Báo cáo hóa học: " Energy-Efficient Channel Estimation in MIMO Systems" pot
Báo cáo hóa học: " Energy-Efficient Channel Estimation in MIMO Systems" pot
... different channel estimation schemes obtained by varying
the number of active transmit/receive antennas under a fixed
delay and error constraint.
2. CHANNEL ESTIMATION IN MIMO FLAT-FADING
ENVIRONMENTS ... electrical and computer engineering in
1988, and the Ph.D. degree in electrical and computer engineering
in 1991, both from Northeastern University, Boston, Mass. In 1992,...
báo cáo hóa học:" Editorial Enhancing Privacy Protection in Multimedia Systems" potx
... computations in the encrypted
domain, and a packing approach to group a number of pixels
together in a single encrypted word for faster computation.
Detailed bounds on accuracy and packing efficiency ... membership of an incomer
but is oblivious to which entry the incomer’s biometric
matches. The authors describe an interactive protocol for
iris matching in the encrypted domain. They also...
Báo cáo hóa học: " FIXED POINTS AND CONTROLLABILITY IN DELAY SYSTEMS" potx
... center of much interest for a long
time in connection with a problem of reactor dynamics (Levin and Nohel [11]). The
Liapunov function here, having its root in the work of Levin [10], continues to ... T is invertible.
By Cramer’s rule, we write k
j
in (3.13)ask
j
=
j
(a)/ where
j
(a)isthen × n
determinant obtained by replacing the jth column of
by a = (a
1
,a
2
, ,a
n
)
T
defined...
Báo cáo hóa học: " Research Article Channel Estimation for Two-Way Relay OFDM Networks" pot
... Communications and Networking 5
0 5 10 15 20 25 30
10
0
10
−1
10
−2
10
−3
10
−4
10
−5
SNR (dB)
MSE
Randon training
Orthogonal training
Orthogonal optimal training
Zadoff-Chu optimal training
Figure 1: MSE ... 25 30
10
0
10
−1
10
−2
10
−3
SNR (dB)
SER
Exact channel
Randon training
Orthogonal training
Orthogonal optimal training
Zadoff-Chu optimal training
14.5 15 15.5
10
−1.3
10
−1.2
Figure 2:...
Báo cáo hóa học: " Doubly Selective Channel Estimation Using Superimposed Training and Exponential Bases Models" pdf
... 3 in Section 4). In semi-blind
approaches (such as that in [5]), there is periodically inserted
time-multiplexed training but one uses the nontraining-
based data also to improve the training-based ... eng ineering from Ts-
inghua University, Beijing, China, in 2000
and 2003, respectively. He is currently
working towards his Ph.D. degree in electri-
cal engineering at Auburn Univers...
Báo cáo hóa học: " Impact of Channel Estimation Errors on Multiuser Detection via the Replica Method" pot
... University, Beijing, China, in 1998
and 2000, respectively, and the Ph.D. de-
grees in electrical engineering from Prince-
ton University, Princeton, NJ, in 2005. In
2005, he joined Qualcomm, San ... performance loss incurred
by the fluctuations of received power in the fading channels
and consider only the impact of channel estimation error.
2.2. Channel estimation error
In...
Báo cáo hóa học: " Efficient Channel Shortening Equalizer Design" ppt
... 2003 and in re vised form 9 June 2003
Time-domain equalization is crucial in reducing channel state dimension in maximum likelihood sequence estimation and inter-
carrier and intersymbol interference ... K. Martin obtained dual B.S. de-
grees in physics and electrical engineering
from the University of Maryland, College
Park in 1999 (Summa Cum Laude) and an
M.S. in electrical...
Báo cáo hóa học: " EM-Based Channel Estimation Algorithms for OFDM " docx
... contin-
uous phase modulated signals in fading channels. In the re-
mainder of this section, we propose three different EM-based
channel estimation and signal detection algorithms by defin-
ing ... the method with MMSE in the frequency
domain [8] and linear interpolation (LI) in the time do-
main [7] (MMSE + LI) as an example, since MMSE esti-
mation in the frequency domain demons...
Báo cáo hóa học: " Research Article Channel Asymmetry in Cellular OFDMA-TDD Networks" docx
... γ
2
≥···≥γ
N
c
.
In other words, while maintaining a given sum rate,
minimum total power is used if the subcarriers are ordered
according to their link gains (best link gain first) and the
SINR targets ... assigned, such that the same
throughput is maintained; however, it is interesting to
obtain an assignment which minimizes the total power. The
problem of minimizing the total power for a g...
Báo cáo hóa học: " Research Article Frequency Estimation in Iterative Interference Cancellation Applied to Multibeam Satellite Systems" pptx
... keep
large estimation windows to perform estimation in (7): us-
ing the whole burst allows obtaining the minimum degra-
dation. Clearly, this approach requires “accurate” single-user
frequency estimations, ... 3
y
K
[n]
Initial phase
recovery
Decoding
Estimation
of g
K,.
Interference
cancellation
d
(m)
k
[n]
To b eam l,fork
interfering on beam l
y
k
[n]
Initial phase
recovery
y
(m)...
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