gsm global system for mobile communications pdf
GSM Global System for Mobiles
Ngày tải lên :
19/10/2013, 15:15
... (900)
35
35
124
10
10
45
2x7.2
2x7.2
2x25
460.4-467.6
488.8-496
869-894
450.4-457.6
478.8-486
824-849
GSM 450
GSM 480
GSM 850
Duplex
channels
Duplex
Spacing
BandDownlinkUplinkGSM systems
GSM Time
Division
Multiplex
Frame and Physical Channels
TS ... time-slots
BTS side
MSs side
BTS
TDMA Frame (4.615 ms)
3
TOPICS
• GSM CONCEPTS
• GSM SYSTEM ARCHITECTURE
• IDENTITIES USED IN GSM
• GSM CHANNELS
• GSM RADIO LINK
• MOBILITY MANAGEMENT
• CALL MANAGEMENT
• ... messages
• International Mobile Equipment Identifier (IMEI)
38
GSM Architecture
HLR
VLR
EIR
AUC
MSC
B
S
C
B
S
C
SMSC
PSTN
VMSC
Mobile
Station
GSM
Air interface
OMCR
TRAU
Base Station System
Network and...
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Tài liệu 68 Array Processing for Mobile Communications pdf
Ngày tải lên :
16/12/2013, 04:15
... Center for Telecom-
munications and Information Systems Laboratory, Stanford University, Stanford, CA, June
1994.
[2] Second workshop on smart antennas in wireless mobile communications, Center for ... selection performance analysis of a switched
multi-beamantenna systemin mobile communications environments, Stanford, CA,July 1995.
Second workshop on Smart Antennas in Wireless Mobile Communications.
[28] ... Telecom-
munications and Information Systems Laboratory, Stanford University, Stanford, CA, July
20-21, 1995.
[3] Third workshop on smart antennas in wireless mobile communications, Center for Telecom-
munications...
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Multiple Access Protocols for Mobile Communications - GPRS, UMTS and Beyond
Ngày tải lên :
02/03/2013, 16:59
... Control
MAHO Mobile Assisted Handover
MA Mobile Allocation (of radio frequency channels) in GSM
MAI Multiple Access Interference
MAIO Mobile Allocation Index Offset (for frequency hopping in GSM)
MBS Mobile ... which are discussed extensively
in Chapter 4.
For one 2G system called cdmaOne and most 3G systems, e.g. the Universal Mobile
Telecommunications System (UMTS), DS/CDMA was chosen as a basic multiple ... Communication Systems 25
2.2.1 Analogue First Generation Cellular Systems 25
2.2.2 Digital Second Generation Systems 25
2.3 First 3G Systems 27
2.3.1 Requirements for 3G 27
2.3.2 Evolution of 2G Systems...
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IP for 3G - Networking Technologies for Mobile Communications
Ngày tải lên :
27/10/2013, 17:15
... (Release 99) Architecture.
For readers familiar with the GSM, the MSC, G-MSC, HLR, and VLR (see Further reading
for more information on GSM) are simply the normal GSM components but with added ... spectrally efficient that 1G. GSM (Global System for Mobile
communication) has become the dominant 2G standard and roaming is now possible
between 150+ countries where GSM is deployed.
•
3G - ... (number of systems [9]).
2G systems have not stood still and are introducing higher-speed packet data services (so-
called 2.5G systems: the GSM 2.5G evolution is GPRS - GSM Packet Radio System) ....
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Tài liệu T24 – Giải pháp ngân hàng trung tâm thế hệ mới đối với phát triển bền vững - New Generation Core Banking System For Sustained Growth pdf
Ngày tải lên :
15/01/2014, 15:59
... build a core banking
system !!!
