|
Guest Editor: Prof. Dr. Mohamed-Salim BOUHLEL
| @ARTICLE |
{P1180950101, |
| AUTHOR = |
{H. Bellahsene and M. Djeddi and J. M. Rouvaen and M. Djeddi}, |
| TITLE = |
{Maximum kurtosis estimation of the optimal filter and convergence step in
blind adaptive TEQ equalization for DMT}, |
| JOURNAL = |
{ICGST International
Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{1--8}, |
| ABSTRACT= |
{The effective channel shortening equalizers using
blind adaptive algorithms have run into great interest.
They are very important for orthogonal sub-carrier
maintained for multi-carrier modulation and reduce
consequently the complexity of multi-users detection
algorithms. We review in this paper the evolution
from classical equalization to the channel shortening
equalization. We apply the calculus of maximum
kurtosis for determining the optimal Time domain
EQualizer (TEQ) and synchronization delay for the
Maximum Shortening Signal to Noise Ratio
(MSSNR). We compare the optimal filters obtained
by other methods with the proposed method based on
maximum kurtosis}, |
| NOTE= |
{Blind Equalization, Multicarrier
Communication, DMT, HOS, kurtosis, TEQ}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950102, |
| AUTHOR = |
{Fouzi HARROU and Benamar BOUYEDDOU and Sidi Ahmed DJENNAS and Lotfi MERAD}, |
| TITLE = |
{Synthesis and Optimization of Linear Microstrip Antennas Array
using Minimax Method}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{9--18}, |
| ABSTRACT= |
{This paper presents a new approach for the
synthesis and optimization of linear and planar
microstrip antennas array. The proposed
approach is based on the Minimax method
which permits to determinate the optimal
combination between the amplitude and phase
feed law and spatial repartition of radiant
elements so that the synthesized diagram is
closed as possible as an optimal desired
diagram, defined by a function or a pattern
shape. Simulation results show a significant
reduction of side lobes level and the close-up
of the radiant diagram to the imposed
functions either the Gaussian or the pattern
shape}, |
| NOTE= |
{Microstrip antenna array, Minimax,
Synthesis, Optimization}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950103, |
| AUTHOR = |
{Fouzi HARROU and José. PICHERAL}, |
| TITLE = |
{Interpolation and High Resolution Methods for Non Uniform Linear
Antennas}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{19--23}, |
| ABSTRACT= |
{The problem of estimating the directions of
multiple sources using Nonuniform Linear
antenna Arrays (NLA) has attracted
considerable attention for both theoretical and
practical reasons. This paper is about the
adaptation and development of methods of
high resolution for Nonuniform Linear Array.
Except for spectral MUSIC, high resolution
methods cannot be directly applied on NLA
because they exploit the uniform geometry of
the array. Several approaches have been
proposed, among them spectral MUSIC,
methods based of Higher Order Moments
(HOM-ESPRIT). Another approach uses the
outputs of a virtual array, computed from the
real array using a linear interpolation
procedure over a given sector; therefore the
classic methods like Root-MUSIC and ESPRIT
can be applied. The practical interest of these
methods is twofold: first, the design of non
uniform antenna array with minimum
redundancy reduces the number of array
elements while maintaining equivalent
performance in terms of resolution and
secondly, the failure of some sensors may be
taken into account more satisfactorily than with
the usual methods (particularly in geophysics).
The goal of this paper is to compare the
performances of these various methods and to
evaluate their sensitivity to the choice of the
interpolator parameters}, |
| NOTE= |
{Interpolation technique, High
resolution DOA estimation, Array processing}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950104, |
| AUTHOR = |
{Alishir Moradi Kordalivand}, |
| TITLE = |
{Design of a Low-Noise Bandpass filter using Active Capacitance Circuit and Tunability with Neural Network}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{25--33}, |
| ABSTRACT= |
{In this paper, we especially analyze in detail the
active capacitance circuit and its Negative
resistance characteristic. We also present the
new type of active filters based on an active
capacitance circuit and tunability Negative
resistance with Neural Network. We used
ADS2008 and MATLAB2008A to perform
simulations. Through the simulated results, it is
shown that the proposed RF active filter can be
applicable to the narrow bandpass filter (BPF)
design, which also is stable and possesses Lownoise
characteristics. The frequency range in
which the circuit has negative resistance is 2-
7GHz. And center frequency is 5.5 GHz. In
frequency rang, negative resistance tunability
with Perceptrons Neural Network. We have
1dB gain at the center frequency and quality
factor (Q) is 26. The noise-figure of active filter
is 1.48dB at the center frequency. In general,
the K factor is larger than unity and the circuit
absolutely stable at the frequency range. The
result tunability with Neural Network had error
<1% in target}, |
| NOTE= |
{Active filter, bandpass filters (BPFs),
active capacitance circuit, negative resistance
and Neural Network.}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950105, |
| AUTHOR = |
{Alishir Moradi Kordalivand and Masoud Vafaei}, |
| TITLE = |
{An Active Recursive RF Filter Design in 0.35μm BiCMOS and
Tunability with Neural Network}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{35--39}, |
