Search for dissertations about: "I Q imbalance"
Showing result 1 - 5 of 9 swedish dissertations containing the words I Q imbalance.
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1. Characterization and Compensation of Hardware Impairments in Transmitters for Wireless Communications
Abstract : Increasing demands for data rate, energy efficiency and reliability in wireless communications have resulted in the introduction of radio frequency (RF) multiple input multiple output (MIMO) transmitters. However, MIMO transmitters suffer from additional crosstalk impairments along with the power amplifier (PA) and I/Q imbalance distortions observed in single input single output (SISO) transmitters. READ MORE
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2. Behavioral modeling of wireless transmitters for distortion mitigation
Abstract : As the demand for high speed and reliable wireless communication increases, theimportance of having a linear transmitter has enhanced. Distortions created by thetransmitter, such as power amplifier nonlinearity and I/Q imbalance, diminish thefidelity and limit the performance of wireless systems, if left undealt with. READ MORE
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3. Linearization of High Efficiency Transmitters for Wireless Communications
Abstract : In recent years, reducing energy consumption in wirelesscommunication systems has gained prominence. In order to achieve this energy saving, high power efficiency is necessary for the wireless transmitters used. READ MORE
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4. Behavioral Modeling of Radio Frequency Transmitters
Abstract : The dependence of modern wireless communication systems on the fidelity ofthe transmitter has increased the importance of modeling these components.Behavioral modeling is a commonly used technique to find the input-outputrelationship of a system, without the need for the knowledge of the specificcomponents. READ MORE
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5. Downlink Resource Allocation in Cooperative Wireless Networks
Abstract : Wireless cooperative networks, which is based on exploiting coordination among multiple access nodes, has been considered as a promising approach to improve the spectral efficiency, reduce the energy consumption, and extend the network coverage of future wireless communication systems. In practice, the actual benefit of multi-node cooperation is affected by a variety of factors, including the quality of channel state information (CSI), the constraints on the feedback and backhaul links, hardware impairments, resource allocation and data processing schemes. READ MORE