digital mobile radio systems
Mobile Satellite Systems
Ngày tải lên :
14/09/2012, 11:26
... links for the
Mobile Satellite Systems 67
Figure 2.10 ORBCOMM network architecture.
Mobile Satellite Communication Networks58
Figure 2.6 Inmarsat service coverage (courtesy of Inmarsat).
Mobile Satellite ... The mobile- to -mobile call is delayed by
Mobile Satellite Communication Networks48
Figure 2.3 Possible S-PCN architectures for global coverage.
2.2.4 Asia Cellular Satellite, THURAYA and Other Systems
There ... are now a number of systems deployed that exploit geostationary satellites to provide
mobile services at the L-band. These regionally deployed systems focus on providing mobile
services to regions...
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The Mobile Radio Propagation Channel P1
Ngày tải lên :
28/10/2013, 11:15
... UHF
bands, for example, television, domestic radio, Citizens' Band radio, marine radio,
aeromobile radio (including instrument landing systems) and military radio. Several
of these services have ... therefore encompasses satellite mobile, aeromobile and maritime
mobile, as well as cordless telephones, radio paging, traditional private mobile radio
(PMR) and cellular systems. Any book which attempted ... unlikely that Marconi thought of
this experiment in terms of mobile radio, mobile radio it certainly was.
Nowadays the term `mobile radio& apos; is deemed to embrace almost any situation
where...
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The Mobile Radio Propagation Channel P2
Ngày tải lên :
07/11/2013, 03:15
... a major source of
problems to mobile radio systems in temperate climates.
REFERENCES
1. Jordan E.C. and Balmain K.G. (1968) Electromagnetic Waves and Radiating Systems.
Prentice Hall, New York.
2.Friis ... where the signal strength will exceed a speci®ed level.
In practice, mobile radio channels rank among the worst in terrestrial radio
communications. The path loss often exceeds the free space or ... and
therefore have the potential to cause interference between dierent radio
communication systems. Forward scattering of radio energy is suciently
dependable that it may be used as a mechanism...
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Advances in Cognitive Radio Systems pptx
Ngày tải lên :
07/03/2014, 21:20
... problem is further been divided into two parts.
44
Advances in Cognitive Radio Systems
Advances in Cognitive Radio Systems
32
2.8 Underlay Control Messaging (UCM)
This approach is the equivalent ... devices.
ADVANCES IN COGNITIVE
RADIO SYSTEMS
Edited by Cheng-Xiang Wang and
Joseph Mitola III
2
Control Plane for Spectrum Access and
Mobility in Cognitive Radio Networks with
Heterogeneous ... vol.2, no.2, April 2010, pp.159-163
Wideband Voltage Controlled Oscillators for Cognitive Radio Systems
5
behind this improvement lied in the fact that artificial transmission line (ATL)...
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digital & analog communication systems (8th edition)
Ngày tải lên :
05/04/2014, 12:54
... such as an AM radio signal (Chapter 4). Other basic concepts that
are focused on are spectrum, signal-to-noise ratio for analog systems, and probability of bit
error for digital systems. Moreover, ... Telecommunications 569
8–2 Telephone Systems 570
Historical Basis, 570
Modern Telephone Systems and Remote Terminals, 571
8–3 Digital Subscriber Lines (DSL) 577
G.DMT and G.Lite Digital Subscriber Lines, ... Evaluation, 609
E
b
͞N
0
Link Budget for Digital Systems, 612
Path Loss for Urban Wireless Environments, 613
8–7 Fiber-Optic Systems 618
8–8 Cellular Telephone Systems 620
First Generation (1G)—The...
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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
... Cataloguing in Publication Data
Guo, Y. Jay
Advances in mobile radio access networks—(Artech House mobile communications library)
1. Mobile communications systems
I. Title
621.3’845
ISBN 1-58053-727-8
Cover ...
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
half ... products. The interest in software radio has been mainly from mobile
terminal vendors due to the fact that mobile terminals need to roam between
different systems frequently. However, there...
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Designing mobile service systems sep 2007
Ngày tải lên :
25/05/2014, 09:22
... mobility. Four fundamental aspects of mobile
work are mobile workers, mobile tasks, mobile context, and mobile tech-
nology (Yuan & Zjeng, 2005). Examples of mobile workforces are sales-
people ...
categorise mobile services are described.
2.2 Categorisation of mobile services
Mobile information services are a merger of Internet and mobile telecom-
munication. Unlike the use of the mobile ... mo-
bile auction or reverse auction, mobile entertainment services, mobile office,
mobile distance education, wireless data centre and mobile music. You can
use mobile services anyplace, anytime,...
