Signal sending method, signal receiving method, and communication apparatus

A method, comprising:

• determining, by a first device, a first signal and a second signal;
• and
• sending, by the first device, the first signal to a second device on a first frequency domain unit comprising a first segment of one or more contiguous frequency domain resources, and sending the second signal on a second frequency domain unit comprising a second segment of one or more contiguous frequency domain resources, wherein the first frequency domain unit comprises a first frequency domain resource at a first frequency, the second frequency domain unit comprises a second frequency domain resource at a second frequency, and an absolute value of a difference between the first frequency and the second frequency is related to one or more of the following:
• a first bandwidth, a second bandwidth, or a third bandwidth, wherein the first bandwidth is a bandwidth occupied by the first frequency domain unit in a frequency domain, the second bandwidth is a bandwidth occupied by the second frequency domain unit in the frequency domain, the third bandwidth is a bandwidth occupied by a third frequency domain unit in the frequency domain, the third frequency domain unit is useable by the first device to send a third signal to a third device, and the first signal, the second signal, and the third signal are in one operating band.

A first communication apparatus, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor and having program instructions stored thereon which, when executed by the at least one processor, cause the communication apparatus to:
• determine a first signal and a second signal;
• and
• send the first signal to a second communication apparatus on a first frequency domain unit comprising a first segment of one or more contiguous frequency domain resources, and send the second signal on a second frequency domain unit comprising a second segment of one or more contiguous frequency domain resources, wherein the first frequency domain unit comprises a first frequency domain resource at a first frequency, the second frequency domain unit comprises a second frequency domain resource at a second frequency, and an absolute value of a difference between the first frequency and the second frequency is related to one or more of the following:
• a first bandwidth, a second bandwidth, or a third bandwidth, wherein the first bandwidth is a bandwidth occupied by the first frequency domain unit in a frequency domain, the second bandwidth is a bandwidth occupied by the second frequency domain unit in the frequency domain, the third bandwidth is a bandwidth occupied by a third frequency domain unit in the frequency domain, the third frequency domain unit is useable by the first communication apparatus to send a third signal to a third communication apparatus, and the first signal, the second signal, and the third signal are in one operating band.

A communication apparatus, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor and having program instructions stored thereon which, when executed by the at least one processor, cause the communication apparatus to:
• receive a first signal and a second signal through envelope detection, wherein the first signal and the second signal are in one operating band;
• and
• obtain a target signal, wherein a frequency of a frequency domain resource that carries the target signal is a frequency domain resource at a frequency that is an absolute value of a difference between a first frequency of a frequency domain resource that carries the first signal and a second frequency of a frequency domain resource that carries the second signal.