Experimental Evaluation of Interference from MB-OFDM UWB Systems to Narrowband Wireless Digital Transmission Systems

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Multi-band orthogonal frequency-division multipleaccess (MB-OFDM) is one of the UWB technologies that realize wireless personal network (WPAN). In this paper, we experimentally investigated the interference from MBOFDM signal to narrowband QPSK digital transmission system. The bit error rate (BER) performance of the narrowband QPSK system under the interference of UWB signal was evaluated, assuming the white Gaussian noise (AWGN) channel. The experimental results show a curve with BER degradation characteristics. The difference of the BER degradation characteristics according to the modulation parameter of the signal is discussed.
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