UWB对IEEE802.11a WLAN的电磁干扰分析  

Coexistence between UWB and IEEE802.11a WLAN System

作　　者：于学禹[1] 邹卫霞[1] 周正[1] 

机构地区：[1]北京邮电大学无线网络实验室,北京100876

出　　处：《无线电工程》2007年第11期40-42,61,共4页Radio Engineering

基　　金：国家自然科学基金资助项目(60372097;60432040;60572020);北京市自然科学基金资助项目(4052021);教育部博士点基金项目(20060013008);韩国仁荷大学IT研究中心项目(INHAUWB-ITRC)。

摘　　要：在FCC模板和ECC模板的基础上,分析了室内环境下UWB设备对IEEE802.11a WLAN系统的电磁干扰。在IEEE802.11a系统性能恶化1dB的情况下,使用双线模型分别计算出室内环境下单个UWB设备和多个UWB设备的发射功率限制。分析结果表明,对于IEEE802.11a WLAN来说,距离最近的UWB干扰是最主要的干扰,建议以36cm的最小隔离距离为基础来限制5GHz频段处的UWB发射功率。因此ECC模板更能满足IEEE802.11a的电磁兼容要求,而FCC模板能否保证有待进一步研究。According to current FCC and ECC regulations, the electromagnetic interference from UWB devices to IEEE 802.11 a WLAN system in indoor environments has been studied. Assuming an SINR degradation of 1 dB, the maximum possible UWB transmissions density for single UWB device and multiple UWB devices were calculated based on the two-slope propagation model. The analysis results show that the closest UWB device is the primary interference source for the IEEE 802.11 a device, so the emission limits from UWB devices should be established on the basis of 36 centimeter distance. The analysis results also show that ECC regulation is better than FCC regulation.

关 键 词：UWB IEEE802.11A 干扰 电磁兼容 

分 类 号：TN911.4[电子电信—通信与信息系统]