Research Article
Diversity Performance of Multiantenna Systems for UMTS Cellular Phones in Different Propagation Environments
Table 1
Propagation models used to evaluate
the performance of the antenna systems.
| Model | Elevation/ azimut | Uniform (isotropic) | Gaussian/uniform | Laplacian/uniform | Elliptical |
| Statistical
distributions | | | | | | | | | | | | | | | | | | | | | | | | |
High directivity (1/8 of the sphere)
| | | | | | | | | | | | | | | | | | | |
Low directivity (1/2 of the sphere)
| | | | | | | | | | | | | | | | | | | | |
| Scenario parameters | | | XPR = 5 dB | XPR = 5 dB | | | | | | | Indoor | | | | XPR = 5.5 dB | | | | | = 0.29 | | | | | = 1.06 | | | XPR = 1 dB | XPR = 1 dB | = 0.44 | | | | | = 1.18 | Outdoor | | | | = 0.16 | | | | | = 0.70 | | | | | = 0.11 | | | XPR = 0 dB | XPR = 0 dB | | | | | | | Isotropic* | | | | | | | | | | | | | | |
|
|
*For
Gaussian/uniform and Laplacian/uniform, the isotropic environment is an
omnidirectionnal isotropic environment.
|