-
We consider the problem of target localization by a
network of passive sensors. When an unknown target emits an
acoustic or a radio signal, its position can be localized with multiple
sensors using the time difference of arrival (TDOA) information.
In this paper, we consider the maximum likelihood formulation
of this target localization problem and provide EFFICIENT convex
relaxations for this nonconvex optimization problem.We also propose
a formulation for robust target localization in the presence of
sensor location errors. Two Cramer-Rao bounds are derived corresponding
to situations with and without sensor node location errors.
Simulation results confirm the efficiency and superior performance
of the convex relaxation approach as compared to the
existing least squares based approach when large sensor node location
errors are present.
標簽：
傳感器網絡
上傳時間：
2016-11-27
上傳用戶：xxmluo
-
Libsvm is a simple, easy-to-use, and EFFICIENT software for SVM
classification and regression. It solves C-SVM classification, nu-SVM
classification, one-class-SVM, epsilon-SVM regression, and nu-SVM
regression. It also provides an automatic model selection tool for
C-SVM classification.
標簽：
LibSVM
上傳時間：
2019-06-09
上傳用戶：lyaiqing
-
The understanding of electrical system design has become increas-
ingly important, not only to the electrical designer, but to safety, plant
and project engineers as well. With the advent of high energy costs, plant
and project engineers have needed to become more aware of electrical
systems. Both safety and energy efficiency will be covered in this text
along with practical application problems for industrial and commercial
electrical design.
標簽：
Electrical
EFFICIENT
Handbook
Systems
Design
上傳時間：
2020-05-25
上傳用戶：shancjb
-
The contemporary view of the Smart City is very much static and infrastructure-
centric, focusing on installation and subsequent management of Edge devices and
analytics of data provided by these devices. While this still allows a more EFFICIENT
management of the city’s infrastructure, optimizations and savings in different do-
mains, the existing architectures are currently designed as single-purpose, vertically
siloed solutions. This hinders active involvement of a variety of stakeholders (e.g.,
citizens and businesses) who naturally form part of the city’s ecosystem and have an
inherent interest in jointly coordinating and influencing city-level activities.
標簽：
Internet
Systems
Cities
People
Things
Smart
The
and
of
上傳時間：
2020-05-26
上傳用戶：shancjb
-
From the transition of analog to digital communication along with seamless mobility and
high computing power of small handheld devices, the wireless communications industry has
seen tremendous changes leading to the integration of several telecommunication networks,
devices and services over last 30 years. The rate of this progress and growth has increased
particularly in the past decade because people no longer use their devices and networks for
voice only, but demand bundle contents such as data download/streaming, HDTV, HD video ,
3D video conferencing with higher efficiency, seamless connectivity, intelligence, reliability
and better user experience. Although the challenges facing service providers and
telecommunication companies differ by product, region, market size, and their areas of
concentration but time to market, EFFICIENT utilization of their assets and revenue expansion,
have impacted significantly how to manage and conduct their business while maintaining
sufficient margin.
標簽：
Convergence
Networks
Beyond
4G
of
上傳時間：
2020-05-26
上傳用戶：shancjb
-
Traditional modulation methods adopted by space agencies for transmit-
ting telecommand and telemetry data have incorporated subcarriers as a sim-
ple means of separating different data types as well ensuring no overlap
between the radio frequency (RF) carrier and the modulated data’s frequency
spectra.
標簽：
Bandwidth-EFFICIENT
Modulation
Digital
上傳時間：
2020-05-26
上傳用戶：shancjb
-
The book you’re holding, physically or electronically, is the result of a very
interesting, challenging but also rewarding research project. The research was
carried out in different contexts and cooperations but it was centered around the
following question: how can we make the RF transmitters of our modern com-
munication systems (WiFi, GSM, LTE, and so on) more flexible and more EFFICIENT
at the same time.
標簽：
Continuous-Time
Front-Ends
Digital
上傳時間：
2020-05-27
上傳用戶：shancjb
-
Engineers are professional inventors, researchers, and developers. Education imbues each engineer
with discipline-specific knowledge. Combining the different disciplines allows engineers to solve
more complex problems.
標簽：
Energy-EFFICIENT
Communication
Processors
上傳時間：
2020-05-27
上傳用戶：shancjb
-
Providing QoS while optimizing the LTE network in a cost EFFICIENT manner is
very challenging. Thus, radio scheduling is one of the most important functions
in mobile broadband networks. The design of a mobile network radio scheduler
holds several objectives that need to be satisfied, for example: the scheduler needs
to maximize the radio performance by EFFICIENTly distributing the limited radio re-
sources, since the operator’s revenue depends on it.
標簽：
Communications
Future
Mobile
LTE
上傳時間：
2020-05-27
上傳用戶：shancjb
-
Thisbookfocusesontheemergingresearchtopic‘green(energy-EFFICIENT)wirelessnetworks’
that has drawn huge attention recently from both academia and industry. This topic is highly
motivated due to important environmental, financial and quality-of-experience (QoE) consid-
erations.Duetosuchconcerns,varioussolutionshavebeenproposedtoenableEFFICIENTenergy
usage in wireless networks, and these approaches are referred to as green wireless communi-
cations and networking. The term ‘green’ emphasizes the environmental dimension of the
proposed solutions. Hence, it is not sufficient to present a cost-effective solution unless it is
eco-friendly.
標簽：
Green_Heterogeneous_Wireless_Netw
orks
上傳時間：
2020-05-27
上傳用戶：shancjb
