科技通报
科技通報
과기통보
BULLETIN OF SCIENCE AND TECHNOLOGY
2015年
4期
22-24
,共3页
移动环境%通信节点%衰减性能%检测%模型
移動環境%通信節點%衰減性能%檢測%模型
이동배경%통신절점%쇠감성능%검측%모형
mobile environment%communication nodes%attenuation performance%detection%model
高速移动场景下的无线网络覆盖已经成为移动网络建设的重要组成部分，传统的移动节点衰减模型，由于其在计算的准确性和反应速度方面存在着一定的局限性，无法得到理想的衰减信道。为此，提出建立高速环境下移动节点衰减性能检测模型。新型高速环境下移动节点衰减性能检测模型通过测算大差分衰落特性，对高速移动环境下通信节点接收信号幅值强度进行计算，为高速铁路建网前期通信节点的建设规划和后期网络运行提供准确的基础数据。通过提高外置车顶天线的接收性能，减少测量过程中因速度的改变和场景的变化而造成的通信节点衰减性能的下降幅度。通过对高速移动场景下多尺度、多角度衰落系数的修订，消除地貌环境的影响，最终推衍出综合检测模型。仿真结果表明，新型的通信节点性能检测模型最终可将高速移动环境下的移动通信节点衰减性能检测参数计算的精准率提高20%。
高速移動場景下的無線網絡覆蓋已經成為移動網絡建設的重要組成部分，傳統的移動節點衰減模型，由于其在計算的準確性和反應速度方麵存在著一定的跼限性，無法得到理想的衰減信道。為此，提齣建立高速環境下移動節點衰減性能檢測模型。新型高速環境下移動節點衰減性能檢測模型通過測算大差分衰落特性，對高速移動環境下通信節點接收信號幅值彊度進行計算，為高速鐵路建網前期通信節點的建設規劃和後期網絡運行提供準確的基礎數據。通過提高外置車頂天線的接收性能，減少測量過程中因速度的改變和場景的變化而造成的通信節點衰減性能的下降幅度。通過對高速移動場景下多呎度、多角度衰落繫數的脩訂，消除地貌環境的影響，最終推衍齣綜閤檢測模型。倣真結果錶明，新型的通信節點性能檢測模型最終可將高速移動環境下的移動通信節點衰減性能檢測參數計算的精準率提高20%。
고속이동장경하적무선망락복개이경성위이동망락건설적중요조성부분，전통적이동절점쇠감모형，유우기재계산적준학성화반응속도방면존재착일정적국한성，무법득도이상적쇠감신도。위차，제출건립고속배경하이동절점쇠감성능검측모형。신형고속배경하이동절점쇠감성능검측모형통과측산대차분쇠락특성，대고속이동배경하통신절점접수신호폭치강도진행계산，위고속철로건망전기통신절점적건설규화화후기망락운행제공준학적기출수거。통과제고외치차정천선적접수성능，감소측량과정중인속도적개변화장경적변화이조성적통신절점쇠감성능적하강폭도。통과대고속이동장경하다척도、다각도쇠락계수적수정，소제지모배경적영향，최종추연출종합검측모형。방진결과표명，신형적통신절점성능검측모형최종가장고속이동배경하적이동통신절점쇠감성능검측삼수계산적정준솔제고20%。
High speed wireless network mobile scenarios covering has become an important part of mobile network construc?tion, the attenuation model of traditional mobile nodes, because it has some limitations in terms of accuracy and speed of re?sponse, unable to get the ideal fading channel. Therefore, proposed the establishment of a high speed environment mobile node attenuation performance testing model. Model under the environment of high-speed mobile node attenuation perfor?mance testing model fading characteristics by calculating the big difference, in high-speed mobile environment, communi?cation node the amplitude of received signal strength calculation, provide basic data for the construction of high speed rail?way network construction planning of early communication node and later network operation. By receiving the performance improvement of external roof antenna, reduce the communication nodes caused by changes in the speed of change and the scene in the measurement of the attenuation performance declines. Through the scale, the more the fast-moving scenes multi angle fading coefficients revision, eliminate the influence of landform environment, ultimately derived from the inte?grated detection model. The simulation results show that the performance of detection, communication node model can be mobile node high-speed mobile environment attenuation performance test parameter calculation accuracy rate 20%.
