Patent ID: 11955996
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. An apparatus, comprising:
a baseband processing apparatus comprising:
a baseband chip configured to pass a wireless local area network (WLAN) analog baseband signal; and
a first signal processing chip comprising:
a first receiver configured to receive the WLAN analog baseband signal from the baseband chip;
an analog-to-digital converter (ADC) configured to convert the WLAN analog baseband signal into a first WLAN digital baseband signal;
one or more first processors configured to:
select, based on control information, a pre-equalization filter, wherein the pre-equalization filter is configured to compensate for wired transmission attenuation in a frequency domain; and
process the first WLAN digital baseband signal to obtain a WLAN analog intermediate frequency signal by performing, using the pre-equalization filter and based on cable length estimation information of a cable, pre-equalization on the WLAN digital baseband signal to compensate for the wired transmission attenuation by ensuring that a signal-to-noise ratio (SNR) of each signal in a frequency band meets a requirement; and

a first transmitter configured to:
communicatively couple to a radio frequency processing apparatus disposed remotely from the first signal processing chip through a wired connection between the first signal processing chip and the radio frequency processing apparatus; and
send the WLAN analog intermediate frequency signal to the radio frequency processing apparatus through the wired connection between the first signal processing chip and the radio frequency processing apparatus;

the radio frequency processing apparatus connected to the baseband processing apparatus and comprising:
a second signal processing chip comprising:
a second receiver configured to receive the WLAN analog intermediate frequency signal from the first transmitter;
one or more second processors configured to process the WLAN analog intermediate frequency signal to obtain a second WLAN digital baseband signal;
a second digital-to-analog converter (DAC) configured to convert the second WLAN digital baseband signal into a WLAN analog baseband signal; and
a second transmitter configured to send the WLAN analog baseband signal;

a radio frequency chip configured to convert the WLAN analog baseband signal into a WLAN radio frequency signal; and

an antenna coupled to the radio frequency processing apparatus and configured to transmit the WLAN radio frequency signal.