计算机技术与发展
計算機技術與髮展
계산궤기술여발전
COMPUTER TECHNOLOGY AND DEVELOPMENT
2013年
4期
258-261
,共4页
相关系数%阴影衰落%同频干扰概率%GSM-R
相關繫數%陰影衰落%同頻榦擾概率%GSM-R
상관계수%음영쇠락%동빈간우개솔%GSM-R
correlation coefficient%shadowing fading%co-channel interference probability%GSM-R
在GSM-R移动通信网络建设中应特别注意干扰问题,以便GSM-R网络更好地发挥作用.文中首先推导了GSM-R线状蜂窝覆盖模式下的同频干扰概率;然后应用Wilkinson方法推导了非线状蜂窝覆盖模式下经历阴影衰落的多个相关干扰源情况下的同频干扰概率公式;最后,通过仿真分析,验证了同频干扰概率随着同频复用组增大而减小,经历相关阴影衰落的同频干扰信号间的相关性对同频干扰概率有较小的影响,有用信号与各同频干扰信号间的相关性对GSM-R系统同频干扰概率的影响较大.
在GSM-R移動通信網絡建設中應特彆註意榦擾問題,以便GSM-R網絡更好地髮揮作用.文中首先推導瞭GSM-R線狀蜂窩覆蓋模式下的同頻榦擾概率;然後應用Wilkinson方法推導瞭非線狀蜂窩覆蓋模式下經歷陰影衰落的多箇相關榦擾源情況下的同頻榦擾概率公式;最後,通過倣真分析,驗證瞭同頻榦擾概率隨著同頻複用組增大而減小,經歷相關陰影衰落的同頻榦擾信號間的相關性對同頻榦擾概率有較小的影響,有用信號與各同頻榦擾信號間的相關性對GSM-R繫統同頻榦擾概率的影響較大.
재GSM-R이동통신망락건설중응특별주의간우문제,이편GSM-R망락경호지발휘작용.문중수선추도료GSM-R선상봉와복개모식하적동빈간우개솔;연후응용Wilkinson방법추도료비선상봉와복개모식하경력음영쇠락적다개상관간우원정황하적동빈간우개솔공식;최후,통과방진분석,험증료동빈간우개솔수착동빈복용조증대이감소,경력상관음영쇠락적동빈간우신호간적상관성대동빈간우개솔유교소적영향,유용신호여각동빈간우신호간적상관성대GSM-R계통동빈간우개솔적영향교대.
In order to better play a role,in GSM-R mobile communication network construction should pay special attention to interfer-ence problem. First derive the probability of co-channel interference in GSM-R system where the system is linear covered. And then,de-rive the probability of co-channel interference applying the Wilkinson method which signals undergo correlated shadowing fading where the system is nonlinear covered. In the end,through the simulation analysis,tested that the probability of co-channel interference is de-creasing with increasing the co-channel reusing group,the correlation between co-channel interference undergoing correlated log-normal shadowing has little impact on the probability of co-channel interference,the correlation between useful signal and the each co-channel interference signal has great influence on the probability of co-channel interference in GSM-R system.