Showing 2,681 - 2,700 results of 29,875 for search '"communications"', query time: 0.16s Refine Results
  1. 2681
  2. 2682
  3. 2683
  4. 2684

    Trellis orthogonal reconstruction algorithm based on orthogonal space-time block code for wireless communication system in high-speed railway by Wan-tuan LUO, Xu-ming FANG, Meng CHENG

    Published 2014-07-01
    “…The simulation shows that the TORA improves BER performance of MIMO schemes based on OSTBC for mobile communication system in high-speed railway.…”
    Get full text
    Article
  5. 2685

    Simulation of transmission characteristics of oceanic wireless optical communication systems based on orbital angular momentum multiplexing with space-time coding by Xiaoli YIN, Tong ZHENG, Zhiwen SUN, Zhaoyuan ZHANG

    Published 2020-12-01
    “…In order to mitigate the crosstalk caused by oceanic turbulence in the underwater wireless orbital angular momentum multiplexing optical communication system, the application of space-time coding technology in the system was studied.Based on Rytov approximation, the covariance method and interpolation method were used to simulate correlated random phase screens and then the influence of time-varying oceanic turbulence channel on orbital angular momentum signal was studied.The transmission characteristics of orbital angular momentum multiplexing optical communication system with space-time coding was analyzed by simulation.The phase structure function of the time-varying phase screens and the detection probability distribution of the beam carrying the orbital angular momentum through the time-varying simulation channel were in line with theoretical expectations.The simulation results show that the space-time coding technology can effectively mitigate the influence of ocean turbulence on the system bit error rate.…”
    Get full text
    Article
  6. 2686

    A Novel Access Control and Energy-Saving Resource Allocation Scheme for D2D Communication in 5G Networks by Ning Du, Kaishi Sun, Changqing Zhou, Xiyuan Ma

    Published 2020-01-01
    “…This paper investigates access link control and resource allocation for the device-to-device (D2D) communication in the fifth generation (5G) cellular networks. …”
    Get full text
    Article
  7. 2687
  8. 2688
  9. 2689
  10. 2690

    Energy-Efficiency Maximization in Backscatter Communication-Based Non-Orthogonal Multiple Access System: Dinkelbach and Successive Convex Approximation Approaches by Dingjia Lin, Tianqi Wang, Kaidi Wang, Zhiguo Ding

    Published 2024-01-01
    “…This paper investigates a backscatter communication (BackCom) based non-orthogonal multiple access (NOMA) system in a multiple-input and single-output (MISO) scenario, where two decoding methods are deployed, including the sum-capacity approach and QR decomposition. …”
    Get full text
    Article
  11. 2691

    Real-Time Implementation of a Novel Design Approach for Sub-GHz Long-Range Antenna for Smart Internet of Things Communication by Sneha Bhardwaj, Praveen Kumar Malik, Anish Gupta, Rajesh Singh

    Published 2023-01-01
    “…The designed antenna is successfully implemented with LoRa connectivity and communicates the data up to 8 km in line-of-sight communication, more than 1 km in urban environments, and approximately 250 m of connectivity in building areas.…”
    Get full text
    Article
  12. 2692
  13. 2693
  14. 2694

    Religieuse Kommunikasie by Willem de Klerk

    Published 2022-11-01
    Subjects: “…religious communication…”
    Get full text
    Article
  15. 2695

    Interpersonal relations by Llew von Essen

    Published 2022-11-01
    Subjects:
    Get full text
    Article
  16. 2696
  17. 2697
  18. 2698
  19. 2699
  20. 2700