Actual measurements of the influence of fading and multipath on HF radio communication I'm looking for papers or books that contain actual measurements of the influence one has to expect in HF radio communication. I'm interested in this, because i've simulated the influence of a physical channel using the Watterson Model on the detection performance of a feature-based approach. The approach is not robust for the parameters I've picked. Now I'm interested in how realistic the Watterson parametrzation I've picked is.
For you information and the sake of completeness, the parameters I picked:

The information I'm gathering serves the purpose of anwering the question:
Is it just the average case of distortion that is to be expected in HF communication or is it a more challening scenario.
EDIT:
PSK,QAM and FSK signals were tested. The bandwidth was between 100 and 1000 Hz.The parametrization was chosen for the frequency range of 3kHZ to 30 MHz.
Matlab have in his comm toolbox some scripts dedicated to HF ionospheric channel simulation, check it out