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首页> 外文期刊>Wireless Communications Letters, IEEE >Spectrum and Power Allocation for Vehicular Communications With Delayed CSI Feedback
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Spectrum and Power Allocation for Vehicular Communications With Delayed CSI Feedback

机译:具有延迟CSI反馈的车载通信的频谱和功率分配

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Channel state information (CSI) at the base station (BS) is critical to resource allocation design for wireless networks, but it is hard to obtain accurate CSI in a high mobility vehicular environment. In this letter, we study the spectrum and power allocation problem in device-to-device-enabled vehicular networks, where CSI of vehicular links is only reported to the BS periodically. We maximize the sum throughput of all vehicle-to-infrastructure (V2I) links while guaranteeing the reliability of each vehicle-to-vehicle (V2V) link with the delayed CSI feedback. We propose a low-complexity algorithm to find the optimal spectrum sharing strategy among V2I and V2V links and properly adjust their transmit powers. Its desirable performance is confirmed by computer simulation.
机译:基站(BS)的信道状态信息(CSI)对于无线网络的资源分配设计至关重要,但是在高移动性车辆环境中很难获得准确的CSI。在这封信中,我们研究了启用设备到设备的车载网络中的频谱和功率分配问题,其中车载链路的CSI仅定期报告给BS。我们最大程度地提高了所有车辆到基础设施(V2I)链路的总吞吐量,同时通过延迟的CSI反馈保证了每个车辆到车辆(V2V)链路的可靠性。我们提出一种低复杂度的算法,以在V2I和V2V链路之间找到最佳的频谱共享策略,并适当调整它们的发射功率。通过计算机仿真证实了其理想的性能。

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