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A line-of-sight (LOS) signal propagation experiment in frequency domain is performed under a typical short-range indoor environment for wireless sensor networks (WSN) applications. In the measurement, the signals have nominal center frequency of 5.8GHz. Based on measured datum, cumulative distribution of RMS delay spread is modeled as approximately normal distribution. Then, a multi-path fading channel model is proposed and compared with other models having specific statistical distributions. It is observed that the proposed model agrees quite well with the Nakagami channel model. The proposed model should be an effective, short range fading model for indoor wireless sensor networks and Internet of Things applications.