Báo cáo hóa học: " Research Article Channel Sensing without Quiet Period for Cognitive Radio Systems: A Pilot Cancellation Approach" ppt
Báo cáo hóa học: " Research Article Channel Sensing without Quiet Period for Cognitive Radio Systems: A Pilot Cancellation Approach" ppt
... source and/or
channel coding block. Thus, the channel measurement
reporting for channel adaptation mechanism (e.g., the power
control and the adaptive modulation and coding) is usually
carried ... out frame-by-frame basis. If the channel condition
changes largely during a frame, the channel estimation is
likely to be inaccurate, and the system performance can
be severely degrade...
Báo cáo hóa học: " Research Article Evaluating IEEE 802.15.4 for Cyber-Physical Systems" potx
... it shall compute a backoff delay based on a
random number of backoff period and performs CCA (clear
channel assessment) before accessing to the channel. If the
channel is busy, both NB and BE are ... 136–139,
Lausanne, Switzerland, July 2009.
[27] A. Mehta, G. Bhatti, Z. Sahinoglu, R. Viswanathan, and
J. Zhang, “Performance analysis of beacon-enabled IEEE
802.15.4 MAC for emergenc...
Báo cáo hóa học: " Research Article Enumerative Encoding of TMTR Codes for Optical Recording Channel" pot
... optical recording system for simulation.
An 8-state transition diagram, as depicted in Figure 7 (a) ,
can describe the EPRII optical channel. During simulation,
a Gaussian optical recording channel ... [2–9],
whichcanbetreatedasa(0,k) modulation code, has recently
been studied for partial response channels. The TMTR code
matched to the partial response channel can delete some
domin...
Báo cáo hóa học: " Research Article Channel Resource Allocation for VoIP Applications in Collaborative IEEE 802.11/802.16 Networks" ppt
... physical and MAC overheads are fixed for each frame
and the transmission rate variation has no impact on these
overheads. The VoIP frame payload which is small has little
impact on the total transmission ... used for
performance analysis in WLANs. In particular, time is slotted
and each state represents a station or AC in a particular
time period. At each state, a transition is trig...
Báo cáo hóa học: " Research Article Joint Sensing Period and Transmission Time Optimization for Energy-Constrained Cognitive Radios" doc
... Germany,
2009.
[5] X. Kang, Y C. Liang, A. Nallanathan, H. K. Garg, and
R. Zhang, “Optimal power allocation for fading channels
in cognitive radio networks: ergodic capacity and outage
capacity,” ... much larger than π
NSA
, especially when the channel s
state switches slowly (namely, μ and λ are small), and is
always larger than π
PA
, especially when the channel s state
switches fa...
Báo cáo hóa học: " Research Article The Optimal Convex Combination Bounds for Seiffert’s Mean" doc
... −
1
π
H
a, b
,
2.24
for all a, b > 0witha
/
b.
2 Journal of Inequalities and Applications
Let C a, b a
2
b
2
/ a b ,A a, b a b/2,G a, b
√
ab,andH a, b2ab/ a b be
the contraharmonic, ... Inequalities
and Applications, vol. 2006, Article ID 46782, 25 pages, 2006.
21 T. Hara, M. Uchiyama, and S E. Ta kahasi, “ A refinement of various mean inequalities,” Journa...
Báo cáo hóa học: " Research Article QoS-Aware Active Queue Management for Multimedia Services over the Internet" potx
... transmission gap, termed Rate-Based. The Rate-based
is more suitable for delivering real-time trafficbecauseit
can provide a more smooth transmission rate and it has no
need to wait for an ACK message from ... results are shown in Figure 7(b) for an
arrival rate between 0.08 (flows/sec) and 0.1 (flows/sec). The
reason is the same as varying the CBR arrival rate case that
a ects frame var...
Báo cáo hóa học: " Research Article Non-Constant Positive Steady States for a Predator-Prey Cross-Diffusion Model with Beddington-DeAngelis Functional Response" pot
... the CIMA reaction,”
Transactions of the American Mathematical Society, vol. 357, no. 10, pp. 3953–3969, 2005.
29 P. Pang and M. Wang, “Qualitative analysis of a ratio-dependent predator-prey ... Venturino, Spatiotemporal Patterns in Ecology and Epidemiology,
Chapman and Hall/CRC Press, Boca Raton, Fla, USA, 2008.
2 R. S. Cantrell and C. Cosner, Spatial Ecology via Reaction-Diffusion Equa...
Báo cáo hóa học: " Research Article Efficient Dispersion Generation Structures for Spring Reverb Emulation" ppt
... fractional delay is necessary for precise time alignment
of the two bands. A good fit for this purpose is a standard all-
pass interpolated fractional delay line. However, in contrast
to usual applications ... where a specific fractional delay time
at DC is required, we need to match a particular fractional
delay at an arbitrary frequency. The equation specifying the
group-delay of...
Báo cáo hóa học: " Research Article Some Shannon-McMillan Approximation Theorems for Markov Chain Field on the Generalized Bethe Tree" docx
... the arbitrary
measure and Markov measure on the generalized Bethe tree. As corollaries, a class of
Shannon-McMillan theorems for arbitrary random fields and the Markov chains field on the
generalized ... pages
doi:10.1155/2011/470910
Research Article
Some Shannon-McMillan Approximation
Theorems for Markov Chain Field on the
Generalized Bethe Tree
Kangkang Wang
1
and Decai Zong
2
1
Sch...
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