论文标题
分析卫星系统地面继电器的中断概率
Analysis of the Outage Probability of Ground-Based Relaying for Satellite Systems
论文作者
论文摘要
本文研究了在暴露于阻塞情况的多腹膜卫星中使用地面继电器的理论基础。位于地面上的无活性和无障碍用户设备（UES）是不在卫星视野中的UE的中继节点。对于每个用户连接到卫星上的两个传输天线的情况，获得了信噪比（SNR）的精确闭合形式关系和中断概率。卫星和地面之间的通道被建模为阴影 - 军人（SR），而波动的两射线（FTR）褪色模型用于继电器和UE之间的MMWaves接地链接，以及具有完美和不完美的通道状态信息（CSI）的情况。仿真结果表明，如果在预编码中没有完美的CSI，并且仅估计信号阶段，则性能损失最小，并且系统可以通过花费有限的功率来达到其理想性能。无论如何，理想状态的封闭形式是预测在非理想条件下的性能的好代理。
This paper investigates the theoretical basis for using ground relaying in multi-antenna satellites exposed to blocking situations. Inactive and unobstructed User Equipments (UEs) located on ground are the relaying nodes of UEs that are not in the field of view of the satellite. Exact closed-form relationships of the Signal-to-Noise Ratio (SNR) and the outage probability are obtained for the case where each user is connected to two transmitting antennas at the satellite. The channel between the satellite and ground is modeled as a shadowed-Rician (SR), whereas a Fluctuating Two-Ray (FTR) fading model is used for the mmWaves ground link between relay and UE, as well as cases with perfect and imperfect Channel State Information (CSI). The simulation results showed that if perfect CSI is not available in the pre-coding and only the signal phase is estimated, the performance loss is minimal and the system can reach its ideal performance by spending limited power. In any case, the closed-form for the ideal state are a good proxy to predict the performance under non-ideal conditions.
