  Signal processing techniques will lean on blind methods in the near future,
where no redundant, resource allocating information will be transmitted through
the channel. To achieve a proper decision, however, it is essential to know at
least the probability density function (pdf), which to estimate is classically
a time consumption and/or less accurate hard task, that may make decisions to
fail. This paper describes the design of a quantum assisted pdf estimation
method also by an example, which promises to achieve the exact pdf by proper
setting of parameters in a very fast way.
