state space representation of mimo systems
Báo cáo khoa học: "REPRESENTATION OF FEATURE SYSTEMS IN A NON-CONNECTIONIST MOLECULAR MACHINE" pptx
Ngày tải lên :
18/03/2014, 02:20
... any of the addressees
because of the missing step it contains.
The unification and control functions
of the molecular machine together define
a particular conception of phonological
rule systems, ...
CONNECTIONIST MODEL OF FEATURE
SYSTEMS
Obviously, the presence of a feature
in a segment corresponds to a relatively
high activation level of a node or a
coalition of nodes in a connectionist ... activate a
set of output molecules in a well-defined
order° Modifications correspond to the
effects of the rules stored in the
molecules on the path of the message.
One of the most important...
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Báo cáo hóa học: " Research Article A Variational Approach to the Modeling of MIMO Systems" docx
Ngày tải lên :
22/06/2014, 19:20
... is a factor which limits the
radio capacity of the system.
3. PERFORMANCE OF MIMO
One of the basic tasks in dealing with MIMO systems is the
modeling of the channel generally represented by the ... overview
on the third generation (3G) of telecommunications. In
Section 3, we study the performances of MIMO systems deal-
ing with 3G. We first develop the modeling of MIMO channel
by using the random ... mobile systems that support
circuit and packet oriented.
2.1. Principle of MIMO
From a diagram of a MIMO wireless t ransmission system
(see Figure 1), a compressed digital source in the form of a
binary...
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Báo cáo hóa học: " BER analysis of TDD downlink multiuser MIMO systems with imperfect channel state information" pot
Ngày tải lên :
20/06/2014, 22:20
... noise ratio (SINR) of each data
stream of TDD downlink MU -MIMO systems. Based
on the post-processing SINR, we then obtain the
expression for average BER of uncoded TDD MU-
MIMO ZF systems with M-quadrature ... for different downlink data symbol
n
k
2 Number of antennas of each user
M 8 Number of antennas of BS
K 2 Number of user
N 4 Number of antennas of all users
g
s
(dB) 0-30 Pre-processing data SNR
g
p
(dB) ... wireless
communication systems such as long-term evolution
(LTE), LTE-advanced (LTE-A), WiMax, etc. Multiuser
MIMO (MU -MIMO) has become one of the main fea-
tures in LTE-A systems because of s everal key...
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Tài liệu Báo cáo khoa học: "The Utility of a Graphical Representation of Discourse Structure in Spoken Dialogue Systems" ppt
Ngày tải lên :
20/02/2014, 12:20
... paper we explore the utility of the Naviga-
tion Map, a graphical representation of the dis-
course structure. As our first step towards under-
standing the benefits of the NM, we ran a user
study ... Aspects of Coherence in Student
Essays. In Proc. of HLT-NAACL.
J. Hirschberg and C. Nakatani. 1996. A prosodic analy-
sis of discourse segments in direction-giving mono-
logues. In Proc. of ACL. ...
perception of the system. We find that the NM
presence significantly improves user’s perception
of the system in terms of their ability to concen-
trate on the instruction (Q3), in terms of their...
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Báo cáo khoa học: "THE REPRESENTATION OF CONSTITUENT STRUCTURES FOR FINITE-STATE PARSING" pdf
Ngày tải lên :
08/03/2014, 18:20
...
The derivation of E2* manifests first-degree
center embedding of the category S*, as a result
of the treatment of S as both a prefix and a suf-
fix in G2*. However, no derivation of an affixed ...
pretation of the expression as a whole.
This completes our demonstration of the abil-
ity of affixed strings to represent the structural
descriptions of the acceptable sentences of a na-
tural ... evidence for the
identification of that constituent; e.g., if the
leftmost daughter is either the specifier or the
head of that constituent in the sense of Jacken-
doff (1977). Third, we may suppose...
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Báo cáo khoa học: "FINITE STATE PROCESSING OF TONE SYSTEMS" potx
Ngày tải lên :
18/03/2014, 02:20
... levels of representation. FST
systems are conceptually bidirectional; they may
easily be processed in either direction with the
same finite state mechanism; the problem of the
recoverability of ... properties of the tone
sandhi systems of Tern and Bade very clearly, in
particular the contextual dependencies (sandhi).
The reverse (recognition) simulations show the ef-
fects of tone neutralization: ... terms of a class
of operations related to unification. The situation
in autosegmental phonology is simpler than in syn-
tax, in that each feature or tier can be modelled by
a finite state...
