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This paper presents a versatile implementation of a reconfigurable module for acquisition and synthesis of modulated signals that are specific to the modern communication equipments. The hardware structure of the system is elaborated mainly around the TDA 8702 high speed video digital-to-analog converter and ADC 0820 analog-to-digital converter, both connected in a configuration that is controlled...
The multimodal biometric systems optimization is approached with a biometric data fusion model that is based on an intra-modal and inter-modal feature combination. The intra-modal feature fusion is applied for the same biometric trait and it is suitable also for a system with a single biometric (unimodal). The inter-modal feature fusion is applied for multi-biometric systems (multimodal). The proposed...
In this paper are presented the results regarding the design and the implementation of a efficient delta encoder that is intended to be used for conditioning of signals from analogue sensors. In addition is proposed a dedicate circuit architecture for transmission of digitally encoded signals from sensors to remote measurement systems using a very reliable communication media that is represented by...
This Wireless communication capabilities enable location-based applications such as management telecommunication work teams and other professional groups in field. The accuracy and reliability localization may be degraded by noise. In order to improve the localization precision is proposed a filtering algorithm that is characterized throw robustness and simplicity for estimation application. The particle...
The paper presents an innovative hierarchical classification model which should be applied for large-scale biometric identification systems, in order to improve their performance. The model is relying on a multi-level fusion approach, but completed with a feature-selection strategy. The practical application of the proposed model concerns networks security issues, especially for databases remote access,...
Adaptive algorithms used in smart antenna systems have been thoroughly studied along the years. Well known algorithms like the LMS (Least Mean Squares) were improved and other more performant algorithms were created. An example is the VSSLMS (Variable Step Size LMS) algorithm, with Kwong and Aboulnasr variants. The LMS class of algorithms uses a reference signal in order to reach convergence. Other...
The paper presents a novel approach to provide a more secured remote access to informatic systems; this approach is based on biometric identification multimodal methods with more levels of biometric fusion. The multi-level fusion is the novelty of this solution, as the actual approaches in multimodal biometric as relying on single-level fusion schemes. The integration of more fusion schemes within...
In this paper is presented a microcontroller based system that is capable to remotely control the information presented on an LCD having relatively small dimensions. The application for this system is in the field of electronic labeling of the products. The system is composed by two electronic modules, a receiver that contain the alphanumeric LCD unit, and a transmitter connected to a computer through...
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