Patent ID: 11902073
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 14:
15. The apparatus according to claim 14, the operations further including:
performing inverse fast Fourier transform (IFFT) or fast Fourier transform FFT on the second signal, to obtain a ninth signal with N points,
wherein the fourth signal is obtained by:
setting negative parts of first N/2 points of the ninth signal to 0, or
setting positive parts of last N/2 points of the ninth signal to 0 and calculating an absolute value of negative parts of the last N/2 points of the ninth signal, and

wherein the fifth signal is obtained by:
setting positive parts of the first N/2 points of the ninth signal to 0 and calculating an absolute value of the negative parts of the first N/2 points of the ninth signal, or
setting negative parts of the last N/2 points of the ninth signal to 0.