60-GHz channel characteristic interdependence investigation for M2M networks

In this paper, based on experimental channel measurements performed at 60 GHz in a typical indoor environment for both LOS and NLOS scenarios, the interdependencies of different channel parameters are investigated for different antenna configurations. Specifically, the channel characteristic interdependencies are examined by calculating correlation coefficients between number of paths, rms delay spread, Rice K-factor, and shadow fading. The results show that parameters in the LOS environment are highly correlated compared with the correlation coefficients in the NLOS case generally. In the LOS case, correlation coefficients are higher for horn-omni than horn-horn antenna configurations. It is found that negative correlation relationship exists between K-factor with parameters of number of paths, delay spread and shadow fading. A linear model of number of paths with delay spread, K-factor and shadow fading is established for predicting channel parameters from one another. The presented results can be used for design of wireless machine-to-machine (M2M) networks.