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A study of power allocation in multi-MRN aided multiuser networks

一种多用户移动中继系统的功率分配方法研究

Abstract

It is promising that mobile relay nodes (MRNs), i.e., relays mounted on top of transportation vehicles, are deployed in future mobile communication systems in order to improve system performance. In this paper a multi-MRN aided multiuser system is studied. The system performance under direct transmission mode and MRN assisted transmission mode are compared with variable parameter of vehicle penetration loss (VPL). The mobile users are separated into two categories in which the direct transmission mode and the MRN assisted transmission mode are selected to transmit in downlink, respectively. A novel power allocation algorithm is proposed to increase the average system capacity under the constraint of total transmit power. The different power allocation schemes are applied for users in two categories to improve the system performance. It is demonstrated by simulation results that the proposed algorithm outperforms the average power allocation algorithm.

摘要

创新点

本文针对多用户移动中继通信系统, 提出了一种移动中继辅助的多用户系统中下行链路的功率分配方法。 系统中的移动中继设备部署于公交车顶, 因此, 基站通过两种传输方式与公交车内的用户终端通信: 穿透车厢体的直接传输模式, 以及经由车体内外天线转发的移动中继辅助传输模式。 论文首先分析对比了两种传输模式的系统容量, 然后针对每个用户进行传输模式的选择。 在基站发射功率一定的条件下, 论文提出了一种基于传输模式选择的混合功率分配方法, 从而达到最大化系统平均容量。

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Correspondence to Xiangyang Wang.

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Wang, X., Gu, X. & Li, Q. A study of power allocation in multi-MRN aided multiuser networks. Sci. China Inf. Sci. 60, 022303 (2017). https://doi.org/10.1007/s11432-015-0686-0

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Keywords

  • mobile relay nodes (MRN)
  • vehicle penetration loss (VPL)
  • transmission mode
  • average system capacity
  • power allocation

关键词

  • 移动中继
  • 车体穿透损耗
  • 传输模式
  • 系统平均容量
  • 功率分配