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 11 of 11 for “"multicarrier modulation"”.
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Design and performance of a flexible wavelet based multicarrier modulation for wireless communications
… the transition from single carrier to multicarrier has resulted in a significant improvement in performance. To this day, however, virtually no commercial application uses a multicarrier modulation based on anything else than Orthogonal Frequency Division Multiplex (OFDM). This thesis …
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Detection and Coding Techniques for Fourth Generation Air-Interfaces based on Multicarrier Modulation
… for the downlink of 4G wireless systems based on multicarrier modulation. Two joint Orthogonal Frequency Division Multiplexing (OFDM) and Code Division Multiple Access (CDMA) schemes have been characterised and compared in respect of their performance in different environments and configurations. …
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Capacity, coding and interference cancellation in multiuser multicarrier wireless communications systems
Multicarrier modulation and multiuser systems have generated a great deal of research during the last decade. Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier modulation generated with the inverse Discrete Fourier Transform, which has been adopted for standards in wireless and …
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Peak power reduction algorithms in ADSL modems
… ratio (PAR) reduction techniques for multicarrier modulation systems, such as discrete multitone (DMT) modems and orthogonal frequency-division multiplexed (OFDM) terrestrial broadcast transmitters. Through simulation and test implementation on a state-of-the-art programmable ADSL …
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Evaluation performance of OFDM system using the selected mapping technique for WIMAX technology
… systems these days. It is a form of multicarrier modulation technique with high spectral efficiency, robustness to channel fading, immunity to impulse interference, uniform average spectral density, capacity to handle very strong echoes and very less nonlinear distortion are the …
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Adaptive MMSE multiuser receivers in MIMO OFDM wireless communication systems
… has emerged as a very popular multi-carrier modulation technique, thus it is considered as a promising solution to enhance the data rate of future broadband wireless communication systems. The first contribution of this thesis is the development of a low complexity adaptive algorithm that is …
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Performance analysis of FBMC over OFDM in Cognitive Radio Network
… its enormous spectrum leakage. Filter Bank based Multicarrier (FBMC) has been proposed as a promising Multicarrier Modulation (MCM) candidate that has numerous advantages over OFDM. In this dissertation, a critical analysis of the performance of FBMC over OFDM was studied, and CR system was used …
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Design and Implementation of a Constant Envelope OFDM Waveform in a Software-Defined Radio Platform
… problem of OFDM and other spectrally-efficient multicarrier modulation schemes, specifically their stringent requirements for highly linear, power-inefficient amplification. The thesis then presents a most intriguing answer to the PAPR-problem in the form of a constant-envelope OFDM (CE-OFDM) …
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Energy-Efficient Multicarrier and Multicarrier-CDMA Systems
Design, analysis, and performance of Multicarrier (MC) and Multicarrier-Code Division Multiple Access (MC-CDMA) systems are considered. Specifically, Multicarrier Modulation (MCM) such as Orthogonal Frequency Division Multiplexing (OFDM) is used in these systems with emphasis on energy efficiency. …
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On the realisation of sequential fast fourier transform for orthogonal frequency division multiplexing based on field programmable gate array
… Evaluation (LTE), all rely heavily on using OFDM multicarrier modulation. OFDM is now favoured in many physical layers for mobile and wireless radio systems, given that it has good properties for mitigating multipath propagation and operating in fading channels. In the implementation of OFDM, FFTs …