Radio Wave Interference Test Method for Wireless Communication System by Opened Parallel Wired Cell
Radio Wave Interference Test Method for Wireless Communication System by Opened Parallel Wired Cell
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开放式并行有线小区无线通信系统的无线电波干扰测试方法
DOI：
10.1093/ietcom/e88-b.8.3242
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
M. Kitora
中科院分区：
文献类型：
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作者：
M. Tokuda;K. Ichikawa;Y. Honma;M. Kitora
研究了利用开放的PW小区作为宽频谱干扰源对IEEE802.11b到IEEE802.11g的干扰测试方法，明确了IEEE802.11g的吞吐量仅针对频谱与IEEE802.11g几乎不重叠的IEEE802.11b Ch.4信号波作为干扰波，几乎不受IEEE802.11b的干扰，但是作为干扰波的从Ch.5到Ch.8的所有其它信道的吞吐量受到干扰并且降低到2 Mbps以下。通过与IEC 61000-4-3规定的常规辐射射频电磁场抗扰度试验进行比较，可以看出常规抗扰度试验无法模拟IEEE802.11b到IEEE802.11g的干扰现象。接下来，我们尝试对作为干扰源的无线LAN IEEE 802.11b执行蓝牙的干扰测试。结果表明，蓝牙的吞吐量随着干扰波电平的增加而降低，并且对于对应于Ch.7（2442 ± 10 MHz）的干扰波，EUT（从设备）与蓝牙主设备之间的通信中断。然而，在由IEC 61000-4-3规定的传统抗扰度测试中，蓝牙的吞吐量不影响与IEEE 802.11b上的信道上的带宽的中心频率相对应的所有干扰波。因此，无线局域网和蓝牙需要开发新的辐射抗扰度测试方法，该方法具有宽带宽的干扰波。
We have studied on the interference test method from IEEE802.11b to IEEE802.11g as an interference source with wide band spectrum by using the opened PW cell, and it is clear that the throughput of IEEE802.1 Ig for only IEEE802.11b Ch.4 signal wave as the interference wave, whose frequency spectrum is almost not overlapping with IEEE802.11g, is almost not interfered by IEEE802.11b, but the throughputs for all other channels from Ch.5 to Ch.8 as the interference wave are interfered and decrease to below 2 Mbps. By comparing with conventional radiated RF electromagnetic field immunity test specified by IEC 61000-4-3, it is clear that the conventional immunity test cannot simulate the interference phenomena from IEEE802.11b to IEEE802.11g. Next, we tried to perform the interference test of the Bluetooth against the wireless LAN IEEE 802.11b as a disturbance source. As a result, it is revealed that the throughput of Bluetooth decreases according to increasing the interference wave level, and communication between EUT (slave) and the master of Bluetooth is interrupted for the interference wave corresponding to Ch.7 (2442 ± 10MHz). However, in the conventional immunity test specified by 1IEC 61000-4-3, the throughput of the Bluetooth does not affect for the all disturbance waves corresponding to the center frequency of bandwidth on the cannel on IEEE802.11b. Therefore, it is needed for the wireless LAN and the Bluetooth to develop new radiated immunity test method, which has the disturbance wave with wide bandwidth.