space division multiple access in wireless communication
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godara, lal chand - crc handbook of antennas in wireless communications [2002]
Ngày tải lên :
18/04/2014, 11:02
... orbiting satellites offering
continental and worldwide communications, data, tracking, and paging services. The experience gained
from these networks in the next few years will provide valuable input ... and NMT 900 in Europe; European Total Access
Communication System (ETACS) in the United Kingdom; C-450 in Germany; and Nippon Telephone
and Telegraph (NTT), JTACS, and NTACS in Japan.
In contrast ... James Llinas
Handbook of Antennas in Wireless Communications
Lal Chand Godara
Forthcoming Titles
Propagation Data Handbook for Wireless Communications
Robert Crane
The Digital Color Imaging Handbook
Guarav...
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Recent Advances in Wireless Communications and Networks Part 1 pptx
Ngày tải lên :
19/06/2014, 19:20
... techniques in wireless communications. Chapter 2
conducts a thorough review of the initial synchronization techniques applied to
wireless orthogonal-frequency -division- multiplexing (OFDM) communications. ... (SCTP) in wireless
communication networks. Chapter 13 investigates traffic control for composite
wireless access route of IEEE802.11/16 links.
Recent Advances in Wireless ... st
st
IE
θ
θ
θ
θ
θ
θσ
−
=
⎧⎫
∂
∂
⎪⎪
⎛⎞
=−
∑
⎨⎬
⎜⎟
∂
∂
⎝⎠
⎪⎪
⎩⎭
(16)
Finally, the inverse recipocal of the Fisher‘s information produced by the CRLB in the
AWGN channel.
X Preface
engineers to beginning or professional researchers. All interested...
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Recent Advances in Wireless Communications and Networks Part 2 doc
Ngày tải lên :
19/06/2014, 19:20
... higher in multicarrier communications than in single carrier communications
because of intersymbol interference. The mismatch or instability of the local oscillator
inevitably causes an offset in ... Advances in Wireless Communications and Networks
32
()
{
}
2
1
ˆ
argmax
p
θ
θλθ
′
=
(17)
In addition, several techniques for combining multiple frames have also been investigated
(Lin, 2003) ...
2.2.1 Timing offset
OFDM systems exploit their unique features by using a guard interval with a cyclic prefix to
eliminate intersymbol interference and intercarrier interference. In general,...
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Recent Advances in Wireless Communications and Networks Part 3 doc
Ngày tải lên :
19/06/2014, 19:20
... channel state information required at the receiver, we will
introduce four types of combining schemes, including selection combining, switch
combining, EGC, and MRC, in the following.
2.1.1 ... (Giannakis et al., 2006).
In this section, we first present various receive diversity schemes, including selection
combining, switch combining, equal-gain combining (EGC), and MRC. The well-known ... Advances in Wireless Communications and Networks
62
2.1.3 Maximum ratio combining
Fig. 3 shows the block diagram of the MRC scheme. MRC is a linear combining scheme, in
which multiple received...
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Recent Advances in Wireless Communications and Networks Part 4 ppt
Ngày tải lên :
19/06/2014, 19:20
... Will-be-set-by -IN- TECH
Spatial stream parser
Input bits
STBC
Symbol
mapping
Segment
S/P
Grouping
Spreading
GO-CDM
Symbol
mapping
Segment
S/P
Grouping
Spreading
GO-CDM
Antenna mapping
CDD IFFT CP
CDD ... Limits of Wireless Communications in a Fading
Environment when Using Multiple Antennas. Wireless Personal Communications,
Vol.6, No.3, (March 1998), pp.311-335, ISSN 0929-6212.
Foschini, G. ... therein), it is the application of multiple antenna at the transmitter side what
revolutionised the wireless community. In particular, the linear increase in capacity achieved
when jointly increasing...
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Recent Advances in Wireless Communications and Networks Part 5 pptx
Ngày tải lên :
19/06/2014, 19:20
... length in a
lattice, including a complexity analysis, Math. Comput. 44: 463–471.
Foschini, G. (1996). Layered space- time architecture for wireless communication in a
fading environment when using ... Division Multiple Access) . OFDMA is one of the principal
multiple access schemes for broadband wireless multiuser systems. It has being
proposed for use in several broadband multiuser wireless ... corresponding users’
rate vector are obtained from (8) and shown in Fig. 6 as a marker point in the boundary of the
rate region. Therefore, the marker points are the points of
R
0
located in the...
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Recent Advances in Wireless Communications and Networks Part 6 docx
Ngày tải lên :
19/06/2014, 19:20
... detection. Modulated
signals are in general couple with sine wave carriers, pulse trains, repeating spreading,
hopping sequences or cyclic prefixes, which result in built -in periodicity Kontorovich ... experiment is continued by taking an additional sample increasing
m by 1. However, if
m
∑
i=1
Λ
i
≥A, (40)
150
Recent Advances in Wireless Communications and Networks
16 Will-be-set-by -IN- TECH
Though ... equally combined to for Z
(N) .In
the intermediate case both components are combined according to (67) with more and more
emphasis put on in- phase component X
(N) as coherency increases with increase...
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Recent Advances in Wireless Communications and Networks Part 7 pot
Ngày tải lên :
19/06/2014, 19:20
...
