ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605)
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Các bài báo tiêu biểu
Self-parametric chaotic oscillators for secure communication systems
- Trang 271-274
In this paper, we propose a new class of time-varying chaotic oscillators.
Driven by the internal parametric action that is a function of state variables,
such oscillators can generate more complex waveform depending upon the type and
parameters of this function. By introducing the appropriate ("reduced") time
scale we prove that time-varying state equation of self-parametric oscillator
can be red...
#Chaotic communication #Oscillators #Prototypes #State-space methods #Application software #Nonlinear equations #Time varying systems #Chaos #Computer simulation #Frequency synchronization
Smart low-power CMOS cameras for 3G mobile communicators
- Trang 216-225
The paper presents the concept of a smart multifunctional low-power camera for
3G mobile communicators and Personal Digital Assistants. The device is composed
of an ultra low-power image sensor featuring a large intra-scene dynamic range
and a high sensitivity, so as to ensure proper image acquisition under possibly
severe illumination conditions, as encountered in mobile. Further embedded
functio...
#Smart cameras #CMOS image sensors #Digital cameras #Personal digital assistants #Image sensors #Dynamic range #Lighting #Image coding #Authentication #Access control
Behavioural modelling of phase noise and jitter in voltage-controlled oscillators with VHDL-AMS
- Trang 370-373
In this paper, we investigate the phase noise and the jitter in
voltage-controlled oscillators. We have developed a VHDL-AMS model of a low
power, low noise, multivibrator oscillator. The model includes phase noise
effect. Simulation results verify the efficiency of our noise modelling
technique. The developed model is introduced in an RF model library to simulate
phase noise in frequency synthesi...
#Phase noise #Jitter #Voltage-controlled oscillators #Power system modeling #Low-frequency noise #Runtime #Frequency synthesizers #Fluctuations #Frequency domain analysis #White noise
Radio electronic devices control and monitoring via Internet
- Trang 246-249
Remote access to radio electronic devices and systems via telecommunication
channels enables one to control and monitor their characteristics in the cases
when a presence of an operator just near the appliances is impossible due to a
number of reasons. It makes possible to measure a wide set of electrical
characteristics of devices at a distance via the Internet. This technology might
be important...
#Radio control #Internet #Telecommunication control #Remote monitoring #Communication channels #Control systems #Home appliances #Electric variables measurement #Electric variables #Collaborative work
Implementation of DVB-RCS turbo decoder for satellite on-board processing
- Trang 142-145
The objective of the present paper is to provide a description of a turbo
decoding algorithm for turbo codes standardised for DVB-RCS. It also presents
the associated design architecture implemented in very high speed integrated
circuit hardware description language (VHDL), as well as synthesis on a specific
field programmable gate array (FPGA). The decoding structure was tested using a
rapid prot...
#Digital video broadcasting #Decoding #Satellites #Field programmable gate arrays #Turbo codes #Very high speed integrated circuits #Hardware design languages #Integrated circuit synthesis #Circuit testing #System testing
Cellular neural network in image filtration tasks
- Trang 267-270
The mathematical model of cellular neural network (CNN) working in discrete time
is considered. The possibility of such devices for computation of the
convolution of two-dimensional digital signal with a given kernel is shown. The
algorithm of construction of a difference equation with constant coefficient,
which has the solution of the demanded convolution is given. The hardware
implementation of...
#Cellular neural networks #Intelligent networks #Filtration #Image processing #Convolution #Difference equations #Smoothing methods #Telecommunication computing #Concurrent computing #Voltage
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605)
- 2002
Presents the front cover of the proceedings record.
Fundamental limitations in precision analog circuits
- Trang 16-19
The following principle of self compensation is formulated on the basis of an
analysis of a general structure. The main technological inaccuracy of active
elements' production influence the network characteristics. A sufficient
condition of self compensation was found for ARC networks and its uniqueness was
proved. In this case additional compensating circuit loops of feedback, put in
networks, do...
#Analog circuits #Transfer functions #Production #Dynamic range #Radio control #Control systems #Feedback circuits #Feedback loop #Sensor phenomena and characterization #Circuit synthesis
Fast SUBMAP decoders for duo-binary turbo-codes
- Trang 150-153
Since 1993, turbo-codes have been used in several communications systems because
of their high performance in error correction over noisy channels. In data frame
applications, the main decoding algorithm used in this technology is the
suboptimal maximum a posteriori algorithm (SUBMAP). In this paper, we describe
several implementations of a SUBMAP decoder for duo-binary codes, the final one
being ...
#Turbo codes #Convolutional codes #Convolution #Iterative decoding #Redundancy #Telecommunication standards #Digital video broadcasting #Lattices #Error correction #Very large scale integration
EHF power limiter intended for protection of the low noise amplifiers from the impact of video-pulses of nanosecond duration
- Trang 338-343
The EHF protective device with different polarity wiring scheme of limiting
p-i-n-diodes intended for protection of low noise amplifiers within the range of
frequencies 0.1...4.0 GHz from the impact of unit pulses of nanosecond duration
were developed. Frequency descriptions of the insertion loss and coefficient of
voltage standing wave at reception conditions of designed EHF power limiter were
in...
#Protection #Low-noise amplifiers #Pulse amplifiers #Wiring #Frequency #Nanoscale devices #Voltage #Insertion loss #Radiofrequency amplifiers #Receivers