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5.9 GHz Vehicular Channels Comparisons Between Two Traffic Status for Dense Urban Area
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作者 Fang Li Wei Chen +6 位作者 yishui shui Lida Xu Junyi Yul Changzhen Li Kun Yang Fuxing Chang Yi Liu 《China Communications》 SCIE CSCD 2018年第4期58-71,共14页
This study focused on differences in vehicle-to-vehicle radio channel character- istics in the same region but different traffic density and speeds at 5.9 GHz (congestion and non-congestion). The continuous measurem... This study focused on differences in vehicle-to-vehicle radio channel character- istics in the same region but different traffic density and speeds at 5.9 GHz (congestion and non-congestion). The continuous measurement campaign was conducted on a city expressway through the complex dense urban area in Wu- hart, China. Small-scale channel characteris- tics including power delay profile, amplitude fading distribution, K-factor, delay spread and Doppler shift were obtained, respectively. Spe- cifically, the cumulative distribution function of root mean square delay spreads and root mean square Doppler spreads in the non-con- gested scenario and congested scenario were all fitted well with Lognormal distribution. We also found out that different intensity of traffic and speed of vehicles have little effect on root mean square delay spreads, but have a big im- pact on root mean square Doppler spreads and level crossing rate. According to estimation outcomes, the V2V channel characteristics for urban areas in Chinese big city were differ- ent from the previous measured results under similar scenarios in Europe. Delay spread and level crossing rate in this study can provide significant references to design the wireless communication system for vehicle-to-vehicle channel. 展开更多
关键词 channel estimation vehicularchannels PDP small-scale fading Dopplerspread.
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