Clock synchronization method and communication apparatus

A communication apparatus, comprising a transceiver module, a splitter, a combiner, and a data processor, wherein

• the transceiver module is configured to receive a first multiplexed signal from a second apparatus, and output the first multiplexed signal to the splitter;
• the splitter is configured to demultiplex the first multiplexed signal to obtain a first data signal and a fourth analog clock signal, and output the fourth analog clock signal to the combiner;
• the combiner is configured to multiplex the fourth analog clock signal and a second data signal from the data processor to obtain a second multiplexed signal, and output the second multiplexed signal to the transceiver module;
• and
• the transceiver module is further configured to send the second multiplexed signal to the second apparatus.

A communication method, comprising:

• multiplexing a third analog clock signal and a first data signal to obtain a first multiplexed signal;
• sending the first multiplexed signal to a first apparatus;
• receiving a second multiplexed signal from the first apparatus;
• demultiplexing the second multiplexed signal to obtain a second data signal and a first analog clock signal, wherein the first analog clock signal corresponds to the third analog clock signal after the third analog clock signal has gone through a transmission delay;
• obtaining a first signal based on the first analog clock signal, wherein the first signal is a delay compensation amount or a second analog clock signal, and the second analog clock signal is obtained by applying delay compensation to the first analog clock signal;
• and
• processing data based on the first signal to obtain the first data signal, to which delay compensation has been applied.