Pengda Huang

3 Questions 3 Answers 0 Followers

Questions related from Pengda Huang

Is there any conclusion on whether a symmetric matrix with zero diagonal entries is positive definite or not?

Say A=B*B^H (^H means conjugate transition) C=A - (diagonal of A). So C is a symmetric matrix which diagonal entries are all 0. I wondering whether there is any study on how to judge C is...

28 November 2015 3,544 11 View

What is closed form of the determinant of finite order covariance matrix?

We have known that the asymptotic determinant of the covariance matrix when its order goes to infinity. I am wondering whether there is the close form in the finite case? Thanks,

20 November 2014 8,975 3 View

How does the sampling period affect the spectrum of the sampled white Gaussian process?

n(t) is white Gaussian process. T1 and T2 are the periods at which n(t) is sampled, N1=n(m \cdot T1), N2=n(m \cdot T2). S1(f) and S2(f) are the spectrum of N1 and N2 respectively. What is the...

29 August 2014 7,032 1 View