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    Joint Subchannel Pairing and Power Control for Cognitive Radio Networks with Amplify-and-Forward Relaying by Yanyan Shen, Shuqiang Wang, Zhiming Wei

    Published 2014-01-01
    “…We study the joint subchannel pairing and power allocation problem in relay-based cognitive radio networks. The objective is to maximize the sum rate of the secondary user that is helped by an amplify-and-forward relay. …”
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    Low-Complexity Decoding Algorithms for Distributed Space-Time Coded Regenerative Relay Systems by Chao Zhang, Huarui Yin

    Published 2012-09-01
    “…We examine decoding structure for distributed space-time coded regenerative relay networks. Given the possible demodulation error at the regenerative relays, we provide a general framework of error aware decoder, where the receiver exploits the demodulation error probability of relays to improve the system performance. …”
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  6. 546

    An Unbound Network Coding for Extended IEEE 802.16j Multihop Relay Network by Adisak Sukul, J. Morris Chang, Pattarasinee Bhattarakosol

    Published 2012-03-01
    “…This paper proposes a network coding-based relay scheme for multi-hop relay networks, called NC-BR. …”
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    Power allocation algorithm of full duplex cognitive relay network based on energy harvesting by Shibing ZHANG, Liuke HAN, Meijuan ZHANG

    Published 2020-09-01
    “…To alleviate the shortage of spectrum resources and improve the power utilization of cognitive radio networks,a resource allocation algorithm of full duplex cognitive relay networks with energy harvesting was proposed.In the algorithm,the coefficient for power splitting of the relay and the transmit power of the secondary users were jointly optimized to maximize the throughput of the secondary users under the interference to primary users and energy harvesting constraints.Since the optimization of the algorithm was non-convex,it was transformed into two sub-optimizations,the sub-optimization of the coefficient for power splitting and the sub-optimization of the power transmitted of secondary users,which were the solvable convex sub-optimizations.Then,the final solution of the original optimization was obtained with the iterative algorithm.Simulation results show that the throughput of the proposed algorithm,can obtain 2 times throughput of the networks with half-duplex power splitting algorithm and 1.5 times throughput of the networks with full-duplex time switching algorithm.…”
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    DETERMINATIONS OF THE SOWING TIME OF GRASS PEA IN TEF- GRASS PEA RELAY INTERCROPPING SYSTEMS by Agegnehu Shibabaw, Bitwoded Derebe, Yechale Mengie, Oumer Beshir, Wudu Getahun, Alemayehu Assefa

    Published 2024-12-01
    “…Therefore, a field experiment was initiated to optimize appropriate sowing date of grass pea for tef- grass pea relay inter cropping systems during 2022 and 2023 main rainy seasons. …”
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    High Reliable Relay Selection Approach for QoS Provisioning in Wireless Distributed Sensor Networks by Yong Jin

    Published 2013-09-01
    “…In wireless distributed sensor networks, one open problem is how to guarantee the reliable relay selection based on the quality of services diversity. …”
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