Description: run these simulations of wireless sensor networks written in matab.event model,event simulations. Platform: |
Size: 149504 |
Author:suresh |
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Description: programs for the book Practical Wireless Communication Simulations with C-programs for the book Practical Wireless Communication Simulations with C++ Platform: |
Size: 5616640 |
Author:Kwan LO |
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Description: CC1110开发使用工具，成都无线龙数据监控软件（包括模拟液晶，模拟数码管，光敏/温度数据显示，游戏模拟等)。使用户在PC机上实时观察系统需要显示的数据。-CC1110 development tools, Chengdu Wireless Long data monitoring software (including analog LCD, analog digital tube, photosensitive/temperature data shows, games, simulations, etc.). So that the user PC, real-time observation systems need to display data. Platform: |
Size: 308224 |
Author:王亮 |
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Description: OMNeT++ is an extensible, modular, component-based C++ simulation library and framework, with an Eclipse-based IDE and a graphical runtime environment. Domain-specific functionality (support for simulation of communication networks, queuing networks, performance evaluation, etc.) is provided by model frameworks, developed as independent projects. There are extensions for real-time simulation, network emulation, alternative programming languages (Java, C#), database integration, SystemC integration, and several other functions. Platform: |
Size: 313344 |
Author:Ahmed |
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Description: 通过单一的Wi-Fi接入点的信号强度来判断移动物体的位置。比较新的一篇文章。用了蒙特卡罗抽样的办法－Monte Carlo Sampling Method－来估计位置。-This paper describes research towards a system
for locating wireless nodes in a home environment requiring
merely a single access point. The only sensor reading used for
the location estimation is the received signal strength indication
(RSSI) as given by an RF interface, e.g.,Wi-Fi.Wireless
signal strengthmaps for the positioning filter are obtained by
a two-step parametric and measurement driven ray-tracing
approach to account for absorption and reflection characteristics
of various obstacles. Location estimates are then
computed using Bayesian filtering on sample sets derived
by Monte Carlo sampling. We outline the research leading
to the system and provide location performance metrics using
trace-driven simulations and real-life experiments. Our
results and real-life walk-troughs indicate that RSSI readings
from a single access point in an indoor environment
are sufficient to derive good location estimates of users with
sub-room precision. Platform: |
Size: 452608 |
Author:weihuagao |
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Description: INTER-CARRIER INTERFERENCE CANCELLATION FOR OFDM SYSTEMS:
Orthogonal Frequency Division Multiplexing (OFDM) is an emerging multi-carrier modulation scheme, which has been adopted for several wireless standards such as IEEE 802.11a and HiperLAN2. A well-known problem of OFDM is its sensitivity to frequency offset between the transmitted and received carrier frequencies. This frequency offset introduces inter-carrier interference (ICI) in the OFDM symbol. This project investigates three methods for combating the effects of ICI: ICI self-cancellation (SC), maximum likelihood (ML) estimation, and extended Kalman filter (EKF) method. These three methods are compared in terms of bit error rate performance, bandwidth efficiency, and computational complexity. Through simulations, it is shown that the three techniques are effective in mitigating the effects of ICI. For high values of the frequency offset and for higher order modulation schemes, the ML and EKF methods perform better than the SC method. Platform: |
Size: 390144 |
Author:redami |
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Description: A sample wireless sensor network simulation module developed using matlab. It is very useful for wireless network simulations. It is like NS2 , Glomosim , QualNet , OpNet. Platform: |
Size: 22528 |
Author:mysteriousbangalor |
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Description:
Wireless Communication and CDMA
This section provides some background information on wireless technology, wireless personal communications, and the basics of CDMA technology. If you are familiar with CDMA technology and the IS-95A standard, you can skip to these later sections: Main Library Structure, which describes the components of the CDMA Reference Blockset Hints for Using the CDMA Reference Blockset, which describes some important conventions in the CDMA Reference Blockset that you should keep in mind while studying or creating simulations Demo Models, which uses demonstration models to illustrate how to use the blockset for simulating CDMA techniques. Platform: |
Size: 113664 |
Author:KidQn |
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Description: Abstract
This paper talk about the communication protocol named LEACH. The protocol focuses on reducing the power consumption of wireless sensor networks, which can have significant impact on the overall energy dissipation of these networks. LEACH uses localized
coordination to enable scalability and obustness for dynamic networks, and incorporate data fusion into the routing protocol to reduce the amount of information that must be transmitted to the base station. Simulations show that LEACH can achieve as much as a factor of 8 reductions in energy dissipation compared with conventional routing protocols. In addition, LEACH is able to distribute energy dissipation evenly throughout
the sensors, doubling the useful system lifetime for the networks we simulated. Platform: |
Size: 707584 |
Author:Amir |
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Description: Estimating the positions of sensor nodes is a fundamental and
crucial problem in ad hoc wireless sensor networks (WSNs).
