Analysis and modeling of 2.3 GHz near-ground channel based on broadband channel measurements

The increasing interest that has been drawn to wireless sensor network technology is therefore required accurate analysis and modeling of wide band near-ground channel in all relevant environments and scenarios. Key characteristics of near-ground channels are low antenna height, short communication range, the dominated line-of-sight component and the reflection of the ground. Using slippage correlation algorithm, six typical indoor and outdoor scenarios are first analyzed to compare the system performances in 2.28-2.32 GHz, with antenna height and scenario as only variables. This paper first presents comprehensive analyzed results of the statistical channel properties, including both the small-scale and large-scale fading parameters. In particular, channel impulse response, power delay profile, the RMS delay spread, the mean delay, the number of discrete multipath components are extracted, evaluated and reported. The proposed path loss model is applicable to different scenarios and benefits link budget of the system. Furthermore, the relationship between channel attenuation and antenna height, as well as the specific impact on channel characteristics by different scenarios are concluded. All these results promote the evaluation and verification of near-ground wideband communication systems.