... Ting
1
, Yang Han
1
and Ashish Pandharipande
2
Abstract
It is not economically viable to allocate a dedicated spectrum band to wireless sensor networks (WSNs). Moreover,
sharing a spectrum band wi ... et al.: An orthogonal spectrum sharing
scheme for wireless sensor networks. EURASIP Journal on Wireless
Communications and Networking 2011 2011:10.
Submit your manusc...
... least partial channel information
of present channel estimation algorithms for two-way relay
channels. Both exploit the nature of reciprocal channels and
both consider OFDM transmission strategies, ... exploiting
the broadcast nature of wireless radio waveform so that
the overall system performance including power efficiency
and communication reliability can be significantly improved.
Howeve...
... performance gain compared to a uniform power allocation scheme.
1. Introduction
Wireless sensor networking is an emerging technology which
finds application in many fields including environment
and ... monitoring and surveillance,
and underwater wireless sensor networks (UWSNs) for
marine environment monitoring [1, 2]. A wireless sensor
network (WSN) consists of spatially dist...
... Calif, USA, September 2003.
[8] F. Zhao and L. Guibas, Wireless Sensor Networks: An Informa-
tion Processing Approach, chapter 2, Morgan Kaufmann, San
Francisco, Calif, USA, 2004.
[9] K. Passino, ... from
x(k) and are within an angle θ
− φ and θ + φ as shown
in Figure 2. Note that the parameters ρ and φ can be used
to also model the maneuverability constraints of the mobile
platform....
... Ultra-Wideband (UWB) sensor
networks is an important area that attracts significant
research interest. It is required in many sensor network
applications, such as indoor navigation and surveillance,
detection ... figure, we can
see that the HT and HC methods provide better performance
than other methods. The HC method, a combination of
the HT and the CT method, can further improve the
per...
... convergence cannot be guaranteed for all
values of 0 <ε<1and0<μ<1. We refer to Appendix C
for further analysis on this point. Here, we illustrate this is-
sue by means of an example. ... and μ
that guarantee the condition
|
λ(λ, μ)| < 1foranyλ in (C.4)
(except λ
= 1).However,anumericalstudycanbeeasilycar-
ried out from (C.3)and(C.4). For illustration, consider an
un...
... Rome,
Italy, July 2001.
[8] M. Zorzi and R. R. Rao, “Geographic random forwarding
(GeRaF) for ad hoc and sensor networks: multihop perfor-
mance,” IEEE Transactions on Mobile Computing, vol. ... under the sensor networks cir-
cumstances in [12], and gave the mean and variance of mul-
tihop distance for 1D Poisson point distribution. They also
proposed to approximate the multihop dista...
... Professor Alex Grant. He received a 1997 Career
Award, and a Canada Research Chair in 2001. He is an Associate
Editor for coding theory and techniques for IEEE Transactions on
Communications, and a Guest ... dis-
tances at various frequencies and environments. Path loss
exponents range from n
= 2 for free space to n = 4for
office space with many obstacles and ranging over multiple
floor...
... ongoing effort to develop an analytical framework
for interference modeling and performance evaluation in
the unlicensed band, as it is seen as an invaluable tool for
dynamic spectrum access system ... bandwidth, and limited transmission
range [8]. In an interference rich scenario such as ISM
band, beamforming is expected to play an important role.
Beamforming uses arrays of ante...
... approach was planned and executed i n
five cases and an ilioinguinal approach in one case. In
one case a combined Stoppa and posterior approach
was planned and executed (Table 2). The planned frac-
ture ... CT
and preoperative planning showing the osteosynthesis
implants as planned (blue) and as executed (orange). Oblique
lateral view.
Fornaro et al. Journal of Orthopaedic Surgery and Resea...