hop communication links in wireless ad hoc networks
… components are implemented. These include successive interference cancellation (SIC), and multiple antenna arrays at the transmitting and the receiving end of the link. These strategies are then compared in terms of the dB improvement of capacity that they provide. Network parameter NP is …
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Communication strategies for the MIMO interference channel
Managing interference for wireless networks is crucial for meeting future demand for higher mobile data rates. Interference can be viewed through the interference channel (IC) in which pairs of transmitters and receivers interfere with each other, so an interesting way to manage interference is to …
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Polarization Reconfigurable Non-Orthogonal Multiple Access (PR-NOMA) for Next Generation Communication Systems
… The concepts of power allocation together with successive interference cancellation (SIC) and the polarization are proven to be a promising mechanism for improving data stream by way of antenna polarization adjustments. In this thesis, a detailed mathematical derivation and comprehensive …
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Joint relay beamforming and transceiver processing in multiuser relay network
… processing to maximize the minimum signal-to-interference-and-noise ratio (SINR) under a relay power budget. The joint optimization problem is iteratively solved by designing relay beam matrix and receiver processing matrix. For the latter, both maximum-ratio-combining (MRC) receiver and …
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Novel Approaches to Overloaded Array Processing
… overloaded environment through the use of MMSE interference rejection filtering embedded in a successive interference cancellation (SIC) architecture. The second receiver architecture enhances signal extraction performance by embedding a stronger interference rejection receiver, the …
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Multiuser Detection for Pulse Amplitude Modulated Signals
… overlapping transmissions to reduce inter-user interference and improve system performance. One main application for MUD research has been reducing inter-user interference in Code-Division Multiple Access (CDMA) channels with performance degradation caused by the near-far effect. In this thesis, …
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Cross-Layer Optimization: System Design and Simulation Methodologies
… methodologies independently model the physical and higher layers. When multiple layer simulations are required, an abstraction of one layer is inserted into the other to provide the multiple layer simulation. However, recent advances in wireless communication technologies, such as adaptive …
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Application of integer quadratic programming in detection of high-dimensional wireless systems
… widely used detection schemes for MIMO OFDM: (1) Successive Interference Cancellation (SIC) and (2) Iterative Detecting and Decoding (IDD). First, SIC-based algorithms are derived via a QP formulation in contrast to using a linear MMSE detector at each stage. The resulting QP-SIC algorithms offer …
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Adaptive DS-CDMA multiuser detection for time variant frequency selective Rayleigh fading channel
… capacity is also limited by multiple accessed interference (MAI) signals. This work focuses on the development of adaptive algorithms for multiuser detection (MUD) and interference suppression for wideband direct sequence code division multiple access (DS-CDMA) systems over time-variant …
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Self-concatenated coding for wireless communication systems
… codes was carried out with the aid of Extrinsic Information Transfer (EXIT) charts. The EXIT chart based design has been found an efficient tool in finding the decoding convergence threshold of the constituent codes. Additionally, in order to recover the information loss imposed by employing …
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On Programmable Control and Optimization for Multi-Hop Wireless Networks
… could be justified at the time when the basic technical building blocks (e.g., node computational power, communication technology, positioning technology) were the bottlenecks. Recent advances and breakthroughs in these technical areas along with the emergence of programmable networks with …
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Near-capacity co-located and distributed MIMO systems
… both multiplexing and diversity gains. The basic decoding procedure conceived for our GMLST arrangement is a certain ordered successive decoding scheme, which combines group interference nulling and interference cancellation. We apply a specifically designed power allocation scheme, in order …
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Some Optimization Problems in Wireless Networks
… results under both the protocol model and the physical model. Further, we show that the seminal results developed by Gupta and Kumar for the simple single-channel single-radio (SC-SR) networks are special cases under the results for CRNs. <b>2. Asymptotic Capacity of Multi-hop MIMO Ad Hoc …