In the last few years, many measurements were made to . characterize indoor wide-band channels [1]-[4]. Based on the measurement results; we have some rough ideas about the path loss and rms delay spread values. in different indoor envirooments. However, more accurate signal prediction techniques are necessary to provide optimum capacity and maximum coverage for future indoor wireless communica...

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Spectrum sharing remains one of the most important goals for wireless communication systems. Exclusive use of spectrum has been a long-standing principle; it forces different systems or operators to use appropriate spectrum masks to avoid imposing harmful interference on each other. To decide the mask, an accurate prediction model of path loss is required. A lot of channel models have been prop...

This paper presents a simple calculation method for predicting the propagation path loss of radio wave passing through dielectric obstruction between transmitter (Tx) and receiver (Rx). In this paper, characteristics that is obstructed by concrete beam on ceiling in large indoor environment, such as those seen factories warehouses, are investigated. The frequency 920-MHz band, used Internet-of-...