Optimization of Wireless Communication Coverage in Underground Tunnels Based on Zone Division

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Polarization</td><td class="align_center">Position of C</td><td class="align_center">Position of CC</td><td class="align_center">Position of CO</td><td class="align_center">Position of WC</td><td class="align_center">Position of WW</td></tr><tr><td class="align_left" colspan="6"><hr/></td></tr><tr><td class="align_left">Horizontal</td><td class="align_center">0</td><td class="align_center">269.94</td><td class="align_center">268.08</td><td class="align_center">79.09</td><td class="align_center">79.28</td></tr><tr><td class="align_left" colspan="6"><hr/></td></tr><tr><td class="align_left">Vertical</td><td class="align_center">0</td><td class="align_center">25.03</td><td class="align_center">293.29</td><td class="align_center">307.97</td><td class="align_center">308.70</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Maximum boundary for horizontal polarization modes and vertical polarization modes at 900 MHz frequency in the wide tunnel (in m).</div>

International Journal of Antennas and Propagation

tab6

Table 6

Table 6: Optimization of Wireless Communication Coverage in Underground Tunnels Based on Zone Division 