In Proceeding of IEEE WCNC’10, 2010.
Foschini, G. J. & Gans, M. J. (1998). On limits of wireless communications in a fading
environment when using multiple antenna,
Wireless Personal Communication ...
Magazine
, vol. 6, no. 3, pp. 311-335, 1998.
Foschini, G. J. et al. (2006). Coordinating multiple antenna cellular networks to achieve
enormous spectral efficiency,
in IEEE Proceedings on Communications, ...
using the precoding vectors defined in (25) and considering (26), the received signal in (24)
reduces to,
,,,,,
,,
1
B
eq
kl bkl kl kl
bkl
b
ps
=
=+
∑
yhn
(27)
Recent Advances in Wireless...
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Recent Advances in Wireless Communications and Networks Part 8 pdf
Ngày tải lên :
19/06/2014, 19:20
... corresponding to
dynamic changes in link characteristics, link quality and link status. It acts all the instances
to make event detection and notify, still maintaining the actual link connection ... blocking probability of new call is same to dropping probability of vertical
handoffs. Considering voice service, the blocking probability
w
b
p
in WLAN is determined
by incoming traffic intensity
()i
ρ
, ...
moving back and forth between the two neighbouring wireless networks—or in general
around a corner that involves three or more wireless networks—. This aspect in known in
literature as ping-pong...
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Recent Advances in Wireless Communications and Networks Part 9 ppt
Ngày tải lên :
19/06/2014, 19:20
... code line 27 in Fig. 2). To
make it compatible with IPv6, lines indicated in Table 4 should be replaced.
1 int main(int argc, char *argv[])
2 {
3 int sockfd, newfd;
4 socklen_t sin_size; ... Use of SCTP in Wireless Networks
257
1 int main()
2 {
3 int connSock, in, ret;
4 struct sockaddr _in servaddr;
5 struct sctp_status status;
6 struct sctp_sndrcvinfo sndrcvinfo;
7 struct ... IPv6. Lines
indicated in the first column should be replaced with lines shown in the second column
Line# in Fig. 1 New code for IPv6
5-6 struct sockaddr _in6 local6;
struct sockaddr _in6 remota6;...
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Recent Advances in Wireless Communications and Networks Part 10 pot
Ngày tải lên :
19/06/2014, 19:20
... uplink and downlink in
terminals. In rtPS class and nrtPS class, BS assigns data grants to downlink, and polls to
terminals in accordance with the reserved capacity for uplink in each terminal, ... increase in average delay of source link when source link is 11-uplink or
16-uplink in nrtPS or 16-link in BE. The second item means the increase in a number of
285
Traffic Control for Composite Wireless ... of source 11-link and destination 11-link.
2.3 Cost of M-route compositing multiple 11-Links for d ownload traffic
A base station associates its 11-interface with multiple terminals in its coverage....
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Recent Advances in Wireless Communications and Networks Part 11 docx
Ngày tải lên :
19/06/2014, 19:20
... terminals
in 11a, as mentioned in 5.2. In area-B, the packet collision and loss in 11b further increase
because of the increase in traffic, and the large number of retransmissions in MAC brings ... routing: This type of routing protocols uses multiple paths instead of a single path in
order to enhance network performance.
ã Query-based routing: In this type of routing protocol destination ... infrastructure. In a Wireless Sensor Network, the individual nodes are capable
of sensing their environments, processing the information locally, or sending it to one or
more collection points...
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Recent Advances in Wireless Communications and Networks Part 12 ppt
Ngày tải lên :
19/06/2014, 19:20
... Frequency Division Multiple Access
(OFDMA) is employed in the downlink, while the technically similar but less power-
demanding Single Carrier – Frequency Division Multiple Access (SC-FDMA) is used in ... Architecture
for Integrating Wireless Sensor Networks into the Internet of Things, Proceedings of
3rd Symposium of Ubiquitous Computing and Ambient Intelligence 2008, Springer
Berlin/Heidelberg, ... supports Multiple- Input -Multiple- Output (MIMO) technology. The standard
defines asymmetrical data rates and modulations for uplink and downlink, using different
access schemes for each link. In particular,...
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Recent Advances in Wireless Communications and Networks Part 13 pot
Ngày tải lên :
19/06/2014, 19:20
... transcoding
server was dynamically determined by the dynamic transcoding path, where each node
represents a transcoding server. After traversing all nodes in the path through message
passing, in ... flexibility and interoperability in content
adaptation.
2. Jena Inference Engine – This is the decision engine to inference and to generate
transcoding parameters. We make use of the engine without ... define several vocabularies to represent the actions in removing an element
in text/html document, and in changing the coding of a web page. For MIME type t,
suppose the set of transcoding...
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Recent Advances in Wireless Communications and Networks Part 14 docx
Ngày tải lên :
19/06/2014, 19:20
...
1. Introduction
Recent advances in wireless communication, as well as embedded computing, have opened
many new exciting opportunities for wireless sensor networks. Miniature and low-cost
wireless ... of wireless
devices can impede real-time operations as required by control or monitoring systems. In
addition, communication in a wireless network is inherently less reliable than that in cable-
based ... monitoring and control both involve acquiring response data in real time. In
order to transmit real-time data, coaxial cables are normally employed as the primary
communication link. Cable installation...
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