code division multiple access techniques in optical fiber networks
Code Division Multiple Access CDMA pdf
Ngày tải lên :
27/06/2014, 14:20
... 64
2.8 Multiple Access Performance of Frequency-Hopped
Code Division Multiple Access 67
2.9 Summary 71
3. Cellular Code Division Multiple Access 73
3.1 Principles of Cellular Code Division Multiple ... time division
multiple access and frequency division multiple access. Additionally, random access schemes
such as carrier sense multiple access are examined.
In Chapter 2, basic spread spectrum techniques ... Spectrum Techniques for
Code Division Multiple Access
In the previous chapter, we reviewed the basic concepts of multiuser communications and the
multiple access techniques used to allow multiple...
- 192
- 607
- 1
Code Division Multiple Access (CDMA) phần 1 doc
Ngày tải lên :
07/08/2014, 21:20
... Conflict-Free Medium Access Control 2
1.1.1 Time Division Multiple Access 3
1.1.2 Frequency Division Multiple Access 5
1.1.3 Code Division Multiple Access 6
1.1.4 Traffic Engineering and Trunking Efficiency ... 64
2.8 Multiple Access Performance of Frequency-Hopped
Code Division Multiple Access 67
2.9 Summary 71
3. Cellular Code Division Multiple Access 73
3.1 Principles of Cellular Code Division Multiple ... Summary 22
2. Spread Spectrum Techniques for Code Division Multiple Access 23
2.1 Forms of Code Division Multiple Access 23
2.2 Direct Sequence Code Division Multiple Access 24
2.2.1 Power Spectral...
- 19
- 346
- 0
theory of code division muitiple access communication
Ngày tải lên :
01/06/2014, 11:27
... designed
by using digital modulation techniques at the transmitter (including both source
coding and channel error-correcting coding) and the corresponding signal pro-
cessing techniques at the ... resistance to signal interference from multiple trans-
mission paths and potentially higher bandwidth efficiency in multiple access
communication than in other technologies.
In the beginning of this chapter ... simplex channels.
Frequency division multiple access (FDMA) and time division multiple access
(TDMA) are the two major access techniques used to share the available band-
width in a conventional mobile...
- 412
- 505
- 0
báo cáo hóa học:" Multiple access communications in future-generation wireless networks" potx
Ngày tải lên :
21/06/2014, 17:20
... article “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 ... 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 channel ... carrier frequency offset (CFO) estimation in the uplink of multiuser multiple-
input multiple- output (MIMO) orthogonal frequency division multiplexing
(OFDM) systems. Conventional maximum likelihood...
- 17
- 306
- 0
Báo cáo hóa học: " Iterative Pilot-Layer Aided Channel Estimation with Emphasis on Interleave-Division Multiple Access Systems Hendrik Schoeneich and Peter Adam Hoeher" docx
Ngày tải lên :
22/06/2014, 23:20
... H. Mahadevappa and J. G. Proakis, “Mitigating multiple
access interference and intersymbol interference in uncoded
CDMA systems with chip-level interleaving,” IEEE Transac-
tions on Wireless Communications, ... estimation schemes suitable for interleave -division multiple access (IDMA) systems are presented. Training and data
are superimposed. Training-based and semiblind linear channel estimators are derived ... “Adaptive interleave -division
multiple access a potential air interface for 4G bearer ser-
vices and wireless LANs,” in Proceedings of the 1st IFIP Inter-
national Conference on Wireless and Optical...
- 15
- 282
- 0
Báo cáo hóa học: " Bounds on the Outage-Constrained Capacity Region of Space-Division Multiple-Access Radio Systems" docx
Ngày tải lên :
23/06/2014, 01:20
... region
should increase linearly in each dimension as ρ increases lin-
early in dB. As a result, we would also expect the outage ca-
pacity region to increase linearly in each dimension as ρ in-
creases. ... Signal Processing 2004:9, 1288–1298
c
2004 Hindawi Publishing Corporation
Bounds on the Outage-Constrained Capacity Region
of Space -Division Multiple- Access Radio Systems
Haipeng Jin
Center for ... prevents us from obtaining closed-form expressions for
multiple- mobile cases similar to those shown in (A.2)and
(35).
4. NUMERICAL RESULTS
The bounding techniques introduced in the previous section
will...
- 11
- 372
- 0
Multiple Access Techniques for Wireless Communications ppsx
Ngày tải lên :
11/07/2014, 21:20
... large bandwidth.
This spreading occurs by combining the transmitter signal with a
spreading sequence.
Code Division Multiple Access (CDMA) (1)
Multiple Access Techniques for Wireless
Communications
2005/07/06
Weng ...
Wireless Access Tech. Lab.
Packet Radio (1)
In packet radio (PR) access techniques, many subscribers
attempt to access a single channel in an uncoordinated (or
minimally coordinated manner.
Collision ... user.
Code Division Multiple Access (CDMA) (4)
Wireless Access
Tech. Lab.
CCU
Wireless Access Tech. Lab.
Packet Radio Protocols
, vulnerable period is defined
as the time interval during...
- 60
- 501
- 0
Báo cáo hóa học: " Research Article An Adaptive Time-Spread Multiple-Access Policy for Wireless Sensor Networks" pot
Ngày tải lên :
22/06/2014, 19:20
... and Kumar in their seminal
work regarding capacity in wireless networks, [26], or other
researchers [27].
In more detail, under the original TSMA policy proposed
by Chlamtac and Farago in [14], ... system throughput is required in a small number
of frames since the beginning of the network operation). This
interesting case is demonstrated using simulation results in
the sequel.
4.1. Simulation ... data are forwarded
towards a cer tain destination in the network (the sink node),
while in ad hoc networks the destination of the data can be
any node. Depending on the particular ad hoc and sensor...
- 8
- 275
- 0
Routing and Wavelength Assignment in Optical WDM Networks ppt
Ngày tải lên :
06/08/2014, 00:21
... mainly point-to-point traffic, another attractive feature of light-trees is
the inherent capability for performing multicasting in the optical domain (as opposed to performing
multicasting at a higher ... the increased complexity of the problem and yet
produce good solutions. In the following we summarize the recent work on multicasting in optical
networks, but the reader should keep in mind that ... multicasting in wavelength routed optical networks were first demonstrated
in [24]. Specifically, it was shown that using light-trees (spanning the source and destination nodes)
rather than individual...
- 19
- 409
- 0