hybrid multiple access techniques computer networks ppt
Tài liệu 2.548 Mạng máy tính – K49 (Computer Networks) ppt
Ngày tải lên :
24/01/2014, 04:20
... Andrew S. Tanenbaum, Computer Networks, Pearson Education International, Fourth
Edition – 2003
[2] Joseph L. Hammond, Peter J. P. O’Reilly, Performance Analysis of Local Computer
Networks, Addison-Wesley ... chế cảm nhận sóng mang (carrier sense techniques) trong mạng truy nhập ngẫu
nhiên
− Khái niệm đa truy nhập cảm nhận sóng mang CSMA (carrier sense multiple
access)
Cơ chế non-persistent CSMA ... and Internetworking
Protocols, Second Edition, Addison-Wesley
2.548
Mạng máy tính – K49
(Computer Networks)
Số đơn vị học trình: 4
I. Mục đích
Môn học cho phép sinh viên có những kiến...
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Tài liệu The OSI Model: Understanding the Seven Layers of Computer Networks ppt
Ngày tải lên :
24/01/2014, 09:20
... Knowledge Course Director, Network+, CCNA, CTP
The OSI Model: Understanding the
Seven Layers of Computer Networks
Copyright â2006 Global Knowledge T
raining LLC. All rights reserved.
Page 2
Layer ... Internet
Protocol (IP) addresses mak
e networks easier to both set up and connect with one another
. The Internet uses
IP addressing to provide connectivity to millions of networks around the world.
To ... portion of
the IP addressing to route traffic between different networks. Each router must be configured specifically for
the networks or subnets that will be connected to its interfaces.
Routers...
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Báo cáo hóa học: " Enabling location-aware quality-controlled access in wireless networks" ppt
Ngày tải lên :
21/06/2014, 00:20
... 2011:102
http://jwcn.eurasipjournals.com/content/2011/1/102
Page 5 of 19
RESEARCH Open Access
Enabling location-aware quality-controlled access
in wireless networks
Hwangnam Kim
1*
, Hyun Soon Kim
1
, Suk Kyu Lee
1
, ... hoc networks. IEEE Trans. Parallel Distrib.
Syst. 17(9), 912–922 (2006)
24. IEEE 802.11 WG, Part 11, Wireless LAN medium access control (MAC) and
physical layer (PHY) specification: medium access ... downlink compensation access
(DCA) algorithm in [16] gives higher priority to the AP
with smaller inter -frame space. In the proposed method
of [17], each sending station def ers its access based on
the...
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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
... Wirel es s sensor networks: a survey. Comput.
Netw. 38(4), 393–422 (2002)
2. J-J Xiao, A Ribeiro, Z-Q Luo, GB Giannakis, Distribu te d compression-estimation using wireless sensor
networks. IEEE ... sensor networks
part I: G aus s ian case. IEEE Trans. Signal Process. 54(3), 1131–1143 (2006)
5. A Ribeiro, GB Giannakis, Bandwidth-constrained d is t r ibu t ed estimation for wireless sensor networks
part ... estimation for wireless sensor networks. IEEE Signal
Process. Lett. 14(10), 669–672 (2007)
8. J Fang, H Li, Distributed adaptive quantization for wireles s sensor networks: from delta modulation...
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Tài liệu Module 5: Configuring Access for Remote Clients and Networks ppt
Ngày tải lên :
10/12/2013, 16:16
... when both computer
endpoints support IPSec. IPSec is preferred because it is more secure
than PPTP, but both computer endpoints may not be able to support
IPSec.
ã Use PPTP. Use PPTP only ... only on the
ISA Server client computer.
Module 5: Configuring Access for Remote Clients and Networks 17
Exercise 2
Configuring a VPN Connection Between Networks
In this exercise, you ... Server 2000.
Note
Module 5: Configuring Access for Remote Clients and Networks 5
Connecting Remote Networks to a Local Network
VPN Tunnel
ISA Server
Computer
Remote Network
Remote Network
Internet
Internet
Local...
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Tài liệu Ethernet Access for Next Generation Metro and Wide Area Networks pptx
Ngày tải lên :
21/12/2013, 06:15
... over a single Ethernet access link. To provide redundancy for the branch office access
link, a second access link should be provisioned with local loop redundancy. Multiple access routers
(7200VXR ... is to supplement the EVPL WAN with an alternative WAN
access method. Direct Internet access through a traditional serial WAN or Internet access provisioned by
way of a port-based Ethernet handoff ... examples of where a trunked handoff might be used:
ã
EVPL
ã
EVPL access to ATM service interworking
ã
EVPL access to Frame Relay
ã
EVPL access to MPLS
Figure 4 shows a trunked handoff using IEEE...
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Tài liệu Breaking into computer networks from the Internet pptx
Ngày tải lên :
24/01/2014, 09:20
... find out which networks in the larger netblocks are routed
on the Internet? How do we do this? Only the core routers on the Internet
know which networks are routed. We can get access to these ... above-mentioned techniques. There is no easy way
to be 100% sure all of the time that you are not traceable. The nature of
the "hack" should determine how many "stealth" techniques ...
www.citibank.com.au
www.citibank.com.bh
www.citibank.com.bi
www.citibank.com.br
- 10 - Breaking into computer networks from the Internet [Roelof Temmingh & SensePost]
the name. And the servers...
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Báo cáo khoa học: Kinetic hybrid models composed of mechanistic and simplified enzymatic rate laws – a promising method for speeding up the kinetic modelling of complex metabolic networks pptx
Ngày tải lên :
23/03/2014, 06:20
... good performance of the hybrid models. We
propose the hybrid modelling approach as a means to speed up the devel-
opment of reliable kinetic models for complex metabolic networks.
