电子与信息学报
電子與信息學報
전자여신식학보
JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY
2013年
8期
1971-1976
,共6页
朱元萍%徐景%杨旸%王江
硃元萍%徐景%楊旸%王江
주원평%서경%양양%왕강
无线通信%小区间干扰%路损%阴影衰落%概率密度函数
無線通信%小區間榦擾%路損%陰影衰落%概率密度函數
무선통신%소구간간우%로손%음영쇠락%개솔밀도함수
Wireless communication%Inter-cell interference%Path loss%Shadow fading%Probability Density Function (PDF)
在同频复用网络中,小区间干扰已成为限制系统性能提升的关键因素之一。该文对单个干扰小区产生的上行小区间干扰链路进行统计建模,通过分析路损的矩生成函数和累积量生成函数,得出了干扰链路路损分布函数的近似表达式。进一步地,根据得出的统计模型分析系统参数设置对干扰路损分布的影响。研究发现,阴影衰落的标准差越大,上行干扰路损分布越接近高斯分布。另外,传播模型参数中的衰减指数也对路损分布有较大的影响。
在同頻複用網絡中,小區間榦擾已成為限製繫統性能提升的關鍵因素之一。該文對單箇榦擾小區產生的上行小區間榦擾鏈路進行統計建模,通過分析路損的矩生成函數和纍積量生成函數,得齣瞭榦擾鏈路路損分佈函數的近似錶達式。進一步地,根據得齣的統計模型分析繫統參數設置對榦擾路損分佈的影響。研究髮現,陰影衰落的標準差越大,上行榦擾路損分佈越接近高斯分佈。另外,傳播模型參數中的衰減指數也對路損分佈有較大的影響。
재동빈복용망락중,소구간간우이성위한제계통성능제승적관건인소지일。해문대단개간우소구산생적상행소구간간우련로진행통계건모,통과분석로손적구생성함수화루적량생성함수,득출료간우련로로손분포함수적근사표체식。진일보지,근거득출적통계모형분석계통삼수설치대간우로손분포적영향。연구발현,음영쇠락적표준차월대,상행간우로손분포월접근고사분포。령외,전파모형삼수중적쇠감지수야대로손분포유교대적영향。
For frequency reuse one systems, the inter-cell interference is one of the restricting factors of the system performance. This paper presents a statistical modeling of the path loss of uplink inter-cell interference link from single interference cell. Through the derivation and analysis of the Moment Generating Function (MGF) and the Cumulant Generating Function (CGF), the reliable approximated probability density function of the path loss of interfering link is derived. Based on the investigation of the derived results, it is observed that with the increase of the variance of shadow fading, the distribution of the path loss of interfering link tends to be Gaussian distribution. In addition, the attenuation exponent of the path loss model has great influence on the distribution of the path loss.