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A method and equipment for receiving an orthogonal frequency division multiplexing OFDM signal

An orthogonal frequency division and signal receiving technology, applied in the field of communication, can solve the problems of occupying more resources, reducing efficiency, and complex signal processing process.

Inactive Publication Date: 2019-05-31
DEEPBLUE TECH (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and equipment for receiving OFDM signals of orthogonal frequency division multiplexing, which solves the problem that the signal processing process is complicated, occupies a lot of resources, and has high computational complexity when receiving OFDM signals using an OFDM baseband system, resulting in reduced efficiency. question

Method used

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  • A method and equipment for receiving an orthogonal frequency division multiplexing OFDM signal
  • A method and equipment for receiving an orthogonal frequency division multiplexing OFDM signal
  • A method and equipment for receiving an orthogonal frequency division multiplexing OFDM signal

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Embodiment 1

[0074] The present invention provides a method for receiving orthogonal frequency division multiplexing OFDM signals, such as figure 1 As shown, the specific process is as follows:

[0075] In a first aspect, the present application provides a method for receiving an orthogonal frequency division multiplexing OFDM signal, the method comprising:

[0076] Step 101, receiving an OFDM signal with a cyclic prefix of a preset cyclic length;

[0077] Step 102, using the OFDM reception model pre-built based on the deep learning network, remove the cyclic prefix of the above OFDM signal, remove the cyclic prefix of the above OFDM signal in sequence, perform inverse Fourier transform, channel estimation and channel equalization, and demodulate into The corresponding quadrature amplitude modulated QAM signal is output.

[0078] Among them, using the OFDM receiving model pre-built based on the deep learning network, the cyclic prefix of the above OFDM signal is removed, and the OFDM sig...

Embodiment 2

[0160] like Figure 4 As shown, based on the same inventive concept, this embodiment provides an orthogonal frequency division multiplexing OFDM signal receiving device, which is characterized in that the device includes a processor 401 and a memory 402, wherein the memory 402 stores an executable program. When the executable program is executed, the processor 401 implements the following process:

[0161] receiving an OFDM signal with a cyclic prefix of a preset cyclic length;

[0162] Using the pre-built OFDM receiving model based on the deep learning network, the cyclic prefix of the above OFDM signal is removed, Fourier inverse transform, channel estimation and channel equalization are performed in sequence, and then the corresponding quadrature amplitude modulation QAM signal is demodulated and output.

[0163] As an optional implementation manner, the above-mentioned processor is specifically configured to input the real part and the imaginary part of the complex number...

Embodiment 3

[0205] This embodiment provides a computer storage medium, where a computer program is stored in the computer storage medium, and when the computer program is executed, the methods described in the first to third embodiments are implemented.

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Abstract

The invention discloses a method and equipment for receiving an orthogonal frequency division multiplexing (OFDM) signal, RELATING TO COMMUNICATION TECHNOLOGY. The method and the device are used for solving the problem that when an OFDM baseband system is used for receiving OFDM signals, signal processing process is complex, the occupied resources are more, the calculation complexity is higher andefficiency is low. The method comprises the following steps of: receiving an OFDM signal including a cyclic prefix of a preset cyclic length, and sequentially removing the cyclic prefix of the OFDM signal by using an OFDM receiving model pre-constructed based on a deep learning network, carrying out inverse Fourier transform, channel estimation and channel equalization, demodulating into a corresponding quadrature amplitude modulation (QAM) signal, and outputting the quadrature amplitude modulation (QAM) signal.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and equipment for receiving OFDM signals of Orthogonal Frequency Division Multiplexing. Background technique [0002] A current Orthogonal Frequency Division Multiplexing (OFDM) baseband system includes a signal transmitting end and a receiving end. At the sending end, the information bits are modulated by QAM (Quadrature Amplitude Modulation) (including QPSK, 16QAM, 64QAM, 256QAM, etc.), and then transformed into time-domain signals by Fast Fourier Inverse Transform (FFT). Serial-to-parallel conversion, insertion of cyclic prefix, modulation onto the carrier, and transmission through the wireless channel. At the receiving end, the OFDM signal containing the cyclic prefix is ​​received, demodulated to the baseband channel, sampled, then removed from the cyclic prefix, serial-to-parallel inverse conversion, and then fast Fourier (FFT) inverse transform, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L27/38
Inventor 陈海波
Owner DEEPBLUE TECH (SHANGHAI) CO LTD
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