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.
Results
Showing 1 to 20 of 37 for “"equalisation"”.
-
Fast blind adaptive equalisation for multiuser CDMA systems
… a new robust and low-complexity blind multiuser equalisation over frequency selective channels. A robust pilot-assisted equalisation strategy is developed for the partially loaded time division duplex (TDD) component of the universal mobile telecommunications system (UMTS). In addition to …
-
Decision-feedback equalisation with fixed-lag smoothing in nonlinear channels.
… fixed-lag smoothing (FLS) to decision-feedback equalisation (DFE). The resultant algorithm was introduced in a recent paper and is termed herein the Fixed-Lag-Smoothing Decision-Feedback Equalisation (FLSDFE) algorithm. The motivation for studying the FLSDFE algorithm is that it may potentially …
-
High Speed Optical Links Using CAP Modulation and Novel Equalisation Techniques
… (ISI) due to their limited bandwidth. Equalisation is typically used to mitigate ISI and therefore improve the link capacity. This dissertation explores novel equalisation techniques for carrierless amplitude and phase (CAP) modulation based optical communication systems including OM4 …
-
An empirical examination of risk equalisation in a regulated community rated health insurance market
… of minimum benefits also exists, and two risk equalisation schemes have been put in place but neither was implemented. These schemes have proved highly controversial. To date, the debate has primarily consisted of qualitative arguments. This study adds a quantitative element by analysing a …
-
Effect of equalisation time and temperatures on microstructures of simulated directly and conventionally charged V - microalloyed steels
Two equalisation or reheating temperatures (1050°C and 1150°C) and three equalisation or reheating times (53 min, 318 min, and 1333 min) were applied to three V- and V-Ti- microalloyed steels, which contain a low carbon content (0.067 ~ 0.073 wt%) and high nitrogen content (0.017 ~ 0.021 wt%), by …
-
The application of neural networks to communication channel equalisation : a comparison between localised and non-localised basis functions
… networks is adaptive communication channel equalisation. This area of research has become prominent due to the reformulation of the equalisation problem as a classification problem. Viewing equalisation as a classification problem allows researchers to apply the knowledge gained from other …
-
SOA enhanced optical line terminal for future optical access network
… Amplifier (SOA)-based optical burst power equalisation as a promising approach to dynamic range management across both IM/DD and coherent PON architectures. By regulating optical gain before photodetection, SOA-based equalisation mitigates gain saturation effects, suppresses nonlinear …
-
An investigation of Turbo Codes over Mobile Wireless Channels
… of channels, a derivative of turbo codes, turbo equalisation is often used. To keep receiver delay to a minimum, decision feedback equalisation is used here. Results show that the combination can produce improvements in decoded results with increasing turbo iterations where ISI is low, but that …
-
Advanced digital predistortion of power amplifiers for mobile and wireless communications
… components iterative injection, baseband equalisation technique for minimising memory effects, Matlab-ADS co-simulation system and adaptation circuit with an offline training scheme. The thesis presents the following contributions of the research work. A generalized in-band distortion …
-
Improving particular components of the audio signal chain: optimising listening in the control room
… alignment of loudspeakers Research Area 3: Using equalisation for correcting and shaping a loudspeaker's frequency response These research areas relate to a consistent listening 'defect' that leads to a blurred and broader sound image. Measures to overcome these defects are presented and proven to …
-
Financial and fiscal facilitation of developmental local government in South Africa
… inhibit this, transfers that primarily focus on equalisation. If this restructuring does not occur, local government will not have the financial means to ensure that decentralisation implies the optimal mechanism for development - improved financial and fiscal facilitation of developmental local …
-
Digital power line communication on EHV power lines
… Particular emphasis is placed on the adaptive equalisation algorithm, that is selected in the modem design to combat distortions due to the imperfections of the modem and reflections on the power line. Most of the modem functions were implemented using DSP techniques.
-
Neutrino interaction cross-section ratios measured with the T2K near detector
… presented regarding the ND280 ECals. An energy-equalisation calibration is applied to bars in the ECals and found to considerably improve the consistency of the detector. In addition, the rate of degradation of the ECal scintillator bars was found to be well modelled by an exponential decay with …
-
Analysis and Optimisation of an Organic Optical Link
… in an optical link to provide a world-record equalisation-free OLED communications data rate of 130 Mbps.
-
Channel Estimation for OFDM Systems With Transmitter Diversity
… systems, mainly because of its inherent equalisation simplicity. Transmitter diversity can effectively combat multipath channel impairments due to the dispersive wireless channel that can cause deep fades in some subchannels. The combination of the two techniques, OFDM and transmitter …
-
The theory and practice of self-management in Algeria
… very far from the claimed objective of power equalisation. However, some successes in terms of educating a newly industrialised workforce and involving it in participatory procedures has been achieved. It is concluded that the major reason why attempts at democratising the decision making …
-
Investment Strategies under Uncertainty: Theory and evidence of preemption in case of geographical market entrance
… preemption point and as a consequence the rent equalisation between the firms does not occur. However, it is also shown that the critical level of asymmetry is mitigated or strengthened by common economic factors such as the host market profit volatility and the interest rate. Extending the …
-
The effect of leg lengthening surgery on muscle function : implications for rehabilitation
… This thesis is concerned with one method of limb equalisation, leg lengthening surgery. It investigates the effect of leg lengthening surgery on the muscle function and rehabilitation of patients. Qualitative research methodologies demonstrated that there is considerable uncertainty about the best …
-
Evaluation and modelling of perceived audio quality in popular music, towards intelligent music production
… to create mixes using gain, panning and equalisation. The data was analysed in a novel 'mix-space', 'panning-space' and 'tone-space' in order to determine if there is a consensus in how these tools are used. Methods were developed to create mixes by populating the mix-space according to …
-
Metric-based optimisation of acoustic lenses and waveguides
… Some of the limitations of the pathlength equalisation technique are then explored and discussed.
Page 1 of 2