Báo cáo hóa học: "Research Article Diversity Techniques for Single-Carrier Packet Retransmissions over Frequency-Selective Channels" docx
Báo cáo hóa học: "Research Article Diversity Techniques for Single-Carrier Packet Retransmissions over Frequency-Selective Channels" docx
... and Networking
Volume 2009, Article ID 406028, 10 pages
doi:10.1155/2009/406028
Research Article
Diversity Techniques for Single-Carrier Packet Retransmissions
over Frequency-Selective Channels
Abdel-Nasser ... integrated
packet combining for both diversity schemes with the
purpose of showing the performance-complexity tradeoff
achieved by these diversity technique...
Báo cáo hóa học: " Research Article MMSE Beamforming for SC-FDMA Transmission over MIMO ISI Channels" pot
... transmit beamforming for single-carrier frequency-division multiple access (SC-FDMA) transmission over
frequency-selective multiple-input multiple-output (MIMO) channels. The beamforming filters ... beamformer at equal or even lower
transmit power. Therefore, eigenbeamforming is optimum
and considered further in the following.
5.2. MSE Minimizing Po wer Allocation for Eigenbeamformin...
Báo cáo hóa học: " Research Article Appropriate Algorithms for EstimatingFrequency-Selective Rician Fading MIMO Channels and Channel Rice Factor: Substantial Benefits of Rician Model and Estimator Tradeoffs" ppt
... 7.
Notation:(
·)
H
is reserved for the matrix Hermitian, (·)
−1
for
the matrix inverse, (
·)
T
for the matrix (vector) transpose,
(
·)
∗
for the complex conjugate, for the Kronecker product,
tr
{·} for the trace ... the
multipath MIMO channel.
For Rician frequency-selective fading channels, the ele-
ments of the matrix H
l,
for all l ∈ [0, L], are defined similar
to [45, 46] i...
Báo cáo hóa học: " Research Article Distributed Cooperative Transmission with Unreliable and Untrustworthy Relay Channels" docx
... This storage
overhead is small. For example, when M
= 10 and each
LQI entry is represented by 4 bytes, the storage overhead is
about 440 bytes. This storage overhead is acceptable for most
wireless ... lower communication overhead than the traditional
schemes.
Besides the communication overhead, the proposed
scheme introduces some additional storage overhead. The
storage overhead comes fr...
Báo cáo hóa học: " Research Article Novel Techniques of Single-Carrier Frequency-Domain Equalization for Optical Wireless Communications" doc
... 0.01 W, the performances of all SCFDE schemes are
almost the same due to their lower PAPR. For an input
signal power of 1 W for QPSK and 0.1 W for 16 QAM and
64 QAM, DQO-SCFDE performs better than ... Signal Processing
Volume 2011, Article ID 393768, 13 pages
doi:10.1155/2011/393768
Research Article
Novel Techniques of Single-Carrier Frequency-Domain
Equalization for Optical W...
báo cáo hóa học:" Research Article Diversity-Enabled and Power-Efficient Transceiver Designs for Peak-Power-Limited SIMO-OFDM Systems" potx
... channel
noise power.
3. Diversity Combining in Linear
SIMO Channels
For linear SIMO channels, several diversity combining
techniques are available to achieve the antenna diversity [10],
for example, maximal ... certain mul-
tipath diversity in frequency-selective fading channels [9],
we focus on antenna diversity in this paper. In addition,
the SER performance for clipping...
Báo cáo hóa học: "Research Article Diversity Characterization of Optimized Two-Antenna Systems for UMTS Handsets" pot
... band.
Moreover, the measured S
21
always remains below −18 dB in
the whole UMTS band. All these values seem to be very sat-
isfactory for diversity purposes.
3. COMPARISON OF THE DIVERSITY PERFORMANCE
3.1. ... antennas operating in a uniform multipath environ-
ment, low correlation is not very difficult to achieve.
3.4. Apparent diversity gain and actual diversity gain
The concept of...
Báo cáo hóa học: "Research Article Metamodeling Techniques Applied to the Design of Reconfigurable Control Applications" doc
... Luca Ferrarini et al. 3
platform-independent specification of a software system,
platform specification, and transformation from platform-
independent models to a platform specific models. It in-
cludes ... ask for high customization and precise
configurations.
Target platforms for control applications are nonhomo-
geneous and their management is extremely demanding,
rapidly becoming a nightm...
Báo cáo hóa học: " Research Article Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive Antennas" pot
... there exists explicit formula for the
distribution of the minimum eigenvalue of a Wishart matrix,
we could not find nonasymptotic formula for the maximum
eigenvalue. Therefore, we calculate the ... been looking for methods to exploit spatial diversity
using the antennas of different users in the network [5–
24]. Many cooperative strategies are proposed, for example,
amplify-and-forwar...
Báo cáo hóa học: " Research Article Resource Allocation for Overlapping MBS Zones" potx
... graph.
Therefore, the resource allocation for these topologies is
identical. In other words, the resource allocation in overlap-
ping MBS Zones is to deal with the coloring problem for
Nonisomorphic ... reestablishing an MBS connection [1].
For MBS Zone containing multiple BSs, it can be operated
in either macro -diversity or non-macro -diversity operating
mode. In macro -diversity o...
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