Research Article

The Structure of Autocovariance Matrix of Discrete Time Subfractional Brownian Motion

Table 4

The time varying eigenvalues and corresponding eigenvectors of actual autocovariance matrices of dtsfBm with , , and .

Time varying eigenvalue Eigenvector

2 0.1 44.2
0.2106.5
0.3328.0
0.614864.9
0.756663.9
0.9ā€‰

3 0.165.2ā€‰
0.2159.1ā€‰
0.3491.5ā€‰
0.622303.1ā€‰
0.785024.5ā€‰
0.9ā€‰

4 0.186.2ā€‰
0.2211.6ā€‰
0.3654.9ā€‰
0.629745.5ā€‰
0.7ā€‰ā€‰
0.9ā€‰

5 0.1107.0ā€‰
0.2263.9ā€‰
0.3818.1ā€‰
0.637191.8ā€‰
0.7ā€‰ā€‰
0.9ā€‰

6 0.1127.7ā€‰
0.2316.1ā€‰
0.3981.2ā€‰
0.644642.2ā€‰
0.7ā€‰ā€‰
0.9ā€‰

7 0.1148.4ā€‰
0.2368.2ā€‰
0.31144.2ā€‰
0.652096.5ā€‰
0.7ā€‰ā€‰
0.9ā€‰

8 0.1169.0ā€‰
0.2420.3ā€‰
0.31307.1ā€‰
0.659554.7ā€‰
0.7ā€‰ā€‰
0.9ā€‰

9 0.1189.5ā€‰
0.2472.2ā€‰
0.31469.9ā€‰
0.667016.9ā€‰
0.7ā€‰ā€‰
0.9ā€‰