ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605)

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Sensitivity properties of all-pole canonical low-pass G/sub m/-C filters
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 54-57
S. Koziel, S. Szczepanski
In the paper, sensitivity properties of all-pole canonical low-pass G/sub m/-C filters are investigated. We present a general structure of all-pole canonical low-pass filter of arbitrary order as well as its matrix description. The formulas for sensitivity functions are also given. The comparison of sensitivity properties for canonical structures up to 10-th order ones is performed for Butterworth... hiện toàn bộ
#Low pass filters #Capacitors #Transfer functions #Ground penetrating radar #Geophysical measurement techniques #Transconductance #Capacitance measurement #Frequency measurement #Differential equations
Analysis of reconfigurable and heterogeneous architectures in the communication domain
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 190-193
H.T. Feldkamper, T. Gemmeke, H. Blume, T.G. Noll
One of the most challenging design issues for next generations of (mobile) communication systems is fulfilling the computational demands while finding an optimum trade-off between flexibility and implementation aspects, especially power consumption. Flexibility of modern architectures is desirable, e.g. concerning adaptation to new standards and reduction of time-to-market of a new product. Typica... hiện toàn bộ
#Computer architecture #Costs #Mobile communication #Mobile computing #Energy consumption #Time to market #System-on-a-chip #Field programmable gate arrays #Signal processing #Digital control
EHF power limiter intended for protection of the low noise amplifiers from the impact of video-pulses of nanosecond duration
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 338-343
A.V. Kirillov, L.N. Sorokin, V.G. Usychenko, S.I. Lenchuk
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... hiện toàn bộ
#Protection #Low-noise amplifiers #Pulse amplifiers #Wiring #Frequency #Nanoscale devices #Voltage #Insertion loss #Radiofrequency amplifiers #Receivers
Fast SUBMAP decoders for duo-binary turbo-codes
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 150-153
Y. Saouter, C. Berrou
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 ... hiện toàn bộ
#Turbo codes #Convolutional codes #Convolution #Iterative decoding #Redundancy #Telecommunication standards #Digital video broadcasting #Lattices #Error correction #Very large scale integration
Design the prototype of the Spartan II FPGA slice with the current-mode gates
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 182-185
O. Maslennikow, R. Berezowski, P. Soltan, M. Rajewska
The paper deals with the problem of the design of the main FPGA-cell blocks with current-mode gates - novel digital gates operating with constant, continuous power supply current. Using proposed approaches to design digital current-mode circuits, current-mode prototypes of several digital circuits and the Spartan II slice are elaborated. The obtained circuits are characterized by smaller hardware ... hiện toàn bộ
#Prototypes #Field programmable gate arrays #Current supplies #Power supplies #Current mode circuits #Digital circuits #Hardware #Switching circuits #Noise level #Voltage
Optimization of the spherically stratified microwave lens antenna
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 350-353
D.V. Shannikov, S.V. Kuzmin
Mathematical model of the spherically stratified microwave lens antenna with layers of homogeneous dielectrics is investigated. This antenna has central symmetry. It allows one to use a set of sources at once and to form several independent radiation patterns, respectively. It is also used as mechanically scanned antenna. The antenna can be used in systems of satellite communication and mobile-com... hiện toàn bộ
#Lenses #Microwave antennas #Dielectric losses #Feeds #Satellite antennas #Earth #Switches #Electronic mail #Mathematical model #Geometrical optics
A non-quasi-static small-signal model of the four-terminal MOSFET for radio and microwave frequencies
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 316-319
W.J. Kordalski, T. Stefanski
An original, fully analytical non-quasi-static (NQS) small-signal model of the MOS transistor is proposed for analysis and simulation of radio and microwave frequency circuits. We report results of frequency-domain analysis, the main features and experimental verification of the novel NQS four-terminal model derived in the time-domain (Kordalski, Int. Conf. on Signals and Electron. Sys., 2000). Th... hiện toàn bộ
#MOSFET circuits #Microwave frequencies #Analytical models #Circuit simulation #Microwave circuits #Frequency domain analysis #Time domain analysis #Electrons #Computational modeling #Physics computing
New structures of precision sensors of resistive type
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 28-31
I.P. Scherbinin
In this article a new method of synthesis of resistive precision sensor structure is shown. There are theoretical theses that give a chance to create precision device networks using the elements that do not have high quality characteristics. These theses are proved in this work. There is an example of resistive sensor structure synthesis and results of its design. The structure is characterized by... hiện toàn bộ
#Network synthesis #Signal synthesis #Noise level #Transfer functions #Control systems #Control system synthesis #Sensor phenomena and characterization #Radio control #Frequency #Modems
An approach to the design of ELIN (externally linear internally nonlinear) signal processors
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 464-470
R.J.P. de Figueiredo, J. Yao
In VLSI circuits used in wireless and other types of electronic communications, nonlinear signal distortion arises from the nonlinear characteristics of the active devices in the circuit such as bipolar transistors, MOSFETs, and JFETs. We present a nonintrusive method for cancellation of such distortions. Specifically, let the VLSI circuit be denoted by /spl psi/ and assume that its output consist... hiện toàn bộ
#Signal design #Signal processing #Nonlinear distortion #Very large scale integration #Voltage #Nonlinear circuits #Bipolar transistors #MOSFETs #JFETs #Signal generators
A reconfigurable data-flow architecture for a class of image processing applications
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - - Trang 460-463
A. Sinha, S. Neogi, K. Maiti
This paper aims to device an architecture which uses the capability of asynchronous concurrency of the data flow architecture as well as spatial parallelism of SIMD machines for a class of image processing applications using reconfigurable processing elements (RPE). Overall processing speed is enhanced by: (a) concurrent functioning of the RPE; and (b) replacing software execution of signal proces... hiện toàn bộ
#Image processing #Signal processing algorithms #Concurrent computing #Parallel processing #Computer architecture #Signal processing #Hardware #Data flow computing #Application software #Field programmable gate arrays
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