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Radio Propagation
• Large scale fades
– Attenuation: in free space, power degrades by 1/d2
– Shadows: signals blocked by obstructing structures
• Small scale fades
– Multipath effects:
» Rapid changes in signal strength over
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基于LANDMARC的定位系统上进行的算法复杂度的减小的优化，包括了具体的优化后系统的实现，误差前后对比，改文章还提出了一种adaptive的定位算法，更利于外部变化环境下-In wireless networks, a client’s locations can be estimated using signal strength received from signal transmitters. Static
fingerprint-based techniques are comm
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This is an implementation with the purpose to minimize the power consumption on wireless networks by reducing the Strength of the signal if possible. The algorithms is based on feedback reports of the received signal strength indicator.
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一种新的基于链路质量指标或接收信号强度获取
节点相对位置的实用型高适应性定位算法，降低了无线传感网络节点定位对硬件的要求-A new index based on link quality or received signal strength for the relative position of nodes practical high adaptability positioning algorithm, reducing the wireless sensor network no
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Represents the neighboring cell information, including Received Signal Strength and Cell ID location.
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ThESE FILES introduces a real-time localization system
(RTLS) using efficient multiple propagation models to compensate
for the drawback of the received signal strength technique.
The RTLS is implemented on an active RFID system and uses
rece
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Primary user emulation (PUE) attacks on cognitive radio networks pose a serious threat to the deployment of this
technique. Previous approaches usually depend on individual or combined received signal strength (RSS) measurements
to detect emulato
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基于RSSI的距离测量 matlab
将接收信号强度RSSI转化为距离，发射信号经衰减到达接收端,根据接收信号的强弱计算T-R距离-RSSI-based distance measuring the received signal strength RSSI matlab converted into distance, attenuated transmitted signal arrive at the receiver end, according to the strength of
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Wifi received signal strength data (RSS,x-y cordinates) which can be used in a MATLAB post processing positioning algorithm
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Localization issue is a crucial part of Wireless Sensor Networks (WSNs) including Underwater WSNs (UWSNs). Unlike in Terrestrial WSNs where the localization techniques are well established, localization for UWSNs is still at the infancy stage. Most o
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Awareness of the physical location for each node
is required by many wireless sensor network applications. The
discovery of the position can be realized utilizing range measurements
including received signal strength, time of arrival, time
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一个室内定位的系统。基于接受信号强度。可以检测出到WiFi接入点的大概距离。-A indoor localization platform to locate WiFi access points and estimate the distance based on the received signal strength.
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三维基于VLC和接收信号强度的三维室内定位代码-Based on three-dimensional three-dimensional indoor positioning VLC code and a received signal strength
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本系统为立体声调频收音机，设计采用RDA5807收音模块，与单片机相结合，使收音解调电路设计变的简单，实现FM收音并显示频率。我们通过矩阵键盘设定我们需要的频段，并设置音量大小，通过诺基亚5110液晶屏显示出来，并根据所显示接收信号的强度等级，判断收音所在地的信号强度。RDA5807模块具有65-108MHz全球FM接收频段相容的效果，具备噪声消除、软静音、低音增强、灵敏度高、噪声小、抗干扰能力强等功能，所以使用本模块很容易实现，且系统可靠稳定。-This system is design
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This particle filter program.
It is used Monte Carlo techniques for mobility tracking in
wireless communication networks by means of received signal strength indications.-This is particle filter program.
It is used Monte Carlo techniques for mo
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接收的信号强度指示，无线发送层的可选部分，用来判定链接质量，以及是否增大广播发送强度,通过强度来估算出距离(The received signal strength indicator, the optional part of the wireless transmission layer, is used to determine the link quality and whether the broadcast transmission strength is increased and
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基于RSSI的室内定位建模 室内定位 接收的信号强度指示(model based on RSSI indoor location
Received Signal Strength Indication)
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人脉搏跳动的时候，血液的透光性不一样会导致接收器那边接收的信号强弱不一样，因此可以把变化的信号滤波、放大、整形等系列处理后 ，单片机利用外部中断对其进行计数，最终换算成人一分钟脉搏的跳动次数显示在液晶屏上。(When people beat the light transmittance of the blood is not the same there will lead to receiver the received signal strength is not the same, so
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异构网络切换，根据移动终端在LTE和WIMAX内的接收信号强度，实现垂直切换(According to the received signal strength of the mobile terminal, the handover between the LTE and WiMAX)
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基于测距技术的定位算法包括基于接收信号强度（RSSI，Received Signal Strength Indication）、基于到达时间（TOA，Time of Arrival）、基于到达时间差（TDOA，Time Difference of Arrival）以及基于到达角度（AOA，Angle of Arrival）测距方法。通过以上几种算法获取了三个相邻节点间距离后，再利用三边测量法、三角测量法或极大似然估计法计算出未知节点的位置。
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