Ka-band Based Channel Modeling and Analysis in High Altitude Platform(HAP) System.

as the development of wireless communication system, high altitude platform(HAP) plays an important role in forwarding signal in the stratosphere and Ka-band attracts more and more attention because of larger transmission bandwidth. However, ka-band is more sensitive to the troposphere weathers. For Ka-band based HAP communication system, considering the scenario where the user moves over a large area and moves for a long time, the multi-states statistical channel model affected by the troposphere weathers and ground environment is proposed in this paper. Assuming that terrestrial terminal is in three scenarios, there are three state fading which are modeled by a Markov chain in each scenario. Firstly, the probability distribution function (PDF) of the received signal is analyzed; Secondly, a step-by-step methodology generating time-series of proposed channel model is presented; Finally, based on the proposed channel model, the time-series and the bit error rate (BER) performance are obtained.