Showing 181 - 200 results of 617 for search '"relay"', query time: 0.07s Refine Results
  1. 181
  2. 182

    A Proposed Chaotic-Switched Turbo Coding Design and Its Application for Half-Duplex Relay Channel by Tamer H. M. Soliman, Fengfan Yang, S. Ejaz

    Published 2015-01-01
    “…Extensions of these chaotic-switched turbo coding schemes to half-duplex relay systems are also described. Results of simulations of these new secure turbo coding schemes are compared to classical turbo codes with the same coding parameters and the proposed system is able to achieve secured reasonable bit error rate performance when it is made to switch between different puncturing and design configuration parameters especially with low switching rates.…”
    Get full text
    Article
  3. 183

    Secure relay node selection method based on Q-learning for fog computing in 5G network by Shanshan TU, Jinliang YU, Yuan MENG, M WWAQAS, Lei LIU

    Published 2019-07-01
    “…A Q-learning-based optimal dual-relay node selection method was proposed. Firstly, a security fog computing structure model based on social awareness was constructed, and then an optimal dual-relay node selection method based on Q-learning algorithm was designed under this model, which achieved the selection of optimal dual-relay nodes in dynamic environment. …”
    Get full text
    Article
  4. 184
  5. 185
  6. 186
  7. 187
  8. 188
  9. 189
  10. 190
  11. 191

    Outage and Throughput Analysis of Cooperative Non-Orthogonal Multiple Access based SWIPT Cognitive Relay Network by Abdul Ali Khan, Punithavathi M. Thirunavakkarasu, Nawaf Waqas

    Published 2025-01-01
    “…Two distinct scenarios: one where a direct link exists between the source node S and the far user F, and another one where communication relies on an indirect path incorporating relay node N between node S and F. A new cooperative NOMA based SWIPT cognitive relay protocol is proposed, where a primary user S transmits a composite signal containing information of a near N and far user F, N which acts as an energy harvesting relay first apply NOMA to decode far user information to get its own information The remaining power is harvested by the relay node, and this harvested power is used to transmit information to both the far and cognitive users, respectively. …”
    Get full text
    Article
  12. 192
  13. 193
  14. 194

    Detection probability analysis of cooperative spectrum sensing with the N<sup>th</sup>best relay selection by Xiao-ge ZHANG, Shi-bing ZHANG, Gong-an QIU

    Published 2011-11-01
    “…In the cognitive radio system,the optimal relay would be selected from the n available ones to obtain the best sensing performance.However,in actual systems,the secondary or even the more general N<sup>th</sup>best relay may be selected for various reasons.Therefore,the cooperative spectrum sensing based on the N<sup>th</sup>best relay selection was proposed.The closed-form expression of the detection probability was derived in Rayleigh fading channels.Numerical results show that the detection probability declines continuously even below the one of the arbitrary selection as N increases,and that the one based on the optimal or suboptimal selection increases obviously but the one based on the worst or near worst selection decreases slightly as n increases.…”
    Get full text
    Article
  15. 195

    Game Theoretical Approaches for Optimizing Multi-Carrier Half-Duplex Successive Relaying Based Cooperative NOMA by H. Horler, B. Rastegari, S. X. Ng

    Published 2024-01-01
    “…In this work, a novel power auctioneers network is proposed to allow the sharing of resources from Edge Users in exchange for performance gains using either the Cooperative Non-Orthogonal Multiple Access (C-NOMA) or Half-Duplex Successive Relaying based C-NOMA protocol. The latter is presented as a novel method of using two relays in C-NOMA through successive relaying to overcome the multiplexing loss in traditional C-NOMA of the far user. …”
    Get full text
    Article
  16. 196
  17. 197
  18. 198
  19. 199
  20. 200

    Relay Selection and Subcarrier-Pair Based Energy-Efficient Resource Allocation for Multirelay Cooperative OFDMA Networks by Wanming Hao, Shouyi Yang, Wanliang Hao

    Published 2014-01-01
    “…Energy-efficient resource allocation is investigated for a relay-based multiuser cooperation orthogonal frequency division multiple access (OFDMA) uplink system with amplify-and-forward (AF) protocol for all relays. …”
    Get full text
    Article