Analysis of RF radiation interference on wireless communication systems

The effects of radiated RF interference on wireless communication systems are investigated. Noise source at the antenna input port induced by in-band external electromagnetic (EM) fields is determined based on full EM simulations of the communication systems. Signal bit error rate for a line-of-sight additive white Gaussian noise (AWGN) channel and for a nonline-of-sight Rayleigh channel as a function of the signal-to-noise ratio is used to determine the susceptibility of the systems subject to external power sources. Two specific examples are given, including a dongle for a wireless mouth and a PCMCIA card for a laptop computer.