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 97 for “"Interference Cancellation"”.
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Analogue self-interference cancellation in full-duplex radios
Active analogue self-interference cancellation (AASIC) techniques are used to prevent the saturation of the receiver chain in full-duplex (FD) radios. This is done by cancelling the self-interference (SI) signal before it enters the receiver chain. AASIC techniques are usually implemented together …
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Analogue self-interference cancellation in full-duplex radios
Active analogue self-interference cancellation (AASIC) techniques are used to prevent the saturation of the receiver chain in full-duplex (FD) radios. This is done by cancelling the self-interference (SI) signal before it enters the receiver chain. AASIC techniques are usually implemented together …
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An adaptive multistage interference cancellation receiver for CDMA
Most of the previous research on multistage interference cancellation receivers for Code Division Multiple Access (CDMA) systems has relied on the use of simulation techniques for performance evaluation. This thesis formulates a model for an adaptive multistage interference cancellation receiver …
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Co-channel interference cancellation in mobile cellular communication systems
… systems is mainly limited by co-channel interference caused by frequency reuse. The acceptable co-channel interference at the receiver determines the minimum allowable distance between adjacent co-channel users and hence the system capacity. One approach to increase the capacity is to …
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Optimization of Soft Interference Cancellation in DS-CDMA Receivers
Parallel interference cancellation for DS-CDMA has been shown to suffer from biased amplitude estimates if a matched-filter estimator is used. The bias magnitude is proportional to the number of interfering users. For heavy system loads, the bias has been shown to adversely effect the accuracy of …
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Single antenna interference cancellation in asynchronous GSM/GPRS networks
… proposed a decorrelator-based single antenna interference cancellation algorithm for the asynchronous GSM/GPRS network. The algorithm is tested according to the current SAIC/DARP performance requirement in the computer simulation, and is shown to give various gains in different test scenarios.
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An FPGA-Based Multiuser Receiver Employing Parallel Interference Cancellation
… that exploit the nature of the multiple access interference (MAI). By jointly demodulating the users in the system, this interference can be characterized and reduced thus decreasing the overall probability of error in the system. Numerous multiuser structures exist, each with varying degrees of …
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Efficient Interference Cancellation Techniques for Advanced DS-CDMA Receivers
… of advanced processing techniques for multiuser interference cancellation in direct sequence code division multiple access communications. Emphasis is placed on the development of efficient techniques that are practical to implement. The work begins with a study of several sub-optimal multiuser …
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Selective Interference Cancellation and Frame Synchronization for Packet Radio
… investigates the application of multiuser interference suppression to direct-sequence code-division multiple-access (DS-CDMA) for peer-to-peer packet radio networks. The emphasis of this work is to develop and validate efficient interference suppression techniques through selective …
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Self-Interference Cancellation for Simultaneous Transmit and Receive (STAR) Applications
Co-channel interference between transmit and receive antennas means that simultaneous transmission and reception (STAR) of signals on the same frequency is an engineering challenge when co-locating the transmit and receive channels. Due to advancements in Radio Frequency (RF) receiver and antenna …
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Application of particle swarm optimization in adaptive self-interference cancellation
… of particle swarm optimization in self-interference cancellation. To achieve cancellation, the receiver has to differentiate between the transmit and receive signal. The transmit signal is already known at the transmitting side but it undergoes some distortion before it reaches the …
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Ultra-wideband Narrowband Interference Cancellation and Channel Modeling for Communications
… The thesis also investigates narrowband interference cancellation. To protect legacy narrowband systems the FCC requires any UWB transmission to maintain a very low power spectral density. However, a UWB system may therefore be hampered by the presence of a higher power narrowband signal. …
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Time dependent adaptive filters for interference cancellation in CDMA systems
Interference is a major problem in modern wireless communications systems. No longer are background noise and average power loss the limiting factors in system capacity corruption of the available spectrum by multiple access and nearby interference provides the upper limit to system capacity. If …
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Capacity, coding and interference cancellation in multiuser multicarrier wireless communications systems
… multi-access, inter-symbol, and inter-carrier interference (MAI, ISI, ICI). Nevertheless, channel dispersion also provides diversity, which can be exploited and has the potential to increase robustness against fading. Multiuser multi-carrier systems can be implemented using Orthogonal Frequency …
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A framework for low-complexity iterative interference cancellation in communication systems
Communication over interference channels poses challenges not present for the more traditional additive white Gaussian noise (AWGN) channels. In order to approach the information limits of an interference channel, interference mitigation techniques need to be integrated with channel coding and …
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Combined Space-Time Diversity and Interference Cancellation for MIMO Wireless Systems
… also evaluate the system performance of various interference cancellation techniques when employing multiple-receive antenna in interference-limited systems. The first part of this dissertation presents two major contributions to MIMO systems. The analytical expression for space-time MIMO channel …
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Highly Tunable Integrated Self-Interference Cancellation Techniques for Intelligent Full-duplex Radios
… bandwidth and data rates has posed significant interference challenges among transceivers. In-band Full-duplex (FD) communication offers a solution by increasing spectral efficiency by enabling a radio's transmitter and receiver to operate simultaneously on the same channel frequency. This …
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