This paper presents Sora, a fully programmable software radio platform on commodity PC architectures. Sora combines the performance and fidelity of hardware software-defined (SDR) platforms with programmability flexibility general-purpose processor (GPP) SDR platforms. uses both techniques to address challenges using architectures for high-speed SDR. The components consist front-end reception transmission, control board high-throughput, low-latency data transfer between host memories. makes...

Spatial multiple access holds the promise to boost capacity of wireless networks when an point has antennas. Due asynchronous and uncontrolled nature LANs, conventional MIMO technology does not work efficiently concurrent transmissions from stations are uncoordinated. In this paper, we present design implementation a crosslayer system, called SAM, that addresses challenges enabling spatial for devices in random network like WLAN. SAM uses chain-decoding technique reliably recover channel...

Modern communication technologies are steadily advancing the physical layer (PHY) data rate in wireless LANs, from hundreds of Mbps current 802.11n to over Gbps near future. As PHY rates increase, however, overhead media access control (MAC) progressively degrades throughput efficiency. This trend reflects a fundamental aspect MAC protocol, which allocates channel as single resource at time.

Multi-user multiple-input multiple-output (MU-MIMO) is the latest communication technology that promises to linearly increase wireless capacity by deploying more antennas on access points (APs). However, large number of MIMO will generate a huge amount digital signal samples in real time. This imposes grand challenge AP design multiplying computation and I/O requirements process samples. paper presents BigStation, scalable architecture enables realtime processing large-scale systems which...

With the increasing of physical-layer (PHY) data rate in modern wireless local area networks (WLANs) (e.g., 802.11n), overhead media access control (MAC) progressively degrades throughput efficiency. This trend reflects a fundamental aspect current MAC protocol, which allocates channel as single resource at time. paper argues that, high WLAN, should be divided into separate subchannels whose width is commensurate with PHY and typical frame size. Multiple stations can then contend for use...

To solve routing jitter problem in PROPHET delay tolerant network, advanced is proposed this paper. Average delivery predictabilities are used to avoid jitter. Furthermore, we evaluate it through simulations versus protocol. The experimental results show there has higher average rates and shorter delays PROPHET. Thus, fair say that gives better performance than

Modern communication technologies are steadily advancing the physical layer (PHY) data rate in wireless LANs, from hundreds of Mbps current 802.11n to over Gbps near future. As PHY rates increase, however, overhead media access control (MAC) progressively degrades throughput efficiency. This trend reflects a fundamental aspect MAC protocol, which allocates channel as single resource at time. paper argues that, high WLAN, should be divided into separate subchannels whose width is commensurate...

Multi-user multiple-input multiple-output (MU-MIMO) is the latest communication technology that promises to linearly increase wireless capacity by deploying more antennas on access points (APs). However, large number of MIMO will generate a huge amount digital signal samples in real time. This imposes grand challenge AP design multiplying computation and I/O requirements process samples. paper presents BigStation, scalable architecture enables realtime processing large-scale systems which...

This demonstration shows a novel virtualization architecture, called Multi-Purpose Access Point (MPAP), which can virtualize multiple heterogenous wireless standards based on software radio. The basic idea is to deploy wide-band radio front-end receive signals from all sharing the same spectrum band, and use separate base-bands demodulate information stream for each standard. Based radio, MPAP consolidates devices into single hardware platform, allows them share general-purpose computing...

To avoid random and blindfold forwarding decision in spray wait routing delay tolerant network, Binary Spray Wait based on average delivery probability is proposed this paper. Based predictability of PROPHET, used to make decision. Furthermore, we evaluate it through simulations versus protocol. The experimental results show there has slight higher rates shorter delays probability.

This demonstration shows a novel virtualization architecture, called Multi-Purpose Access Point (MPAP), which can virtualize multiple heterogenous wireless standards based on software radio. The basic idea is to deploy wide-band radio front-end receive signals from all sharing the same spectrum band, and use separate base-bands demodulate information stream for each standard. Based radio, MPAP consolidates devices into single hardware platform, allows them share general-purpose computing...

Intelligent Transport System can improve traffic safety and reduce congestion environmental pollution. Wireless communication capability is one of the most important bases intelligent transportation system. The main technologies include IEEE 802.11p based dedicated short-range technology (DSRC) cellular network LTE-V2X technology. DSRC more mature, has been deployed applied in some developed countries. This paper presents enactment history standard United States, frequency band channel...

Sora is a fully programmable, high performance software radio platform based on commodity general-purpose PC. In this demonstration, we illustrate the main features of that provide researchers flexible and powerful means to conduct wireless experiments at different levels with various goals. Specifically, demonstrator will show four useful applications for research are built platform: 1) A capture tool allows one take snapshot channel; 2) signal generation transmit arbitrary baseband...

Vehicle network is the practical application of Internet Things in field transportation, and has broad development prospects alleviating traffic congestion, reducing accidents, saving energy protecting environment. As a typical communication technology for vehicle network, standard system LTE-V2X was formulated 2007, but there no technical requirements methods testing actual urban scenario. It one issues which need to be solved that develop performance standards scenario terminal equipment....

This demonstration shows a novel virtualization architecture, called Multi-Protocol Access Point (MPAP), which exploits the software radio technology to virtualize multiple heterogenous wireless standards on single hardware. The basic idea is deploy wide-band front-end receive signals from all sharing same spectrum band, and use separate base-bands demodulate information stream for each standard. Based radio, MPAP consolidates devices into hardware platform, allowing them share common...

Sora is a fully programmable, high performance software radio platform based on commodity general-purpose PC. In this demonstration, we illustrate the main features of that provide researchers flexible and powerful means to conduct wireless experiments at different levels with various goals. Specifically, demonstrator will show four useful applications for research are built platform: 1) A capture tool allows one take snapshot channel; 2) signal generation transmit arbitrary baseband...

Optoelectronic integrated circuit (OEIC) technology has attracted considerable research attention. Studies have achieved numerous breakthroughs in the basic scientific problems, key technologies, demonstration applications, and industrial promotions of OEIC. This study details technical process, development status, existing future trends design, manufacturing, packaging OEIC to provide a systematic summary technology.

Background Single-fiber electromyography is the most sensitive neurophysiological test for diagnosis of myasthenia gravis (MG), but its use limited by potential risk transmission infections. Jitter analysis with disposable concentric needle electrodes (CNEs) therefore being investigated. This pilot study aimed to evaluate jitter CNEs MG. Methods Forty-two healthy Chinese volunteers and 44 MG patients were prospectively enrolled. classified according Osserman classification, acetylcholine...

In the call of global frequency band, 79GHz automotive radar has become a candidate for intelligent transportation system. It realizes high-precision target detection and high-resolution imaging by adopting phased array technology microwave integrated circuit, which broad market expectation. This paper introduces key technologies applications radar. Besides, it also analyzes electromagnetic compatibility between radio positioning, astronomy, amateur amateur-satellite services space research...

After classifying the Beijing subway transfer stations into different types, a comprehensive investigation on entire of is conducted. According to station characteristics with respect interchange form, time and passenger flow volume during rush hours, some problems are analyzed. Then, suggestions offered provide theoretical reference for planning operation stations.

The characteristics of passengers standing-position choice and the factors that have effects on passenger distribution are analyzed. According to investigation results, disproportion in one subway carriage is confirmed. curves about standing density (from 0-6p/m 2 ) number use different facilities Line 4 13 Beijing Subway fitted by means linear regression theory. Then, equations able predict under situations densities. After comparing predicted values with investigated values, feasibility...