Abbreviations
DPGM, ... normal
External
glucose
3–15 m
M
External
lactate
1–8 m
M
PL Hybrid 7.6 3.3 0.3 0.0 2.6 100 100 100 100
Fully simplified 38.0 23.9 5.0 0.5 5.1 100 100 100 100
MM Hybrid 8.9 3.4 1.4 0.1 2.6 100 100 100 100
Fully ... simplified 50.9 39.1 17.2 19.2 5.3 46 100 100 100
LL Hybrid 9.6 3.3 40.4 0.1 1.4 61 100 100 100
Fully simplified 22.3 13.7 41.0 0.4 5.9 84 100 100 100
MA Hybrid 14.2 3.7 16.2 0.1 3.4 100 91 100 100
Fully...
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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
... suboptimal decentralized estimators in wireless sensor networks over orthogonal multiple-
access fading channels in this paper. Considering multiple- bit quantization for digital transmission, we ... amplify-and-forward (AF)
transmission, which is proved to be optimal in quadratic Gaussian sensor networks under multiple- access
channels (MACs) with AWGN [17]. The power scheduling and energy efficiency of AF ... will be made available soon.
Decentralized estimation over orthogonal multiple- access fading channels in
wireless sensor networks optimal and suboptimal estimators
EURASIP Journal on Advances...
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Báo cáo hóa học: " Multihop relaying and multiple antenna techniques: performance trade-offs in cellular systems" ppt
Ngày tải lên :
21/06/2014, 01:20
... M.2135
16. IEEE Standard for Local and Metropolitan Area Networks Part 16. Air Interface
for Broadband Wireless Access Systems, Amendment 1– Multiple Relay
Specification (June 2009). IEEE Std. 802.16j-2009
17. ... MIMO
relay networks. IEEE Trans Wireless Commun. 5(6), 1433–1444 (June 2006)
21. IEEE Standard for Local and Metropolitan Area Networks Part 16. Air Interface
for Broadband Wireless Access Systems ... model
for multiple input multiple output (MIMO) simulations. ETSI, Tech Rep
(September 2003). 3GPP TR 25.996 Version 6.1.0 Release 6
23. K Jacobson, WA Krzymień, Multi-hop relaying and multiple...
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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
... of interference on multiple
access networks, we propose an analytical framework to
characterize partial interference for two representative types
of multiple access wireless networks, namely, ... analyzing the performance
of wireless multiple access protocols.
8. Conclusion
In this paper, we have introduced the notion of partial inter-
ference in wireless multiple access systems and illustrated
the ... Its Performance Impact on
Wireless Multiple Access Networks
Ka-Hung Hui,
1
Wing Cheong Lau,
2
and Onching Yue
2
1
Department of Electrical Engineering and Computer Science, Northwestern University,...
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báo cáo hóa học:" Multiple access communications in future-generation wireless networks" potx
Ngày tải lên :
21/06/2014, 17:20
... in Multiple Access Communications such as new
cooperative MAC protocols; spectrum sharing, and channel assignment
techniques for cognitive radio networks; new results on PHY layer multiple
access ... “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 ... formatted
PDF and full text (HTML) versions will be made available soon.
Multiple access communications in future-generation wireless networks
EURASIP Journal on Wireless Communications and Networking...
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báo cáo hóa học:" Research Article Resource Allocation for the Multiband Relay Channel: A Building Block for Hybrid Wireless Networks" ppt
Ngày tải lên :
21/06/2014, 18:20
... optimal
resource allocation on the bounds obtained for the MBRC,
that is, for hybrid wireless networks where the source
node has access to distinct bands (standards) and a second
node that overhears ... for the Multiband Relay Channel:
A Building Block for Hybrid Wireless Networks
Kyounghwan Lee,
1
Aylin Yener,
2
and Xiang He
2
1
Reverb Networks, 20099 Ashbrook Place, Suite 105, Ashburn, VA ... relay network in [15]; yet, for the hybrid wireless
network considered, the rate maximization leads to a dif-
ferent optimization problem than [15]: in a hybrid network,
in addition to power...
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Báo cáo hóa học: " Research Article Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels" ppt
Ngày tải lên :
21/06/2014, 22:20
... the capacity analysis given
in Section 3 for a single user to be extended to a multiple-
access system.
4.1. Multiple- access interference model
Asgivenin(4), the received signal is modeled as
r(t)
=
K
k=1
L
l=1
a
lk
(t)X
(k)
l
t ... active in the multiple- access system, the optimal
PPM receiver has a complex structure that takes advantage
of all receiver knowledge regarding the characteristics of
the multiple- access interference ... Capacity of a multiple access UWB system with PAM over
a multipath fading channel with L
= 4, m = 0.65, K = 200, G =
100, and P
x
=−11 dBm.
The instantaneous capacity for a multiple access UWB
system...
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Báo cáo hóa học: " Research Article Analysis of Coded FHSS Systems with Multiple Access Interference over Generalized Fading Channels" ppt
Ngày tải lên :
21/06/2014, 23:20
... spread-spectrum multiple- access
communications over fading channels,” IEEE Transactions on
Communications, vol. 30, no. 5, part 2, pp. 996–1009, 1982.
[3] G. Einarsson, “Coding for a multiple- access frequency-
hopping ... applications
because the performance is not affected significantly by the
frame size.
In cellular networks, multiple access interference (MAI)
may arise when more than one user transmit over the same
frequency ... 346730, 9 pages
doi:10.1155/2008/346730
Research Article
Analysis of Coded FHSS Systems with Multiple Access
Interference over Generalized Fading Channels
Salam A. Zummo
Department of Electrical...
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