Expected Values of Scalar-Valued Functions of a Complex Wishart Matrix

Autor: Daya K. Nagar, Alejandro Roldán-Correa, Saralees Nadarajah
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Mathematics, Vol 11, Iss 9, p 2162 (2023)
Druh dokumentu: article
ISSN: 2227-7390
DOI: 10.3390/math11092162
Popis: The complex Wishart distribution has ample applications in science and engineering. In this paper, we give explicit expressions for E(tr(Wh))g(tr(Wj))i and E(tr(W−h))g(tr(W−j))i, respectively, for particular values of g, h, i, j, g+h+i+j≤5, where W follows a complex Wishart distribution. For specific values of g, h, i, j, we first write (tr(Wh))g(tr(Wj))i and (tr(W−h))g(tr(W−j))i in terms of zonal polynomials and then by using results on integration evaluate resulting expressions. Several expected values of matrix-valued functions of a complex Wishart matrix have also been derived.
Databáze: Directory of Open Access Journals
Nepřihlášeným uživatelům se plný text nezobrazuje