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Signal processing method of wireless communication system, terminal equipment and network equipment

A wireless communication system and signal processing technology, applied in the field of communication, can solve problems such as inability to realize detection

Active Publication Date: 2020-04-07
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

However, we know that the time-domain expansion of the transmitted symbols is performed at the input of the DFT. After DFT processing, each DFT output will contain the information of all DFT inputs, which makes it impossible to construct only the same transmitted data signal into a waiting In the detection vector, it is impossible to achieve block-based detection or code-based detection

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  • Signal processing method of wireless communication system, terminal equipment and network equipment
  • Signal processing method of wireless communication system, terminal equipment and network equipment
  • Signal processing method of wireless communication system, terminal equipment and network equipment

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Embodiment Construction

[0107] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0108] The background technology of the embodiments of the present invention is introduced below.

[0109] Under the cyclic prefix (Cyclic Prefix Orthogonal Frequency Division Multiple, CP-OFDM) waveform, spread spectrum is performed at the transmitting end, that is, at the input end of IFFT, a symbol (such as a modulation symbol) is multiplied by a spreading code to become several symbols, Mapped to the input of the IFFT. When performing detection, after FFT is performed on the received signal, the same signal multiplied by the spreading code is constructed into a vector, and the vector is input into the detector (such as MMSE), and each time the detector input vector has only o...

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Abstract

The invention discloses a signal processing method of a wireless communication system, terminal equipment and network equipment, which are used for optimizing detection performance based on DFT-s-OFDMA. The signal processing method of the wireless communication system comprises the following steps: spreading a modulated signal, and carrying out discrete Fourier transform (DFT) processing on the spread signal; and mapping the signal after DFT processing to the input of discrete inverse Fourier transform expansion, performing inverse fast Fourier transform IFFT processing, and sending the processed signal to a receiving end.

Description

[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on September 28, 2018, with the application number 201811143468.0 and the application name "A signal processing method, terminal equipment and network equipment for a wireless communication system", all of which The contents are incorporated by reference in this application. technical field [0002] The present invention relates to the field of communication technology, in particular to a signal processing method, terminal equipment and network equipment of a wireless communication system. Background technique [0003] An Orthogonal Frequency Division Multiplexing (OFDM) scheme or an Orthogonal Frequency Division Multiple Access (OFDMA) scheme is used to transmit data in wired and / or wireless channels. [0004] The OFDMA transmitter uses modulation technology to map the data stream, and maps the data stream from M subcarriers to N subcarriers, and performs zero ...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L1/00
CPCH04L27/2636H04L27/265H04L1/0071
Inventor 赵铮林祥利任斌邢艳萍高秋彬康绍莉
Owner DATANG MOBILE COMM EQUIP CO LTD
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