摘要
基于无线通信的列车控制系统一般采用IEEE802.11g标准无线局域网实现数据传输。根据IEEE802.11g标准的OFDM调制方式并结合其11个无线信道频率特性,研究不同信道间的频率重叠干扰情况,计算得到信道间干扰因子。然后在一应用场景中分析信道干扰对设备接收信号质量的影响,可为设计信道分配方案提供参考。
CBTC（Communication-Based Train Control） usually employs the IEEE802.11g WLAN to implement its data communication.This paper simulates the overlapping effect and makes a quantitative analysis to the overlapping factors among the 11 wireless channels according to the characteristics of OFDM modulation and channel frequencies assigned by IEEE802.11g startdard.Then the impact of overlapping effect among channels is assessed on the received signal quality in a scene for evaluation.
出处
《计算机工程与应用》
CSCD
北大核心
2009年第25期228-230,共3页
Computer Engineering and Applications
基金
国家自然科学基金No.60521002
上海-应用材料研究与发展基金No.07SA02~~
