Báo cáo hóa học: " Research Article Efficient MAC Protocols for Wireless Sensor Networks Endowed with Directive Antennas: A Cross-Layer Solution" pot
Báo cáo hóa học: " Research Article Efficient MAC Protocols for Wireless Sensor Networks Endowed with Directive Antennas: A Cross-Layer Solution" pot
... for Wireless Sensor Networks Endowed
with Directive Antennas: A Cross-Layer Solution
Gianfranco Manes, Romano Fantacci, Francesco Chiti, Michele Ciabatti, Giovanni Collodi,
Davide Di Palma, Ilaria ... Krishnamachari, and C. S. Raghavendra, “An adap-
tive energy-efficient and low-latency MAC for data gathering
in sensor networks, ” in Proceedings of International Works...
Báo cáo hóa học: " Research Article Efficient Data Association in Visual Sensor Networks with Missing Detection" ppt
... (a) Forward exact. (b) Forward approximate
I. (c) Forward approximate II. (d) Backward exact. (e) Backward
approximate I. (f) Backward approximate II.
Table 1: The mean travel time between adjacent ... objects labels and
continuous states underlying appearance and spatiotemporal
observations. The model parameters are treated as a part
of the state, allowing them to be learnt automatically...
Báo cáo hóa học: "Research Article Efficient MAC Protocol for Subcarrier-Wise Rate Adaptation over WLAN" potx
... broadband channel model.
All of the stations except for the AP are randomly distributed
in a circular area with a diameter of 100 meters and move
randomly at a speed of 1 m/sec. The AP is located at the
center ... data rate) to each subcarrier according
to its channel condition provides more reliable and efficient
data transmission than applying the same constellation size
to all subc...
Báo cáo hóa học: " Research Article Dynamic Session-Key Generation for Wireless Sensor Networks" ppt
... meteorological information, monitoring of
health information, information gathering, and tracking on
the battlefield. Using a sensor network in an environment
such as a battlefield leaves information ... the
information received by the base station is accurate. This
can also be applied in weather forecasting. Calculations
from the cluster node can increase the accuracy of detected
tempera...
Báo cáo hóa học: " Research Article Energy-Constrained Optimal Quantization for Wireless Sensor Networks" doc
... 5}. (a) Simulated mean-square estimation
error with equal energy allocation among sensors. (b) Simulated
mean square estimation error with joint optimization of energy al-
location and a number ... pages
doi:10.1155/2008/462930
Research Article
Energy-Constrained Optimal Quantization for
Wireless Sensor Networks
Xiliang Luo
1
and Georgios B. Giannakis
2
1
Qualcomm Inc., San...
Báo cáo hóa học: " Research Article Efficient Uplink Modeling for Dynamic System-Level Simulations of Cellular and Mobile Networks" ppt
... snapshot-like simulators which do
not have a time axis. In a dynamic simulator, this approach is
probably less accurate than the first one.
4. Performance Metrics
So far, we have an (almost) analytical ... not
increase the initial P0
c
which has been defined above. Note
that this automatic adaptation of a cell parameter can already
be considered as a SON mechanism.
Figure 8 depicts the...
Báo cáo hóa học: "Research Article Efficient Transmission Schemes for Multiuser MIMO Downlink with Linear Receivers and Partial Channel State Information" potx
... China, March 2007.
[23] M. A. Maddah-Ali, M. A. Sadrabadi, and A. K. Khandani,
“Broadcast in MIMO systems based on a generalized QR
decomposition: signaling and performance analysis,” IEEE
Transactions ... Abramowitz and I. A. Stegun, Handbook of Mathematical
Functions with Formulas, Graphs, and Mathematical Tables,
Dover, New York, USA, 1972.
[33] A. Edelman, Eigenvalues and conditi...
Báo cáo hóa học: " Research Article Opportunistic Data Collection in Sparse Wireless Sensor Networks" docx
... opposite approach.
Having efficiency as a goal, a mostly single-copy
approach was chosen, with an additional optimization. In a
traditional single-copy approach, a node forwards a message
and subsequently ... for any
scenario, as long as alarm messages make up for a small
fraction of the total.
EURASIP Journal on Wireless Communications and Networking 3
2.2. Spray and Wait....
Báo cáo hóa học: " Research Article Distributed Event-Region Detection in Wireless Sensor Networks" pot
... that us-
ing training data has its disadvantages, for example, the accu-
racy of τ
R
is a ected by the capability of the training data in
capturing the true field. In practice, the training data ... determine an appropriate λ by a calibration pro-
cedure. The calibration procedure is also used in [6]forpa-
rameter choices. Generally speaking, a set of “training data”
are randomly genera...
Báo cáo hóa học: " Research Article Efficient Dispersion Generation Structures for Spring Reverb Emulation" ppt
... fractional delay is necessary for precise time alignment
of the two bands. A good fit for this purpose is a standard all-
pass interpolated fractional delay line. However, in contrast
to usual applications ... where a specific fractional delay time
at DC is required, we need to match a particular fractional
delay at an arbitrary frequency. The equation specifying the
group-delay of...
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