A physical wide-band propagation model for outdoor mobile radio communications

Abstract

This new work makes a physical wide-band propagation model for outdoor mobile radio communications. First, the narrow-band channel transfer function resulting in the narrow-band path loss is derived. It contains the diffraction as well as single and double reflections by local buildings in the vicinity of the mobile, the reflection by remote large buildings and that by distant mountain surfaces. Second, new refinements including a number of explicit form expressions to an existing method, experimentally confirmed, simulating wide-band radiowave propagation for rural environment are added, making it applicable here. This method using the narrow-band channel transfer function as an important element generates time domain path loss, wide-band path loss and relative power in frequency domain. In particular, the time domain path loss physically interprets and reasonably predicts the power delay profile. The presence of such and similar power delay profiles, as well as the frequency range span behaviour of relative power in frequency domain, has been confirmed by the exising wide-band propagation measurements. The wide-band path loss is in the order of the narrow-band path loss at the carrier frequency.