The Effect of Narrowband Interference on Wideband Wireless Communication Systems This paper evaluates the performance of wideband communication systems in the presence of narrowband interference. In particular, we derive closed bit-error probability expressions for spread-spectrum systems by approximating narrowband interferers as independent asynchronous tone interferers. The scenarios considered include additive white Gaussian noise channels, flat-fading channels, and frequency-selective multipath fading channels. For multipath fading channels, we develop a new analytical framework based on perturbation theory to analyze the performance of a Rake receiver in Nakagami-$m$channels. Simulation results for narrowband interference such as GSM and Bluetooth are in good agreement with our analytical results, showing the approach developed is useful for investigating the coexistence of ultrawide bandwidth systems with existing wireless systems.
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机译：窄带干扰对宽带无线通信系统的影响本文评估了在存在窄带干扰的情况下宽带通信系统的性能。尤其是，我们通过将窄带干扰源近似为独立的异步音频干扰源，来得出扩频系统的封闭误码概率表达式。所考虑的场景包括加性高斯白噪声信道，平坦衰落信道和频率选择多径衰落信道。对于多径衰落信道，我们开发了一种基于扰动理论的新分析框架，以分析Nakagami- $ m $信道中Rake接收机的性能。诸如GSM和蓝牙之类的窄带干扰的仿真结果与我们的分析结果非常吻合，表明开发出的方法可用于研究超宽带系统与现有无线系统的共存。
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