| ABSTRACT= |
{This paper is proposed an active recursive filter with BiCMOS technology. A test circuit was designed in a 0.35 μm SiGe BiCMOS technology with ADS2008 (Advanced design system). In simulations, the feasibility of this type of filter was demonstrated and reasonably good performance was obtained. Gain and Qvalue are tunable in a wide range. A center frequency is 2.5GHz which S21=14.227dB ,S12=-58.865. Simulations shows a center frequency tuning range from 1-4GHz.In this Design used two impedance matching , active and passive. Results show the
active impedance matching is better result. Finally tunability S parameters with Perceptions Neural Network for Circuit are shows. Error Neural Network regards result of ADS given less 0.1%}, |
| NOTE= |
{Active Recursive Filter, ADS, BiCMOS
and Neural Network}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950106, |
| AUTHOR = |
{Jasdeep Kaur Dhanoa and Nupur Prakash and S.S. Rajput}, |
| TITLE = |
{Self Cascode Current Mirrors for Low Voltage Analog Circuits}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{41--45}, |
| ABSTRACT= |
{A current mirror (CM) based on self cascode
arrangement, useful for low voltage analog and
mixed mode circuit is proposed. The CM uses 4
MOSFETs, has high input and output swing,
operating at ± 0.5 V supply. Pspice simulations
confirm the high performance of this CM having a
bandwidth of 2.1 GHz. Resistive and capacitive
compensations result in about threefold
bandwidth increase to 6.1 GHz}, |
| NOTE= |
{Current mirrors, regulated cascode, self
cascode structure, self cascode technique}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950107, |
| AUTHOR = |
{B. Boulerial and M.F. Belbachir}, |
| TITLE = |
{A Geometrical Approach for the Design of the Optimal FIR Filters
with Discrete Word-length Coefficients}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{47--54}, |
| ABSTRACT= |
{This paper is dedicated to the important
problem of digital FIR filters with linear phase
and discrete coefficients design. A new
optimization technique for the design of these
filters is given. The proposed algorithm
provides the optimal solution. In order to
reduce algorithm complexity, a sequential
localization of a reduced admissible research
space is conducted. The proposed algorithm
does not need the knowledge of the value of
the tolerance δ, like Locarbo, and then
explains the obtained drastic reduction of the
algorithm complexity.
The adopted approach is explained by using a
simple example. A comparative study with
examples taken from the literature illustrates
the efficiency of the proposed algorithm}, |
| NOTE= |
{Optimal FIR digital filters; Finite
wordlength coefficients; Discrete optimization;
Search space}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950108, |
| AUTHOR = |
{M. Fourati and L. Chaari and L. Kamoun}, |
| TITLE = |
{Voice quality analysis over channel coding of the GSM standard in
the Software Radio context}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{55--62}, |
| ABSTRACT= |
{These last years, the channel coding techniques used
for the numeric receiver quality of service
improvement, took a considerable evolution. They
constitute interesting alternative too complex optimal
solutions. The coding techniques used to protect the
message against the numerous channel imperfections
are not the same for the speech, or the numeric data.
In this paper, we studied the coding techniques of the
vocal messages used in the GSM standard and their
impacts on the voice quality of phone communication.
This analysis can be integrated in a more general
context that is the software radio. This future
technology will group several norms of radio mobile
networks. The GSM standard is a basis norm for the
software radio, due to this reason; we carry deep
interest to this norm}, |
| NOTE= |
{Software Radio, GSM standard, mobile
radio, canal, QoS, convolutional, Viterbi, CRC}
}
|
(Status: Accepted)
| @ARTICLE |
{P1180950109, |
| AUTHOR = |
{L.chaari and H. mliki and L.Kamoun}, |
| TITLE = |
{Performance Analysis of Backward Congestion Notification Schemes for
Datacenter Ethernet Networks}, |
| JOURNAL = |
{ICGST International Journal on Digital Signal Processing, DSP}, |
| YEAR = |
{2009}, |
| MONTH= |
{December}, |
| VOLUME = |
{09}, |
| ISSUE = |
{II}, |
| PAGES= |
{63--70}, |
| ABSTRACT= |
{Ethernet is replacing the traditional storage
networking technologies like Fiber Channel and
Infiniband in Datacenters, which provide lossfree
transmission. To make Ethernet suitable for
datacenter, it must deliver efficient throughput, low
latency, low delay variations and minimal frame
drops. Accordingly IEEE 802.Qau standards
committee is developing new specification for
congestion management for Ethernet in datacenter
networks. Backward Congestion Notification (BCN)
and Forward Explicit Congestion Notification (FECN)
are two proposals. These algorithms differ mainly by
the supplementary traffic to generate as well as the
time of reaction opposite the gradient of the traffic.
In this paper, we are interested especially in the
ECM techniques (Ethernet Congestion Manager) and
QCN (Quantification Congestion Notification). We
study the mechanism of each of these two protocols
and their algorithms as well as the main constraints
that guided their conception. We propose also a
performance analysis of those mechanisms}, |
| NOTE= |
{ECM, Métro-Ethernet, QCN, Congestion,
performance analysis, OMNeT++}
}
|
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