wireless multiple access protocol in mobile computing
báo cáo hóa học:" Multiple access communications in future-generation wireless networks" potx
Ngày tải lên :
21/06/2014, 17:20
... “Polarization Division Multiple Access With Polarization
Modulation for LOS Wireless Communications” by Bin Cao, Qin-Yu Zhang,
and Lin Jin discusses a potential multiple access and modulation ... fair and
efficient wireless access in challenging interference scenarios, for example,
multiple networks deployed in the same geographical area and sharing a
common band.
In 1976, an ALOHA ... algorithm increases only linearly
with the number of users. In this algorithm, the different CFOs from different
users destroy the orthogonality among training sequences and introduce
multiple access...
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Multiple Access Protocols for Mobile Communications - GPRS, UMTS and Beyond
Ngày tải lên :
02/03/2013, 16:59
... extremely
large in the case of unconstrained channel access, resulting in a low inherent statistical
multiplexing gain. By combining CDMA with PRMA, it is possible to control the access
of users ... (P
loss
)
max
in multiples of σ
K
d Hamming distance
d
il
Interleaving depth
d
min
Minimum Hamming distance
e Error correcting capability of an (L, B, e) block code; also 2.718 282
f
CAF
Channel access ... frequency channels) in GSM
MAI Multiple Access Interference
MAIO Mobile Allocation Index Offset (for frequency hopping in GSM)
MBS Mobile Broadband System
MCS-1 Modulation and Coding Scheme 1 (for...
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Báo cáo hóa học: " Research Article Controlled Delegation Protocol in Mobile RFID Netwo" doc
Ngày tải lên :
21/06/2014, 11:20
... Conclusion is drawn in Section 4.
2. Delegation Protocol with Limits on
Reading Times
Whenamobilereaderisinanoff-line access situation, we
try to limit its reading times. Hence, we propose a protocol
that ... occasion.
Hence, a mobile reader has been developed in recent
years to combine mobile technology with traditional RFID
systems, through the integration of reading chips, PDA, and
mobile devices, hence mobile ... medium, provided the original work is properly cited.
To achieve off-line delegation for mobile readers, we propose a delegation protocol for mobile RFID allowing its readers access
to specific tags...
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Báo cáo hóa học: " Research Article Partial Interference and Its Performance Impact on Wireless Multiple Access Networks" potx
Ngày tải lên :
21/06/2014, 11:20
... 3.
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Partial interference
Binary interference
Stability region of slotted ALOHA
(a) p
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Báo cáo sinh học: " Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" pot
Ngày tải lên :
18/06/2014, 22:20
... discussed, inserting training symbols is a heuristic way to improve the performance. It is shown in the
25
Decentralized estimation over orthogonal multiple-
access fading channels in wireless ... communication SNR levels. It
is interesting to see that using more training symbols does not improve the performance of the MLE as
expected, because inserting training symbols will reduce the energy ... ts in [19], in di cate
that the separate source-channel coding scheme is optimal in fading channels with orthogonal multiple- access
protocols, which outperforms AF transmission, a simple joint...
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báo cáo hóa học:" Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" ppt
Ngày tải lên :
20/06/2014, 04:20
... communication SNR levels. It
is interesting to see that using more training symbols does not improve the performance of the MLE as
expected, because inserting training symbols will reduce the energy ... first inequality in (76) and t he second inequality in (77) are satisfied. From the condition
f(θ)(θ − Φ) < 0, it is not hard to find that the second inequality in (76) and the first inequality in ... Furthermore, since the estimation quality of the first stage is available, we use BLUE to obtain
ˆ
θ for exploiting the quality information instead of using the MLE in the M-step as in the standard...
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Advances in mobile radio access networks artech house publishers jun 2005 ebook ling
Ngày tải lên :
18/04/2014, 10:43
... 1-58053-727-8
10 9 8 7 6 5 4 3 2 1
TEAM LinG
30 Advances in Mobile Radio Access Networks
increase the efficiency of power amplifiers while maintaining linearity. Since the
efficiency of the state-of-the-art ...
Figure 2.6 PA Consulting’s software radio-based WCDMA base station.
TEAM LinG
Advances in Mobile
Radio Access Networks
TEAM LinG
TEAM LinG
62 Advances in Mobile Radio Access Networks
... UE-based solution maintains a fully functional GPS receiver
in the terminal. This requires the same functionality as described in terminal-
assisted GPS, plus additional means for computing the position...
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Báo cáo toán học: " Localization in mobile wireless and sensor networks" pot
Ngày tải lên :
20/06/2014, 21:20
... I A L Open Access
Localization in mobile wireless and sensor
networks
Monica Nicoli
1*
, Sinan Gezici
2
, Zafer Sahinoglu
3
and Henk Wymeersch
4
Accurate localization or tracking of wireless de ... a very large database of RSS fingerprints.
Machine learning techniques are employed to extract
the location information from online RSS measurements
showing promising performance for room-level ... errors, indoor
positioning, and localization in wireless sensor networks
(WSNs).
The first group of articles deals with the interaction of
positioning and communications at different layers of
the protocol...
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Báo cáo hóa học: " Research Article An Energy-Efficient MAC Protocol in Wireless Sensor Networks: A Game Theoretic Approach" pptx
Ngày tải lên :
21/06/2014, 17:20
... incomplete cooperative game theory in
wireless networks. In [9, 10], authors used the concept of
incomplete cooperative game theory in wireless networks for
first time and proposed the G-MAC protocol ... self-organizing and distributed networks as there are no
central nodes to assign channel access in sensor nodes.
In sensor networks, each node has a direct in uence
on its neighboring nodes while accessing ... all these information are
not necessarily available in incomplete information game
[13].
2.1. Incomplete Cooperative Game. As we mentioned earlier,
energy efficiency of MAC protocol in WSN is very...
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Báo cáo y học: " Non-syndromic multiple supernumerary teeth in a family unit with a normal karyotype: case report"
Ngày tải lên :
25/10/2012, 11:40
... Corresponding author: Prof. Francesco INCHINGOLO, Piazza Giulio Cesare – Policlinico 70124 – Bari. E-mail:
f.inchingolo@tin.it; f.inchingolo@doc.uniba.it. Tel.: 00390805593343 – Infoline: 00393312111104. ...
© Ivyspring International Publisher. All rights reserved
Case Report
Non-syndromic multiple supernumerary teeth in a family unit with a
normal karyotype: case report
Francesco Inchingolo
1
, ... found in the supe-
rior maxillary bone and mainly in the premaxilla
(90-98%)
7
, they are often impacted (88,7%) and are
often present in the palatine area
8,9
.
The prevalence of multiple...
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Efficient core selection for multicast routing in mobile ad hoc networks
Ngày tải lên :
23/11/2012, 15:03
... software and information distribution. Initially, almost all of these applications
were being used in intranets or in MBONE, and now, there are some Internet service
providers providing supports ... number of nodes in the
multicast tree can continue to change and multicast tree need to adapt to the movement
node (including or excluding of certain forwarding nodes of the tree). In order to ... mechanisms which are used for the
handling of sequence numbers in many link-state routing protocols such as OSPF or in the
building a spanning tree algorithm. It is enough to ensure that nodes can...
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