摘要
为抑制全自动运行(FAO)系统车地无线通信同频组网方案下相邻小区间的同频干扰,分析车地无线通信系统中同频干扰的成因,考虑传统干扰抑制技术的局限性,提出一种结合功率控制与动态频谱分配算法的干扰抑制方案。在传统软频率复用技术的基础上,结合动态频谱分配技术和功率控制参数调整,实现相邻小区间频带资源的授权调用,对小区内用户发送功率的覆盖范围进行实时控制。实例仿真计算结果表明,该方案相比软频率复用技术,提高了系统性能,具有更科学的覆盖范围控制和更优的干扰抑制效果。
To suppress the co-frequency interference between neighboring cells under the same-frequency networking scheme in the wireless communication system of fully automatic operation (FAO) system,the causes of co-channel interference in the wireless communication system of the vehicle were analyzed,and the limitations of the traditional interference suppression technology were considered. An interference suppression scheme combining power control and dynamic spectrum allocation algorithm was proposed. Based on the traditional soft frequency reuse technology,the dynamic spectrum allocation technology and power control parameter adjustment were combined to implement the authorization call of the frequency resources between adjacent cells,and the coverage of the user ’s transmit power within the cell was real-time controlled. The simulation results show that the proposed scheme improves the system performance compared with soft frequency reuse technology,and it has more scientific co- verage control and better interference suppression effects.
作者
刘晓娟
徐亚顺
LIU Xiao-juan;XU Ya-shun(School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《计算机工程与设计》
北大核心
2019年第7期1829-1834,1845,共7页
Computer Engineering and Design