Before
•
Single Server
Architecture
•
End of Day Batch
Window
•
Performance Limits
Reached
•
Multi-company
•
LD/ PD
Techcombank “before” and “after”
T24 ...
policy
•
Long term strategy
New Generation Core Banking
System For Sustained Growth
A Solution with Temenos T24
Nguyễn Hướng Minh
Deputy Director
Center for Technology based Product Development and Application
Techcombank
Temenos ... servicing for customer
transactions
• Reduce costs and drive economies
of scale through shared best
practice
Align Core System Strategies to
Business Imperatives
Sample IT Implications
•
Systems...
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Tài liệu A Knowledge Management System for ERP Implementation pdf
Ngày tải lên :
16/01/2014, 16:33
... integrated KM system is proposed.
The system consists of cooperative working plat-
form, knowledge transfer platform, individual
KM platform, org anizational KM platform and
consulting platform. The ... proposes a KM system that consists of cooperative working platform, consulting
platform, individual KM platform, organizational KM platform, and knowledge transfer
platform. This system can effectively ... Lastly, a KM system is proposed
that consists of cooperative working platform,
consulting platform, individual KM platform ,
organizational KM platform, and knowledge
transfer platform. This system...
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Báo cáo khoa học: "PENS: A Machine-aided English Writing System for Chinese Users" pdf
Ngày tải lên :
08/03/2014, 05:20
... words of
their original form, while they should be of
different forms in different contexts. We exploit
morphology for this purpose, and expand each
word to all possible forms. For instance,
inflections ... labelled all 964 sentences, we
performed the sentence retrieval module on the
sentence set, that is, PENS retrieved example
sentences for each of the 50 queries. Therefore,
for each query, we compared ... PAT-Tree-Based Adaptive
Keyphrase Extraction for Intelligent Chinese
Information Retrieval. Special issue on
“Information Retrieval with Asian Language”
Information Processing and Management, 1998.
PENS:...
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Sprite: A Simple, Cheat-Proof, Credit-Based System for Mobile Ad-Hoc Networks potx
Ngày tải lên :
15/03/2014, 04:20
... bandwidth and storage requirement.
B. System performance vs. network resource
We next evaluate the performance of our system. One major
metric of the performance of our system is the message success
rate, ... Sprite, a simple, cheat-proof, credit-
based system for stimulating cooperation among selfish nodes in
mobile ad hoc networks. Our system provides incentive for mobile
nodes to cooperate and report actions ... discussed in Sec-
tion III, although our system provides incentive for cooperation
by giving more credit for forwarding a message, whether or
not to forward a specific message will depend on the...
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Multicarrier Techniques for 4G Mobile Communications
Ngày tải lên :
26/04/2013, 09:50
... Techniques for 4G Mobile Communications, Shinsuke Hara
and Ramjee Prasad
OFDM for Wireless Multimedia Communications, Richard van Nee and
Ramjee Prasad
Radio over Fiber Technologies for Mobile Communications ... (2G) systems in the 1990s, such as
Global Systems for Mobile Telecommunications (GSM) [1], Personal Digital
Cellular (PDC) [2], and Interim Standard (IS)-95 [3], on digital technologies
for voice-oriented ... present and future mobile communi-
cations systems. As an evolutional form of mobile phone systems, Interna-
tional Mobile Telecommunications (IMT)-2000 [4, 5], which corresponds
to 3G systems, aims...
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Tài liệu Cabling Standard - TSB-155 - IEEE 802.3an for Cat 6A 10GBase-T System - Draft 4.0 pdf
Ngày tải lên :
20/12/2013, 22:15
... 23
24
PN-3-0134 to be published as TSB-155
Draft 4.0
v
FOREWORD
1
2
(This foreword is not part of the Telecommunications Systems Bulletin) 3
4
At the request of the Institute of Electrical ... configuration 30
The channel test configuration is used by system designers and users of telecommunications 31
systems to verify the performance of the overall channel. The channel includes up ... TIA/EIA-568-B.2-1. The values in table 5
are provided for information only.
33
5.1
0003.0
204.0
0173.0924.1 f
f
ffossInsertionL
Channel
⋅++⋅+≤
dB (15) 34
For all frequencies greater than 250 MHz up...
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