通信学报 ›› 2014, Vol. 35 ›› Issue (1): 115-127.doi: 10.3969/j.issn.1000-436x.2014.01.014
刘留1,陶成1,陈后金2,周涛1,孙溶辰2,邱佳慧1
出版日期:
2014-01-25
发布日期:
2017-06-17
基金资助:
Liu LIU1,Cheng TAO1,Hou-jin CHEN2,Tao ZHOU1,Rong-chen SUN2,Jia-hui QIU1
Online:
2014-01-25
Published:
2017-06-17
Supported by:
摘要:
归纳了国内外已开展的高速铁路无线信道测量活动,总结了国际标准化组织关于高速铁路无线信道的相关提案和标准化模型,分类讨论了高速铁路在不同条件下无线信道大尺度、小尺度等方面的衰落特性,得出高速铁路无线信道特征参数受传播环境、位置等因素影响较大;根据高速铁路无线信道实际测量的问题,详细分析了基于理论方法的高速铁路无线信道建模类型,最后提出了未来的研究方向和重点。
刘留,陶成,陈后金,周涛,孙溶辰,邱佳慧. 高速铁路无线传播信道测量与建模综述[J]. 通信学报, 2014, 35(1): 115-127.
Liu LIU,Cheng TAO,Hou-jin CHEN,Tao ZHOU,Rong-chen SUN,Jia-hui QIU. Survey of wireless channel measurement and characterization for high-speed railway scenarios[J]. Journal on Communications, 2014, 35(1): 115-127.
表1
近几次国内外高铁车地间信道测量参数指标"
RUSK Sounder德国ICE测试指标[ | PropSound台湾测试参数[ | PropSound京津城际测试参数[ | PropSound郑西线测试参数[ | 广深港高铁测试参数[ | |||||||||
参数 | 指标 | 参数 | 指标 | 参数 | 指标 | 参数 | 指标 | 参数 | 指标 | ||||
频率 | 5.2 GHz | 频率 | 5.2 GHz | 频率 | 2.35 GHz | 频率 | 2.35 GHz | 频率 | 2.4 GHz | ||||
带宽 | 120 MHz | 带宽 | 50 MHz | 带宽 | 5 MHz | 带宽 | 50 MHz | 带宽 | 40 MHz | ||||
CIR长度 | 1.6 μs | 发射功率 | 31 dBm | 发射功率 | 5 W(外接功放) | 发射功率 | 30.8/32.7 dBm | 发射功率 | 20 dBm | ||||
发射天线 | 车顶 | CIR速率 | 2 050.5 Hz | CIR速率 | 984 Hz | CIR速率 | 1 968.5 Hz | CIR速率 | 1 968.5 Hz | ||||
接收天线 | 均匀圆天线阵UCA,地面 | 发射天线 | Dipole,2x8 全向天线阵地面 | 发射天线 | Dipole车内 | 发射天线 | Dipole车内 | 发射天线 | 定向天线地面 | ||||
速度 | 20,100,240 km/h | 接收天线 | Dipole,2x8全向天线阵车内 | 接收天线 | Dipole地面 | 接收天线 | Dipole地面 | 接收天线 | 全向天线车内 | ||||
速度 | 260~290 km/h | 速度 | 240 km/h | 速度 | 198 km/h | 速度 | 198 km/h | ||||||
激励方式 | 突发 | 激励方式 | 连续 | 激励方式 | 连续 | 车窗插损 | 12.4 dB |
表3
高铁典型场景大尺度衰落参数[35,36,37,38]"
测量方法 | 场景 | 路损指数 | 阴影衰落标准差 | 适用范围 | ||
非开阔区域[ | 2.2~3.28 | 2.21 | ||||
窄带信道(GSM-R)930.2 MHz~932.8 MHz | 高架桥 | 开阔区域[ | 2.1~2.5 | 2.09 | 250~3 200 m | |
山区[ | 3.5 | 2.14 | ||||
城市[ | 4.05 | 3.07 | ||||
U型槽[ | 3.5~4.3 | 3~4 | 深浅适用 | |||
WINNER II,120 MHz,5.3 GHz[ | 4.04 | 2.5 | — | |||
车厢内部,100 MHz,2.35 GHz[ | 1.8~2.1 | 2.3~2.8 | 1~15 m | |||
高架桥,10 MHz,2.35 GHz[ | 3.03~3.56 | 2.0~4.8 | 400~2 500 m | |||
宽带信道 | 山区,50 M,2.4 GHz[ | 2.4 | 3.3 | d<788.6 m | ||
3.88 | 4.2 | d>788.6 m | ||||
遮挡高架桥,50 MHz,2.35 GHz | 3.89 | 2.5 | d>90 m | |||
U型槽,50 MHz,2.35 GHz[ | 2.86 | 1.7 | d>40 m |
表4
高铁典型场景K因子衰落模型"
场景 | K因子 | 适用范围 | 测量频率 |
高架桥[ | 均值6.16~7.93 | Mobile-Relay | (GSM-R)930.2 MHz~932.8 MHz |
均方差:1.63~2.05 | |||
U型槽[ | 均值?1.14~2.28 | Mobile-Relay | (GSM-R)930.2 MHz~932.8 MHz |
均方差:4.08~4.23; | |||
U型槽[ | K=?0.004 9 d+5.08; | Mobile-Relay | (GSM-R)930.2 MHz~932.8 MHz |
K=?0.002 2 d+3.75; | |||
K=?0.002 1 d+5.07 | |||
车厢内部[ | 均值10.41,均方差:4.9; | 车内-车内 | 2.35 GHz,100 MHz |
均值4.09,均方差:4.46; | |||
平原[ | 均值4.6,5.2 | 直接覆盖 | 2.1 GHz,3.84 MHz |
乡村[ | 均值2.5 | 直接覆盖 | 2.1 GHz,3.84 MHz |
高架桥1[ | K=?0.033 7d+23.05,d<250 | Mobile-Relay | 2.35 GHz,10 MHz |
K~N(8.25,1.052),d>250 | 无树木遮挡 | ||
高架桥2[ | K=?0.001 9d+9.49d,std=6.1 dB | Mobile-Relay | 2.35 GHz,50 MHz |
有树木遮挡 | |||
U型槽[ | K=?0.0117 d+10.12,d>0,std=3.35 dB | Mobile-Relay | 2.35 GHz,50 MHz |
K=0.0176 d+11.56,d<0,std=3.15 dB | 深槽 | ||
K=9.49d?0.001 9d,std=6.1 dB |
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