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In this presentation the motor function rebuilding of paralyzed limbs of the paraplegic patients caused by spinal cord injury and the hemiplegic patients after stroke and SCI is concerned. The biomedical methods and the traditional physical methods for the rehabilitation of two kinds of paralyses are reviewed. The core part is to discuss the neural and muscular signal regeneration and the limb function...
In wireless body sensor networks (WBSN) and wireless body area networks (WBAN), sensor nodes have different bandwidth requirements, therefore, heterogeneous traffic is created. In this paper, we propose a statistical medium access control (MAC) protocol with periodic synchronization for use in heterogeneous traffic networks based on human body communication (HBC). The MAC protocol is designated to...
The design and analysis of routing algorithm is an important issue in Wireless Sensor Networks (WSNs). Most traditional geographical routing algorithms cannot achieve good performance in duty-cycled networks. In this paper, we propose a k-connected overlapping clustering approach with energy awareness, namely k-OCHE, for routing in WSNs. The basic idea of this approach is to select a cluster head...
This article mainly from the start of the radio signal propagation characteristics, and connecting with the reality, according to the actual situation of some aera, the three typical environment of the topography for signal channel test and modeling is choosen. Through to the research of the zone VHF/UHF band, and a positive approach of the channel test and modeling are got.
With the proliferation of location based services (LBS), various indoor positioning techniques have been explored based on received signal strength (RSS). To improve performance, many hybrid or fusion approaches have been proposed in the literature. In this paper, a new fusion approach is proposed to achieve better positioning performance, with a focus on the optimal utilization of RSS measurements...
Trend of accelerated aging society increases need of care for the aged at home. To fit this need, we designed the continuous body posture monitoring system based on wireless sensor networks. The hardware platform is made up of anchor nodes, the central control node and wireless sensor nodes which include the three axis low-g accelerometer MMA7260, 2-axis magnetic sensor HMC5883L and CC2431 System-on-Chip...
This paper introduces the characteristics of the wireless network, including self-organizing, dynamic topology, wireless communications and so on, which make the network nodes have limited energy, the same as processing power, storage capacity and communication capabilities, therefore, the efficient use of energy, maximizing its network cycle is the wireless sensor network's core issue. Network coding...
Congestion has always been a serious problem for all kinds of communication networks. Wireless sensor networks (WSN) face special difficulties in dealing with congestion due to their unique requirements and constraints. Various congestion control schemes for WSN have been proposed recently. These schemes try to solve the problem either at the MAC layer or through a cross-layer approach. This paper...
A novel wireless powering solution for active capsule endoscope has been presented in this paper. The self-resonant coil inside the human body is used to receive energy, and the energy is rectified and regulated to generate a stable voltage for charging a button battery, which provides stable power for controlling and driving the system by the low dropout (LDO) regulator fixed in the capsule endoscope...
Node localization plays a key role in the validity of WSN applications. To improve the precision of WSN node localization, A localization algorithm is studied which is based on Maximum Likelihood Estimation (MLE). A new RSSI ranging model is proposed that is depicted by two empirical models. The optimal number of reference WSN nodes for localization are studied. The test results show that the error...
This paper focuses on studying the impacts of a duty-cycle based CKN sleep scheduling algorithm for our previous designed TPGF geographical multipath routing algorithm in wireless sensor networks (WSNs). It reveals the fact that waking up more sensor nodes cannot always help to improve the exploration results of TPGF in a duty-cycle based WSN. Furthermore, this study provides the meaningful direction...
This paper proposes a novel wireless power supply solution, and designs a power management system-on-chip (SOC) for active capsule endoscope. The SOC consists of a high-efficiency rectifier, two excellent performances low-dropout regulator (LDO) and a rapid battery charger management unit. The self-resonant coil inside the human body is used to receive energy, and the energy is rectified and regulated...
This paper introduces an intelligent remote monitor system based on ZigBee sensor networks for IDC (Internet Data Center) room. The system consists of two parts: three types of ZigBee modules and the server module. The three types of ZigBee modules contain first-cluster node, second-cluster node and sensor end-node. The system can control remote IDC room based on the connection of the ZigBee protocols...
Notice of Violation of IEEE Publication Principles"Precoder Division Multiplexing Access for Cognitive Radio"by Lei Wang, Baoyu Zheng, Jingwu Cui, Xiaorong Xuin the Proceedings of the International Conference on Wireless Communications&Signal Processing, 2009. WCSP 2009 , November 2009After careful and considered review of the content and authorship of this paper by a duly constituted...
Based on free probability theory, a new scheme for frequency band sensing of spreading communication system is proposed. Unlike previous studies in the field, the new scheme does not require the knowledge of the spreading sequences of users and is related to the asymptotic free behavior of random matrices. Simulation result shows that the convergence characteristic holds true even for a small number...
This paper reports a low power transceiver designed for wearable medical healthcare system. Based on a novel energy-efficient wideband wireless communication scheme that uses human body as a transmission medium, the transceiver can achieve a maximum 15 Mbps data rate with total receiver sensitivity of -30 dBm. The chip measures only 0.56 mm2 and was fabricated in the SMIC 0.18 um 1P6M RF CMOS process...
In this paper, a new cooperative scheme for signal detection is proposed. Unlike previous works in the field, the new scheme does not require the knowledge of the noise statistics and is related to the behavior of the largest and smallest eigenvalue of channel matrices. Simulations show that the new algorithm is effective, outperforming classical energy detected techniques.
Key technology for physical layer (PHY) of worldwide interoperability for microwave access (WiMAX) which conforms to IEEE802.16e standard contains generalized multi-carrier (GMC), adaptive modulation and coding (AMC), etc. This paper firstly introduces orthogonal frequency division multiplexing (OFDM) in the application of WMAN in the broadband wireless access (BWA) protocol IEEE 802.16e, then we...
We propose an external actuation technique for wireless micro-robot in pipeline. In this technique, the external magnetic field is used to rotate the micro-robot by applying a force on the magnet which is enclosed in the robot. With the help of the spiral structure on the outer surface of the robot, the rotation of robot can be converted to axial motion through liquid such as water or oil of the pipeline...
Communication between wireless devices ought to be as simple as possible; they should be able to seamlessly switch between different radios and network stacks on the fly in order to better serve the user. To make this a possibility, we consider the challenging problem of predicting link quality in a changing mobile environment. In this paper we present an algorithm that uses Weighted Least Squares...
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