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Traditional 2-coil inductive link, for battery-less medical implantable devices, could hardly be used for the simultaneous wireless power and data transmission when the coupling is ultra-weak, since the strong power carrier could overwhelm the uplink signal and saturate the receiver. We thus proposed a 3-coil inductive link to transmit power and downlink data, as well as uplink data from the in-body...
WIA-PA (Wireless Networks for Industrial Automation-Process Automation) standard has become one of the three major IEC (International Electrotechnical Commission) standards for industrial wireless networks technology, and multi-channel frequency hopping mechanism is significant for the performance of WIA-PA networks. Existing AFH (adaptive frequency hopping) mechanism for WIA-PA networks is based...
Stroke patients usually have difficulties to conduct rehabilitation training themselves, due to no rehabilitation evaluation in time and dependence on doctors. In order to solve this problem, this paper proposes a motion rehabilitation and evaluation system based on the Kinect gesture measuring technology combining VR technology as well as traditional method of stroke rehabilitation. Real-time rehabilitation...
We investigate a coordinated scheduling problem in a two-cell network where in each cell, two users are scheduled for simultaneous communication. Zero-forcing (ZF) beamforming is employed at each base station to suppress both intra- and inter-cell interference. The coordinated scheduling/beamforming problem is formulated as finding proper scheduling decisions and hence beamformers across the network...
Space based information system security risk evaluation is the important content of the protection of it. Basic on the analysis of the system's structure and those attack it faced, This paper improved the attack tree model, then a new quantitative risk evaluation method was studied here. While the risk evaluation steps was given, the risk value of the leaf node was quantified by the use of the multi-attribute...
We present the first implementation of a distributed beam-forming algorithm for interference mitigation on an SDR baseband processor. Co-channel interference (CCI) is becoming a major source of impairments in wireless communications and distributed beamforming is a promising technique to mitigate its negative impact. However, such schemes are challenging to implement in practical scenarios due to...
Electrocardiogram (ECG) signal's noise reduction is critical for ECG automatic diagnosis and analysis, and the de-noising result directly affects the accuracy of ECG parameter extraction even the patients' illness diagnosis and analysis. ECG signals are often seriously distorted by noises with the characteristics of low signal-noise ratio and non-stationary stochastic property, especially for P wave...
Waveforms and parameters in each segment of ECG signals reflect the activity state of the heart. The purpose of analyzing ECG signal is parameter extraction and waveform recognition, but power interference and base line drift seriously affect the accuracy of detecting ECG signal QRS waveform. On the basis of building an adaptive noise cancellation system for suppressing power interference and base...
Due to the low-rate radios used and the effects of wireless interferences in workshop and warehouse's foul environment, traditional workshop and warehouse informatization system has many defaults, such as, manual business process management, information flowing delay after material flowing, high mistakes ratio, stacking and crane job schedule in a state of chaos, very much production waste, and hard...
The world is approaching a crisis: unprecedented population aging, rising chronic disease, and escalating health care cost. This calls for a new health care paradigm that embraces the wireless technologies. However, the integration of wireless technologies, such as IEEE 802.15.4 based ZigBee and IEEE 802.11b based Wireless Local Area Network (WLAN) in the wearable health monitoring system is aggravated...
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