In this paper, an accurate node localization method for WSNs
is devised based on the weighted least squares technique with
the use of time-of-arrival measurements. Computer simulations
are included to evaluate the performance of the proposed
approach by comparing with the classical multidimensional
scaling method and Cram´ er-Rao lower bound. Platform: |
Size: 518144 |
Author:pravin jadhav |
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Description: Power consumption is an important design criterion in
the design of wireless sensor networks. Hybrid radio
frequency/free space optical wireless sensor networks (RF/FSO
WSN) have been proposed to reduce the energy consumption of
traditional RF-based sensor networks. This paper compares the
performance of such a hybrid sensor network against the wellknown
RF-based low energy adapting clustering hierarchy
(LEACH) WSN proposed in the literature. Network performance
is studied in terms of network lifetime and average network area
coverage. Simulations show that despite not employing data
aggregation, the RF/FSO WSN has a longer lifetime and larger
average network coverage when compared to the LEACH WSN Platform: |
Size: 631808 |
Author:serag |
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Description: 本文基于MIMO检测中性能和复杂度的矛盾，结合具体的MIMO
检测技术进行深入研究，致力于提供能有效缓解性能和复杂度矛盾冲
突的技术方案。论文首先介绍MIMO系统的基本模型，随后针对球
译码(Sphere Decoding)检测及其相关技术、搜索空间预定义检测器
(Search Space Predetermined Detector，SSPD)算法、并行计算对检
测算法的加速作用以及自动重传机制(Automatic Retransmission
reQuest，ARQ)带来的时间分集对复杂度压力的缓解作用等几方面
展开研究。-As far as is known，few literature deals with the quantified
relationship between complexity and detection performance of SD．
Sphere radius is proposed to be a transition parameter,thus the quantified
relationship is analyzed theoretically．This part of work can be divided
into three paas：1)In order to analyze the performance of SD，the
asymptotic bound of optimal performance is utilized，and latter the
performance loss caused by search space reduction is quantified with the
help of above bound．Since the performance loss is affected by the sphere
radius directly,sphere radius Can be used to represent the performance
feature of SD．2)Based on the characteristic of complexity of SD，derive
all upper．bound of average complexity；therefore the sphere radius
becomes the metric of average complexity．3)By making use of sphere
radius，the bridge between performance and complexity can be built．The
compute simulations verify above analysis for different MIMO use cases． Platform: |
Size: 5345280 |
Author:蜡笔 |
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Description: Wireless backbone protocols in homogeneous and
heterogeneous ad hoc networks: an ns3
implementation and simulations Platform: |
Size: 391168 |
Author:Vikshant Khanna |
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Description: Non-orthogonal multiple access (NOMA) is a promising air-interface technology for its ability to support massive wireless mobile terminals. In this paper, the outage performance for
uplink NOMA systems employing the dynamic ordered successive
interference cancellation receiver is analyzed under the independent but not identically distributed (i.ni.d.) fading environment.
We theoretically reveal the general approach to derive the closedform outage probability expression for an arbitrary number of
serving users. Under the i.ni.d. fading environment, the probability
for each possible decoding order is derived respectively based on
the observation of the time-varying received power strength for
each user. Furthermore, encountering the challenge of solving the
multidimensional integration, a recursive method is proposed to
deal with the conditional outage probabilities under a certain
decoding order as a joint probability problem with the linear
constraints of the decoding order and the required data rate.
Finally, we derive the closed-form outage probability expressions.
The simulations are performed to validate the accuracy of the
theoretical results and reveal the superiority of the dynamic mode
over the fixed one. Platform: |
Size: 1434011 |
Author:dipfr@yahoo.fr |
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Description: To address the ever increasing high data rate and
connectivity requirements in the next generation 5G wireless
network, novel radio access technologies (RATs) are actively
explored to enhance the system spectral efficiency and connectivity. As a promising RAT for 5G cellular networks, nonorthogonal multiple access (NOMA) has attracted extensive
research attentions. Compared with orthogonal multiple access
(OMA) that has been widely applied in existing wireless communication systems, NOMA possesses the potential to further
improve system spectral efficiency and connectivity capability.
This paper develops analytical frameworks for NOMA downlink
and uplink multi-cell wireless systems to evaluate the system
outage probability and average achievable rate. In the downlink
NOMA system, two different NOMA group pairing schemes are
considered, based on which theoretical results on outage and
achievable data rates are derived. In the uplink NOMA, revised
back-off power control scheme is applied and outage probability
and per UE average achievable rate are derived. As wireless
networks turn into more and more densely deployed, inter-cell
interference has become a dominant capacity limiting factor but
has not been addressed in most of the existing NOMA studies.
In this paper a stochastic geometry approach is used to model a
dense wireless system that supports NOMA on both uplink and
downlink, based on which analytical results are derived either in
pseudo-closed forms or succinct closed forms and are further
validated by simulations. Numerical results demonstrate that
NOMA can bring considerable system-wide performance gain
compared to OMA on both uplink and downlink when properly
designed Platform: |
Size: 6695586 |
Author:dipfr@yahoo.fr |
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