EGSM退频影响分析及研究

随着GSM—R铁路通信系统的发展，为避免GSM系统与铁道部GSM—R系统间的干扰，EGSM退频显得尤为重要。主要介绍了增强型全球移动通信系统（EGSM）退频对无线网络质量和容量所造成的影响，并通过频率复用、跳频和分层覆盖等技术方式来提高网络性能，最后设计了一种自动分频软件，以实现频率分配的最优化，提高EGSM退频后频率分配的质量和效率，实现了EGSM的完全退频。

Analysis and Study on Logout Influence of EGSM Band

In this paper, the influence on the quality and capacity of the wireless network is described, which is resulted from the logout of EGSM band from the wireless network. Some technical measures, including frequency reuse, frequence hopping, layered technology, are employed to improve the network performance. Finally, a frequency allocation algorithm is designed and implemented, thus to achieve the optimization of frequency allocation and to enhance the quality and efficiency of the frequency allocation after the logout of EGSM band from the wireless network.