Delay spread measurements within a building at 2 GHz, 5 GHz and 17 GHz

Spectrum at microwave frequencies has been allocated within Europe and the United States for the evolving high bit rate wireless local area networking standards, namely ETSI HIPERLAN and FCC SUPERNET. This technology will also lead to other applications including the transmission of high quality digital video for wireless cameras. In order to design a radio-based high bit rate data transmission system the multipath time dispersion characteristics of the radio channel are an important consideration, and in particular, the RMS delay spread. Time domain measurements of RMS delay spread have previously been reported by other authors at frequencies up to 4 GHz. Frequency domain measurement systems have also been used to provide both time and frequency domain data including RMS delay spread, received power and coherence bandwidth. This paper presents new results for RMS delay spread measurements at the University of Wales Swansea