This disclosure provides a base station in a wireless communication system. The base station comprises a field programmable gate array (FPGA) with an upper side and a bottom side, a thermoelectric cooler (TEC) with a hot side and a cold side, a thermal pad, and an anti-radiation cover. The cold side of TEC is thermally coupled with the upper side of the FPGA, the thermal pad is thermally coupled with the hot side of TEC, and the anti-radiation cover is thermally coupled with the thermal pad.