A terminal, comprising: an antenna; a local area network, LAN,-wireless communication module, coupled with the antenna; and an application processor, coupled with the LAN-wireless communication module; wherein the LAN-wireless communication module comprises a received-signal processing circuit and a transmitted-signal processing circuit; wherein the received-signal processing circuit comprises a demodulation circuit module, a receiver, and an external low-noise filter, and wherein the demodulation circuit module is coupled with the receiver, the receiver is coupled with the external low-noise filter, and the external low-noise filter is coupled with the antenna; and the external low-noise filter is operable in the operation mode, the operation mode is configured for implementing an enhanced signal-reception function in the LAN, and the enhanced signal-reception function has an effective transmission distance greater than the preset distance; wherein the transmitted-signal processing circuit comprises a modulation circuit module, a transmitter, and an external power amplifier, and wherein the application processor is coupled with the modulation circuit module and the demodulation circuit module, the modulation circuit module is coupled with the transmitter, the transmitter is coupled with the external power amplifier, and the external power amplifier is coupled with the antenna; and the external power amplifier is operable in the operation mode, the operation mode is configured for implementing an enhanced signal-transmission function in the LAN, and the enhanced signal-transmission function has an effective transmission distance greater than the preset distance; the LAN-wireless communication module being operable in an operation mode, wherein when the LAN-wireless communication module operates in the operation mode, the terminal is configured to transmit a signal via the external power amplifier and receive the signal via the external low-noise filter of the LAN-wireless communication module; the terminal being configured to implement an enhanced signal transmission-reception function in LAN and a signal transmitted by the terminal having an effective transmission distance greater than a preset distance, when the LAN-wireless communication module operates in the operation mode. an antenna; a local area network, LAN,-wireless communication module, coupled with the antenna; and an application processor, coupled with the LAN-wireless communication module; wherein the LAN-wireless communication module comprises a received-signal processing circuit and a transmitted-signal processing circuit; wherein the received-signal processing circuit comprises a demodulation circuit module, a receiver, and an external low-noise filter, and wherein the demodulation circuit module is coupled with the receiver, the receiver is coupled with the external low-noise filter, and the external low-noise filter is coupled with the antenna; and the external low-noise filter is operable in the operation mode, the operation mode is configured for implementing an enhanced signal-reception function in the LAN, and the enhanced signal-reception function has an effective transmission distance greater than the preset distance; wherein the transmitted-signal processing circuit comprises a modulation circuit module, a transmitter, and an external power amplifier, and wherein the application processor is coupled with the modulation circuit module and the demodulation circuit module, the modulation circuit module is coupled with the transmitter, the transmitter is coupled with the external power amplifier, and the external power amplifier is coupled with the antenna; and the external power amplifier is operable in the operation mode, the operation mode is configured for implementing an enhanced signal-transmission function in the LAN, and the enhanced signal-transmission function has an effective transmission distance greater than the preset distance; the LAN-wireless communication module being operable in an operation mode, wherein when the LAN-wireless communication module operates in the operation mode, the terminal is configured to transmit a signal via the external power amplifier and receive the signal via the external low-noise filter of the LAN-wireless communication module; the terminal being configured to implement an enhanced signal transmission-reception function in LAN and a signal transmitted by the terminal having an effective transmission distance greater than a preset distance, when the LAN-wireless communication module operates in the operation mode.