Showing 241 - 260 results of 3,139 for search '"wireless"', query time: 0.07s Refine Results
  1. 241
  2. 242

    An Autonomous Packet Transmission Strategy for Opportunistic Wireless Sensor Networks by Hakki Soy, Özgür Özdemir, Mehmet Bayrak

    Published 2012-11-01
    “…We consider a wireless sensor network that comprises a single hop between the sensor nodes and the central controller node with multiple antennas. …”
    Get full text
    Article
  3. 243

    Freeway intelligent transportation oriented wireless access technologies evaluation by Shang-jing LIN, Jin TIAN, Jin-hong LI

    Published 2017-12-01
    “…The popularization of broadband mobile communication technology has paved a way for the development of intelligent transportation industry.At the meantime,the intelligent transportation system (ITS) has also put forward higher requirements for the broadband mobile communication technologies.Based on the summary of the challenges faced by the broadband mobile communication technologies when applied to ITS,two typical expressway communication scenarios are selected in which the performance of wireless access technologies are evaluated and compared.It can provide theoretical reference for the development of ITS.…”
    Get full text
    Article
  4. 244

    Polar codes and polar processing for 6G wireless systems by Kai NIU, Jinchen DAI, Jinnan PIAO

    Published 2020-05-01
    “…As the first type of channel code achieving the channel capacity,polar codes are an important candidate for the 6G data transmission.A polarized processing framework for the 6G systems was proposed.In this framework,in order to fulfill the requirement of ultra-reliable transmission,a high-performance coding scheme of concatenated polar code was designed to approach the channel capacity with finite-length.Then,the polar coded MIMO scheme was devised to match the requirement of the high spectrum efficiency.Finally,the scheme of polar coded non-orthogonal multiple access was investigated to improve the transmission capacity.All these schemes indicate that polar processing can dramatically boost the performance of 6G wireless transmission and become a promising direction.…”
    Get full text
    Article
  5. 245
  6. 246

    Outage performance analysis of wireless powered railway Internet of things by Jiaxing MA, Ke XIONG, Yu ZHANG, Zhangdui ZHONG, Qiang NI

    Published 2020-09-01
    “…Based on the scenario of railway Internet of things,the system outage performance of the relay network was analyzed,which was assisted with the power beacon (PB),using the half-duplex decode-and-forward relay mode over the Rician fading channel.In view of the equipment supply problems in railway scenes,such as difficult battery replacing,high management overhead,difficult wiring,etc.,the wireless energy collection was applied to railway scenes,providing sufficient and stable energy for the energy-constrained wireless equipment,thus solving the equipment supply problems in traditional railways.Considering that the source node and the relay node in the network were energy limited nodes,and the energy of the information transmission came from the radio frequency signal transmitted from the PB deployed on the train.The source node and the relay node collected energy from the PB,and the source node sent information to the relay node by using the collected energy,and then the relay node forwarded the information received to the destination node.The closed-form expressions of the network end-to-end outage probability and the throughput were derived.The analytical results were demonstrated by Monte Carlo simulation.And based on this analysis,the impact of the ratio of transmitting power of the PB to noise,the Rician K-factor,the time switching factor,transmission rate and relative position on the end-to-end outage probability and throughput were studied.When the train is in the middle of the source node and the relay node,the system can obtain better outage and throughput performance.…”
    Get full text
    Article
  7. 247

    Power allocation in wireless network virtualization based on resource sharing by Bin CAO, Wen-qiang LANG, Zhuo CHEN, Yun LI

    Published 2016-02-01
    Subjects: “…wireless network virtualization…”
    Get full text
    Article
  8. 248

    Multifactor task allocation problem in wireless sensor and actuator networks by Lei MU, Jian-ying CHEN, Xiao-mei QU, Tao LIU

    Published 2017-10-01
    Subjects: “…wireless sensor and actuator network…”
    Get full text
    Article
  9. 249
  10. 250
  11. 251

    TCP-friendly streaming medium transmitting mechanism in wireless network by CHEN Zhi-gang, DENG Xiao-heng, ZHANG Lian-ming, ZHAO Ming

    Published 2007-01-01
    “…To maintain Streaming media services flows friendly to TCP flows and h/ld the QoS of the streaming service in wireless networks,an adaptive rate control mechanism was proposed.Packet loss between.etwork congestion and wireless link error was distinguished to ’et the accurate state of the networks by the receiver.Occupati/n of the receiver buffer,which reflected how long the temporar)ly stored streaming medium data could be played,was also combined into this algorithm.And tradeoff between TCP-friendly and QoS of streaming media service was achieved through multi-level rate adjustment according to packet loss rate of congestion and queue length of receiver.The results of simulations show that good throughput was gained compared with TCP and TFRC,at most reaching 2M,in condition of 0-0.1 link drop rate,2 and 32 conncections.As link error and congestion was seperated by WTFCC,therefor,end to end packet drop rate was higher than TCP and TFRC,and also of higer throughput.Nomalized throughput indicated that WTFCC was friendly to TCP.…”
    Get full text
    Article
  12. 252
  13. 253

    A Hybrid Load Balancing Scheme for Games in Wireless Networks by Hye-Young Kim, Hwa-Jin Park, Seojeong Lee

    Published 2014-05-01
    “…A wireless network consists of a large number of nodes with limited resources. …”
    Get full text
    Article
  14. 254

    Control Theory-Based Load Balancing for Wireless Sensor Network by Sanqi Zhou, Yinchao Chen

    Published 2014-03-01
    “…Wireless sensor networks have been widely studied for decades. …”
    Get full text
    Article
  15. 255

    Capacity analysis of three-node wireless Gaussian relay channel by ZHANG Yuan, GAO Xi-qi

    Published 2006-01-01
    Subjects: “…wireless relay channel…”
    Get full text
    Article
  16. 256

    Random Walk Based Location Prediction in Wireless Sensor Networks by Zhaoyan Jin, Dianxi Shi, Quanyuan Wu, Huining Yan

    Published 2013-12-01
    “…With the development of wireless sensor network (WSN) technologies, WSNs have been applied in many areas. …”
    Get full text
    Article
  17. 257
  18. 258
  19. 259
  20. 260

    Research on low-complexity XL-MIMO wireless transmission design by Ruirui SUN, Yu HAN, Shi JIN, Jue WANG

    Published 2023-08-01
    “…Extra-large scale MIMO (XL-MIMO) can meet the requirement of high spectral efficiency in 6G communication, but also faces the challenge caused by the increase in computational complexity.It is found that the unique spatial non-stationary characteristics of XL-MIMO channel brings new possibilities for low-complexity wireless transmission design.Firstly, starting from the near-field propagation effect, the research results of XL-MIMO channel characteristics analysis and channel modeling were combed, and the causes of spatial non-stationarity were deeply discussed.Furthermore, the concept of array visibility region (VR) in XL-MIMO was introduced, and the low-complexity wireless transmission design combined with VR information was discussed.Then, from the perspective of sub-array partition and distributed signal processing, the implementation of XL-MIMO low-complexity system architecture was introduced, and the corresponding design schemes were summarized.Finally, the future research direction was prospected.…”
    Get full text
    Article