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 10 of 10 for “"inter-carrier interference (ICI)"”.
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A comparison of timing methods in orthogonal frequency division multiplexing (OFDM) systems
… such as IEEE 802.16a. OFDM is a very efficient communications scheme for wireless ADHOC networks. However, the wireless environment causes inter-symbol interference (ISI) and inter-carrier interference (ICI). Estimating the starting point of an OFDM symbol must be handled efficiently and …
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Inter-carrier interference mitigation for underwater acoustic communications
… which has the potential to introduce significant inter-carrier interference (ICI). This thesis explores a number of means for mitigating ICI in such communication systems. One method that is explored is directly adapted linear turbo ICI cancellation. This scheme uses linear filters in an iterative …
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Quantitative Interference and Capacity Analysis of Broadband Multi-Hop Relaying Networks
… channels. It is shown that the resulting inter-carrier interference (ICI) due to the cumulative effects of the phase noise generated by these impairments per hop becomes very significant in a multi-hop relaying communication system, and severely degrades the BER performance of the system. …
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Analysis and mitigation of carrier frequency offset for uplink of OFDMA
… immunity to multipath fading, high spectral efficiency and simple implementation, making it suitable for high data rate multimedia wireless applications. One of the significant drawbacks of the OFDM is its sensitivity to Carrier Frequency Offset (CFO). CFO causes Inter Carrier Interference (ICI) …
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Advanced signal processing solutions for ATR and spectrum sharing in distributed radar systems
… is composed by quasi-orthogonal chirpsub-carriers generated through the Fractional Fourier Transform (FrFT),with the aim of preserving the radar performance of a typical Linear Frequency Modulated (LFM) pulse while embedding data to be sent to acooperative system. Techniques aimed at …
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Compensation of nonlinear distortion and frequency offset in OFDM systems
… previous learning architecture didn’t make an efficient training for the predistorter because the learning algorithm utilized only indirect structure. For more efficient training, we propose a new learning algorithm which utilize direct as well as indirect structures in this dissertation. Our …
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Spectrally Modulated Spectrally Encoded Framework Based Cognitive Radio in Mobile Environment
… have been considered promising to enhance the efficiency and utilization of the spectrum. Since some of the spectrum bands are occupied by primary users (PUs), the available spectrum for secondary users (SUs) are non-contiguous, and multi-carrier transmission technologies become the natural …
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Orthogonal Frequency Division Multiplexing Modelling
… Division Multiplexing (OFDM) and Filterbank Multicarrier (FBMC). Multicarrier techniques are widely being considered for the development of the telecommunication systems such as the Long Term Evolution (LTE) networks, 5th Generation (5G) and beyond. One of the modulation strategies for upcoming 5G …
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Modeling and Analysis of Synchronization Schemes for the TDMA Based Satellite Communication System
… in satellite communications. Although single-carrier (SC) modulation techniques has been mostly employed in the TDMA satellite communication system, multi-carrier modulation techniques, like orthogonal frequency division multiplexing (OFDM), are also promising candidates for the future high …
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Efficient tranceiver [sic] techniques for interference and fading mitigation in wireless communication systems
… During the transmission, the phenomenon of inter-symbol interference (ISI) occurs at the receiver due to the time dispersion of the involved channels. Hence, several delayed replicas of previous symbols interfere with the current symbol. Equalization is usually employed in order to combat …