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Báo cáo hóa học: " Adaptive selection of antenna grouping and beamforming for MIMO systems" ppt
Ngày tải lên :
20/06/2014, 22:20
... beamforming systems,
in Proceedings of IEEE Asilomar Conference on Signals, Systems, and
Computers (October, 2008)
10. R Heath, A Paulraj, Antenna selection for spatial multiplexing systems based
on ... the jth element of the set S
i
. We can
obtain the beamforming vector of each sub-channel w
i
as the right singular vector corresponding to the largest
singular value of the SVD of H
i
. The received ... perfor-
mance of Figure 5 is slightly worse than the performance
of Figure 4. However, the relative performance of the
compared algorithms is similar in the two figures. The
performance of the mode...
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Báo cáo hóa học: " Research Article Bit Error Rate Approximation of MIMO-OFDM Systems with Carrier Frequency Offset and Channel Estimation Errors" ppt
Ngày tải lên :
21/06/2014, 11:20
... performance of
MIMO systems, without considering the effect of both the
frequency offset and channel estimation errors, is studied in
[18, 19].
This paper provides a generalized BER analysis of
MIMO- OFDM, ... Rate Approximation of MIMO- OFDM Systems with
Carrier Frequency Offset and Channel Estimation Errors
Zhongshan Zhang,
1
Lu Zhang,
2
Mingli You,
2
and Ming Lei
1
1
Department of Wireless Communications, ... the ith entry of vector a,and[B]
mn
is the mnth entry of
matrix B.
E{x} and Var{x} are the mean and variance of x.
2. MIMO- OFDM Signal Model
Input data bits are mapped to a set of N complex symbols
drawn...
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báo cáo hóa học:" Research Article Channel Characteristics and Performance of MIMO E-SDM Systems in an Indoor Time-Varying Fading Environment" pptx
Ngày tải lên :
21/06/2014, 18:20
... OLOS case, the Doppler spectrum of MIMO
channels is different from the U-shaped Jakes one.
6. MIMO E-SDM Systems
Before investigating the performance of MIMO E-SDM
systems in actual time-varying ... performance of MIMO E-SDM systems.
1. Introduction
The use of multiple antennas at both ends of a communica-
tion link, commonly referred to as a multiple-input multiple-
output (MIMO) system, ... single-output (SISO) systems, channel
capacity of MIMO systems can increase in proportion to
the number of antennas in Rayleigh fading environments
[1–3]. Moreover, when channel state information...
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Báo cáo hóa học: " Research Article Synthetic Stimuli for the Steady-State Verification of Modulation-Based Noise Reduction Systems" docx
Ngày tải lên :
21/06/2014, 22:20
... involves measuring the performance of noise reduction systems. Synthetic stimuli are proposed
as test signals, because they can be tailored to the parameter space of the noise reduction system under ... properly cited.
1. Introduction
Noise reduction systems provide users of hearing instru-
ments with increased listening comfort [1]. The aim of such
systems is to suppress uncomfortable sounds on ... [2].
Modulation-based noise reduction systems apply differ-
ent amounts of attenuation in different frequency ranges,
depending on the likelihood of speech presence in each of
them. Based on the observation...
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Báo cáo hóa học: " Research Article An Equivalent LMI Representation of Bounded Real Lemma for Continuous-Time Systems" pdf
Ngày tải lên :
21/06/2014, 22:20
... propose a new equivalent LMI representation
of BRL for linear continuous-time systems.
3. A new LMI representation of BRL
First, we propose a new equivalent LMI representation of BRL for linear continuous-time ... the problem of controlling the yaw angles of a satellite system that appear in 14.
The satellite system consisting of two rigid bodies joined by a exible link has the state- space
representation ... Article
An Equivalent LMI Representation of Bounded Real
Lemma for Continuous-Time Systems
Wei Xie
College of Automation Science and Technology, South China University of Technology,
Guangzhou...
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Báo cáo hóa học: " Research Article Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems" pdf
Ngày tải lên :
22/06/2014, 06:20
... bound of the MIMO system is found by analyzing it
into M
T
parallel SIMO systems. Each of these parallel systems
reduces to a MRC diversity system and therefore the ergodic
capacity bound of the ... complementary cdf of the capacity
of the resulted system when the Frobenius-norm-based al-
gorithm is applied to several schemes of receive ASF and for
various values of K (i.e., the number of phase shifters ... the jth row of F, being equal to f
j
= e
H
j
H,
and e
j
is the jth column of matrix E.
Recognizing that the ith row of matrix F can be written as
a linear combination of the rows h
i
of the full...
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