... 10 pages
doi:10.1155/2007/74890
Research Article
Characterization and Optimization of LDPC Codes for
the 2-User Gaussian Multiple Access Channel
Aline Roumy
1
and David Declercq
2
1
Unit
´
e ... paper has tackled the optimization of LDPC codes for
the 2-user Gaussian MAC and has shown that it is possi-
ble to design good irregular LDPC code...
... Zhong and Huang 40. Therefore, Theorem 4.3 is a generalization
of 40, Theorem 4.2. Moreover, by 40, Remark 4.2, Theorem 4.3 ia also a generalizationof
Theorems 4.1 and 4.4 due to He 38 and ... we further study
the characterizations of the boundedness and nonemptiness of solution sets for set-valued
vector equilibrium problems in reflexive Banach spaces, when both t...
... impulse.
The main purpose of this paper is to study the existence and global exponential
stability of anti-periodic solutions of system 1.1 by using the method of coincidence degree
theory and Lyapunov ... Conclusions
Using the time scales calculus theory, the coincidence degree theory, and the Lyapunov
functional method, we obtain sufficient conditions for the e...
... before it forwards them through the serial
port to the laptop. The first octet is a counter value, which
will be discussed later, and the second octet is the radio’s
calculation of the RSSI for ... errors toward the end
of the packets.
3.6. Multiple Access. The transmit and receive buffer sizes for
the CC2420 radio on the MicaZ motes are equivalent. As a
res...
... referee for valuable suggestions and comments, which
improved the quality of this paper. The work was supported by the NSF of China, the NSF
of Jiangxi Province of China 2008GQS0057, the Youth ... T-periodic solution
under the assumptions A1 and A2
. Thus, even for the case of ϕsϕ
p
s, Theorem 2.1
is a generalization of 7, Theorem 1.
In additio...
... nontrivial
solution of the BVP 1.1 and 1.2.
Next, we show the uniqueness of solutions of the BVP 1.1 and 1.2. Assume, to the
contrary, that there exist two nontrivial solutions y
1
and y
2
of the BVP ... y.
3.40
By the uniqueness of fixed points A in D,weget y y
∗
. Therefore, we have
lim
n →∞
x
n
lim
n →∞
y
n
y
∗
.
3.41
This completes the proo...
... completes the proof
of the theorem.
Hindawi Publishing Corporation
Boundary Value Problems
Volume 2010, Article ID 254928, 16 pages
doi:10.1155/2010/254928
Research Article
Existence and Uniqueness of ... 27.
Recently, Du and Zhao 7, by constructing lower and upper solutions and together
with the maximal principle, proved the existence and uniqueness of positi...
... I
τ−1
0] and D
2
= [I
τ−1
0; 0 0]. These estimates of C and
A constitute the model parameters for each action segment.
For the case of flow, the same estimation procedure is
repeated for the x-andy-components ... events
in the scene. Their system consists of algorithms which track
humans and vehicles on the image plane of the camera and
which render the tr...
... addition to the set of the candidates Φ, two other noise
correlation candidates are taken into account to enhance the
performance of the separation and the speech enhancement.
The first one is the identity ... adaptation,” the output of one
of the microphones and the separated output are compared.
In the case of “before separation,” the microphone closest...
... movement steps and the uniformity of presence
probabilities of void cells, in Figure 10 we plot the mean and
the standard deviation of the presence probabilities of void
cells as the number of movement ... plot the standard deviation of
thepresenceprobabilitiesofvoid cells with log
10
S
T
.Note
that the standard deviation of presence probabilities of void
cel...