Simplified Calculating Simulation of Fourth-Order Cumulants
Guanlin Zhou · Jisuanji fangzhen · 2009
As a mass of computing capacity,higher-order cumulant is not widely uesd.So it will better exert its superiority when computing is optimized and algorithm is simplified.According to the fourth-order cumulant precise recurrence estimated formula of nonstationary random process,the paper presents an approximate cumulative estimated theorem of fourth-order cumulant,which is derived from reducing estimating computing capacity of fourth-order cumulant and enhancing the practicality of fourth-order cumulant project.As far as the updating factor of fourth-order cumulant statisfies the theorem's conditions,computing capacity will be reduced significantly,moreover estimated fourth-order cumulant keeps the capability of inhibiting gaussian noise.The paper also puts forward the optimization and simulation of fifth-order cumulant,based on fourth-order cumulant's optimization.The simulation is carried out in time domain and frequency domain,the result confirms the validity of this estimation.