Signal transmission method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsXu Li, Jingjing Huang, Junping Zhang
Life of this patent
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Abstract
This application provides a signal transmission method and apparatus. The method includes: obtaining, by a transmitter side, a first signal with N points; performing signal separation on the first signal with N points, to obtain two groups of signals (for example, a second signal with N points and a third signal with N points); combining the two groups of signals obtained through separation, to obtain a to-be-sent signal with 3N/2 points; and sending the signal with 3N/2 points to a receiver side, to enable the receiver to restore the first signal with N points from the received signal with 3N/2 points.
Claims20
A method, comprising:
- obtaining a first signal with N points, wherein N is a positive even number;
- determining a second signal with N points and a third signal with N points based on the first signal, wherein a fourth signal with N/2 points and a fifth signal with N/2 points are determined based on the second signal, and wherein a sixth signal with N/2 points and a seventh signal with N/2 points are determined based on the third signal;
- determining an eighth signal with 3N/2 points based on the fourth signal, the fifth signal, the sixth signal, and the seventh signal, wherein the eighth signal is an orthogonal frequency division multiplexing (OFDM) signal to be carried in an optical signal;
- and
- sending the eighth signal in the optical signal,
- wherein the second signal is obtained by setting a signal at an even location in the first signal to 0, and wherein the third signal is obtained by setting another signal at an odd location in the first signal to 0.
A method, comprising:
- obtaining an eighth signal with 3N/2 points, wherein the eighth signal is an orthogonal frequency division multiplexing (OFDM) signal carried in an optical signal, and wherein the eighth signal comprises three signals of an eleventh signal with N/2 points, a twelfth signal with N/2 points, a thirteenth signal with N/2 points, or a fourteenth signal with N/2 points;
- determining a signal from the eleventh signal, the twelfth signal, the thirteenth signal, and the fourteenth signal other than the three signals comprised in the eighth signal;
- and
- determining a first signal with N points based on the eleventh signal, the twelfth signal, the thirteenth signal, and the fourteenth signal,
- wherein N is a positive even number.
An apparatus, comprising:
- a processor, wherein the processor is coupled to a memory storing a computer instructions, that when executed by the processor, cause the apparatus to perform operations including:
- obtaining a first signal with N points, wherein N is a positive even number;
- determining a second signal with N points and a third signal with N points based on the first signal, wherein a fourth signal with N/2 points and a fifth signal with N/2 points are determined based on the second signal, and wherein a sixth signal with N/2 points and a seventh signal with N/2 points are determined based on the third signal;
- determining an eighth signal with 3N/2 points based on the fourth signal, the fifth signal, the sixth signal, and the seventh signal, wherein the eighth signal is an orthogonal frequency division multiplexing (OFDM) signal to be carried in an optical signal;
- and
- sending the eighth signal in the optical signal,
- wherein the second signal is obtained by setting a signal at an even location in the first signal to 0, and wherein the third signal is obtained by setting another signal at an odd location in the first signal to 0.
Dependencies are inferred from the claim text.