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Báo cáo hóa học: " Research Article Channel Sensing without Quiet Period for Cognitive Radio Systems: A Pilot Cancellation Approach" ppt
Ngày tải lên :
21/06/2014, 05:20
... cognitive radio systems, ”
IEEE Transactions on Wireless Communications,vol.8,no.10,
pp. 5112–5123, 2009.
[6] D. Chen, J. Li, and J. Ma, “In-band sensing without quiet
period in cognitive radio, ” ... “Maximum-minimum eigenvalue
detection for cognitive radio, ” in Proceedings of the 18th
Annual IEEE International Symposium on Personal, Indoor and
Mobile Radio Communications (PIMRC ’07), Athens, Greece,
September ... Jeong, J. A. Han, G. Ko, and M. S. Song, “An
efficient quiet period management scheme for cognitive radio
systems, ” IEEE Transactions on Wireless Communications,vol.
7, no. 2, pp. 505–509, 2008.
[4]S.S.Jeong,W.S.Jeon,andD.G.Jeong,“Dynamicchan-
nel...
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Báo cáo hóa học: " Research Article Resource Allocation in MU-OFDM Cognitive Radio Systems with Partial Channel State Information" potx
Ngày tải lên :
21/06/2014, 11:20
... “Fitness landscape
analysis for resource allocation in multiuser OFDM based cog-
nitive radio systems, ” ACM SIGMOBILE Mobile Computing
and Communications Review, vol. 13, no. 2, pp. 26–36, 2009.
[25] ... making
software radios more personal,” IEEE Personal Communica-
tions, vol. 6, no. 4, pp. 13–18, 1999.
[3] J. Mitola, Cognitive Radio Architecture: The Engineering Foun-
dations of Radio XML, Wiley-Interscience, ... 2009.
[15] T. Qin and C. Leung, “Fair adaptive resource allocation for
multiuser OFDM cognitive radio systems, ” in Proceedings
of the 2nd International Conference on Communications and
Networking...
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Báo cáo hóa học: "Research Article A Unified Approach to Optimal Opportunistic Spectrum Access under Collision Probability Constraint in Cognitive Radio Systems" pptx
Ngày tải lên :
21/06/2014, 19:20
... spectrum
opportunities with MAC-layer sensing in cognitive radio
networks,” IEEE Transactions on Mobile Computing, vol. 7, no.
5, pp. 533–545, 2008.
[17] S. Haykin, “Cognitive radio: brain-empowered wireless com-
munications,” ... “Sensing-throughput
tradeoff in cognitive radio networks: how frequently should
spectrum sensing be carried out?” in Proceedings of IEEE
International Symposium on Personal, Indoor and Mobile Radio
Communications ... Probability Constraint in
Cognitive Radio Systems
Qinghai Xiao,
1, 2
Yunzhou Li,
1
Xiaofeng Zhong,
1
Xibin Xu,
1
and Jing Wang
1
1
State Key Laboratory on Microwave and Digital Communications, Tsing...
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báo cáo hóa học:" Research Article Restless Watchdog: Selective Quickest Spectrum Sensing in Multichannel Cognitive Radio Systems Husheng Li" ppt
Ngày tải lên :
21/06/2014, 20:20
... standardizing (e.g., IEEE 802.22 [6, 7]) and
implementing (e.g., XG radio system [8]) the cognitive radio.
In a cognitive radio system, secondary users (without license)
can use frequency channels ... sensing,
which monitors the spectrum activity, is a key issue in
cognitive radio systems, particularly in wideband systems
which may contain multiple frequency channels. Due to
hardware limitation ... which monitors the spectrum activity in multiple channels, is studied for multichannel
cognitive radio systems with nonnegligible channel switching time (blind period). The spectrum sensor needs to...
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Báo cáo hóa học: " Research Article A SystemC-Based Design Methodology for Digital Signal Processing Systems" potx
Ngày tải lên :
22/06/2014, 19:20
... Journal on Embedded Systems
Volume 2007, Article ID 47580, 22 pages
doi:10.1155/2007/47580
Research Article
A SystemC-Based Design Methodology for
Digital Signal Processing Systems
Christian Haubelt, ... heterogeneous embedded systems
using symbolic search and multi-granular simulation,” in Pro-
ceedings of the Joint Conference on Languages, Compilers and
Tools for Embedded Systems: Software and ... for Em-
bedded Systems, pp. 18–27, Berlin, Germany, June 2002.
[15] V. Kianzad and S. S. Bhattacharyya, “CHARMED: a multi-
objective co-synthesis framework for multi-mode embedded
systems, ” in...
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