Effects of Traffic and Local Movements on Multipath Characteristics of an Indoor Radio Channel

Introduction: Multipath propagation characteristics for indoor radio channels has recently attracted tremendous attention. There have been attempts to study the statistics of the multipath spread and to model the indoor radio channel.’-5 The effects of short time variations in the delay spread and power, caused by human traffic around a transmitter and receiver, has not yet been thoroughly investigated. Such variations are of importance in digital communication systems. Measurements taken to determine the short time changes in the RMS delay spread and the received power are reported. The variations are caused by local traffic close to the terminals and local movements of the terminals in the indoor radio channel. The issue of Doppler spread and the narrowband received power caused by such local disturbances are addressed in Reference 6.