Hybrid spectrum access in a cognitive radio-enabled cooperative device-to-device network,International Journal of Communication Systems

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Hybrid spectrum access in a cognitive radio-enabled cooperative device-to-device network
International Journal of Communication Systems ( IF 1.7 ) Pub Date : 2021-05-06 , DOI: 10.1002/dac.4861
Pradeep Kumar ₁ , Abhijit Bhowmick ₁

Affiliation

In this paper, the performance of a co-operative device-to-device (D2D) network is investigated. All the D2D users sense the cellular user (CU) spectrum and use it in hybrid mode: underlay and overlay. The expressions of throughput and outage are developed under the considered network scenario. An algorithm is proposed to optimize the sensing time to minimize the outage. The performance is investigated in terms of throughput and outage for several network parameters such as a number of D2D users, sensing time, signal-to-noise ratio (SNR), allowable interference threshold, and CU transmit power. Sensing time is optimized to minimize the outage. The interference threshold and target rate have a significant impact on network performance. The network has to suffer outage for lower values of allowable interference threshold and higher values of the target rate. The impact of channel fading on the network performance is also studied. A simulation model is developed in MATLAB on the basis of the analytical development of the considered network model.

中文翻译：

支持认知无线电的协作设备到设备网络中的混合频谱接入

在本文中，研究了协作设备到设备 (D2D) 网络的性能。所有 D2D 用户都感知蜂窝用户 (CU) 频谱并以混合模式使用它：底层和叠加。吞吐量和中断的表达式是在所考虑的网络场景下开发的。提出了一种算法来优化传感时间以最小化中断。根据多个网络参数（例如 D2D 用户数量、感测时间、信噪比 (SNR)、允许干扰阈值和 CU 发射功率）的吞吐量和中断来研究性能。感测时间经过优化，以最大限度地减少中断。干扰阈值和目标速率对网络性能有显着影响。网络必须因允许干扰阈值的较低值和目标速率的较高值而遭受中断。还研究了信道衰落对网络性能的影响。在对所考虑的网络模型进行分析开发的基础上，在 MATLAB 中开发了一个仿真模型。

更新日期：2021-06-21

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