Human body shadowing variability in short-range indoor radio links at 3-11 GHz band

摘要

Measurement results for human body shadowing and local environmental effects in short-range indoor radio channels arc presented. A narrowband measurement system, comprising a signal generator, two identical triangular monopoles and a spectrum analyser, was used in the measurements. When the radio link was periodically blocked by a human body with various objects in and around the link, fading depths;of up to 15 dB and even more were observed at spot frequencies of 3-11 GHz band. Standard deviation and its range for human body blockage are estimated for different radio link scenarios simulating real environments. The distribution of human body shadowing was analysed and compared with known distribution functions.