基于漏泄电缆的井下CDMA无线覆盖技术

针对采用天线作为CDMA无线通信系统覆盖设备时存在信号绕射及穿透能力较差,在弯曲度及高低起伏大的巷道无法保证无线信号的覆盖距离及信号质量,无法随意增大矿用CDMA基站发射功率来满足无线覆盖要求的问题,提出了一种利用漏泄电缆进行井下CDMA无线信号覆盖的解决方案。该方案中,井下CDMA基站输出的射频信号通过二功分器连接到漏泄电缆,可实现巷道的无线信号覆盖。实际应用表明,采用该方案信号覆盖稳定,通信效果良好。

Wireless Coverage Technology of Underground CDMA System Based on Leakage Cable

For problems of signal diffraction and bad penetrating ability when using antenna as coverage equipment of CDMA wireless communication system,no way to ensure coverage distance and signal quality of wireless signal in entry with large bending degree and ups and downs,no way to freely improve emitting power of mine-used CDMA base station to meet requirement of wireless signal coverage,a solution of underground CDMA wireless signal coverage with leakage cable was proposed.RF signal output by underground CDMA base station can be connected to leakage cable through two-way power divider and realize coverage of wireless signal of entry.The practical application showed that the signal coverage is stable and communication effect is good by use of the scheme.