One of the several challenges for high capacity wireless communications is to find propagation models able to predict as easily and accurately as possible the propagation channel to assess the performance of wide-band wireless systems. An investigation of simple propagation models using detailed point cloud topographical data available in Switzerland is conducted. Our point cloud based predictions are compared to measurements in 2 ways: wide band impulse response at VHF in hilly terrain and 5GHz-WiFi outdoor picocell connectivity. The preliminary results contribute to the assessment of the potential, but also the current limitations of using precise maps but simple propagation models to predict measurements.