Signal sending method, device, and system

A signal receiving method, comprising:

• determining, by a user equipment (UE), a first demodulation scheme and a second demodulation scheme, wherein the first modulation scheme is a single-carrier modulation scheme;
• receiving, by the UE, a signal from a base station;
• demodulating, by the UE, the signal by using the first demodulation scheme and the second demodulation scheme to obtain signaling carried in a control channel and data carried in a traffic channel, wherein the control channel and the traffic channel are multiplexed using time division multiplexing, frequency division multiplexing, or space division multiplexing;
• wherein when the signal further comprises a second signal of another UE, and before demodulating, by the UE, the signal by using the first demodulation scheme and the second demodulation scheme, the method further comprises:
• using, by the UE, a multiple access manner of Time Division Multiple Access (TDMA) to obtain, from the signal and the second signal, a third signal of the UE;
• and
• wherein demodulating, by the UE, the signal of the UE by using the first demodulation scheme and the second demodulation scheme comprises:
• demodulating, by the UE, the third signal of the UE by using the first demodulation scheme and the second demodulation scheme.

A device, comprising:

• a processor;
• and
• a storage medium coupled to the processor and for storing programming instructions which, when executed by the processor, cause the device to:
• modulate, by using a first modulation scheme, signaling carried in a control channel, and modulate, by using a second modulation scheme, data carried in a traffic channel, wherein the first modulation scheme is a single-carrier modulation scheme,
• use a multiple access technique of Time Division Multiple Access (TDMA) to combine a first signal and a third signal of a user equipment (UE) and a second signal of another UE, and
• send a signal obtained after modulation, wherein the control channel and the traffic channel of each of the first, second, and third signals are multiplexed using time division multiplexing, frequency division multiplexing, or space division multiplexing, and wherein the signal comprises the first signal, the second signal, and the third signal.

A device, comprising:

• a processor;
• and
• a storage medium coupled to the processor and for storing programming instructions which, when executed by the processor, cause the device to:
• determine a first demodulation scheme and a second demodulation scheme, wherein the first modulation scheme is a single-carrier modulation scheme,
• receive a signal from a base station,
• demodulate the signal by using the first demodulation scheme and the second demodulation scheme to obtain signaling carried in a control channel and data carried in a traffic channel, wherein the control channel and the traffic channel are multiplexed using time division multiplexing, frequency division multiplexing, or space division multiplexing,
• wherein when the signal further comprises a second signal of another UE, and before demodulating the signal by using the first demodulation scheme and the second demodulation scheme, the programming instructions, when executed by the processor, cause the device to:
• use a multiple access manner of Time Division Multiple Access (TDMA) to obtain, from the signal and the second signal, a third signal, and
• wherein to demodulate the signal, the programming instructions, when executed by the processor, cause the device to demodulate the third signal by using the first demodulation scheme and the second demodulation scheme.