Adjusted ITS Model of Wideband HF Channel Based on Anchor-points Fitting

Models play an important role in the implementation of simulation systems.The Power delay profile(PDP) of ITS model can't fit all kinds of channel well and its computational complexity is large.An adjusted ITS model was proposed that aimed at solving problems mentioned above.The effectivity and validity of the adjusted model were proved below.Anchor-Point was defined.Firstly,the key anchor-points of PDP were locked and then the other points on the PDP were fitted according to the specific distribution.Anchor-points fitting shortens the time for solving the channel model parameter,and is able to fit a variety of PDP distribution of HF channel.Simulation results verify the validity of adjusted model.Adjusted ITS model fit the real channel well with small computational complexity,and can be applied to wideband HF simulation system effectively.