无线移动信道特征提取和场景判别  

Feature extraction of wireless mobile channel and the scene discrimination

作　　者：刘震 李莉[1] 叶鹏 Liu Zhen;Li Li;Ye Peng(The College of Information,Mechanical and Electrical Engineering,Shanghai Normal University,Shanghai 200234,China)

机构地区：[1]上海师范大学信息与机电工程学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2018年第2期156-163,共8页Journal of Shanghai Normal University(Natural Sciences)

摘　　要：基于三种已知场景无线信道脉冲响应的时域实测数据,运用统计方法,提取有多径效应的信道平均多径时延特征参数和无线信道响应的时域幅值包络特征.根据这些特征参数,给出不同场景无线信道的判别机制,再将无线信道场景判别机制应用于给定的两组未知场景实测无线信道响应数据,通过将未知场景无线信道特征与已知场景无线信道特征进行相关匹配,可以估计两种未知场景属于三种已知场景中的哪一种.Based on the time domain impulse response measurements of wireless channel in three known multipath scenarios,the average time delay parameters and time domain amplitude envelope characteristics of wireless channel response were extracted by applying statistical method.The mechanism to discriminate different multipath scenarios was identified according to the characteristics of these parameters.Besides,by applying the proposed discrimination mechanism into two wireless channel impulse response data sets measured in unknown scenarios,the features of the wireless channel could be extracted.The unknown scenarios could be determined belonging to which one of the three known scenarios by comparing the features of the unknown wireless channel with those of the known wireless channel.

关 键 词：多径效应 平均时延 特征提取 场景判别 

分 类 号：TN929[电子电信—通信与信息系统]