Signal transmission method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsXu LI, Jingjing HUANG, Yibo LV, Junping ZHANG
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Abstract
The method includes: obtaining 2N first signals and 2N−1 second signals, where the first signal and the second signal each include M signal points, a signal value, at an even location, of the signal point of the first signal is 0, a signal value, at an odd location or an even location, of the signal point of the second signal is 0, N is a positive integer, and M is a positive even number; performing inverse fast Fourier transform IFFT, inverse Fourier transform IFT, fast Fourier transform FFT, or Fourier transform FT on the 2N first signals and the 2N−1 second signals to determine 2N third signals and 2N−1 fourth signals.
Claims19
A signal transmission method, comprising:
- obtaining 2N first signals and 2N−1 second signals, wherein each of the first signals comprises M signal points, a signal value, at an even location, of the M signal points of the first signal is 0, each of the second signals comprises M signal points, a signal value, at an odd location or an even location, of the M signal points of the second signal is 0, N is a positive integer, and M is a positive even number;
- performing inverse fast Fourier transform (IFFT), inverse Fourier transform (IFT), fast Fourier transform (FFT), or Fourier transform (FT) on the 2N first signals and the 2N−1 second signals to determine 2N third signals and 2N−1 fourth signals, wherein each of the third signals comprises M signal points, and each of the fourth signals comprises M signal points;
- determining a fifth signal based on the 2N third signals and the 2N−1 fourth signals, wherein the fifth signal comprises M*2N signal points;
- and
- sending the fifth signal.
A signal transmission method, comprising:
- obtaining a fifth signal comprising M*2N signal points, wherein N is a positive integer, and M is a positive even number;
- and
- performing at least one of following operations on the fifth signal to determine 2N first signals and 2N−1 second signals, wherein each of the first signals comprises M signal points, a signal value, at an even location, of the M signal points of the first signal is 0, each of the second signals comprises M signal points, a signal value, at an odd location or an even location, of the M signal points of the second signal is 0, and the operations comprises:
- inverse fast Fourier transform (IFFT), inverse Fourier transform (IFT), fast Fourier transform (FFT), or Fourier transform (FT).
A signal transmission apparatus, comprising:
- a processor;
- and
- a memory couple to the processor to store instructions, which when executed by the processor, cause the apparatus to perform operations, the operations comprising:
- obtaining a fifth signal comprising M*2N signal points,
- wherein N is a positive integer, and M is a positive even number;
- and
- performing at least one of following operations on the fifth signal to determine 2N first signals and 2N−1 second signals, wherein each of the first signals comprises M signal points, a signal value, at an even location, of the M signal points of the first signal is 0, each of the second signals comprises M signal points, a signal value, at an odd location or an even location, of the M signal points of the second signal is 0, and the operations comprises:
- inverse fast Fourier transform (IFFT), inverse Fourier transform (IFT), fast Fourier transform (FFT), or Fourier transform (FT).
Dependencies are inferred from the claim text.