Research Article
Optimization of Wireless Communication Coverage in Underground Tunnels Based on Zone Division
Table 8
List of coverage schemes for comparison.
| Coverage scheme | Description |
| Strategy-H [11, 13] | Coverage without zone division; use the horizontally polarized antennas | Strategy-V [12] | Coverage without zone division; use the vertically polarized antennas | Strategy-MM | Coverage with zone division by using MM | Strategy-SM | Coverage with zone division by using SM | Strategy-FBP | Coverage with zone division by using FBP [16ā20] | Strategy-SI-H | Coverage with zone division by using SI [21, 22]; SI is performed based on the horizontally polarized field | Strategy-SI-V | Coverage with zone division by using SI [21, 22]; SI is performed based on the vertically polarized field |
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