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Signal processing method, device and system

A signal processing and signal technology, applied in the field of communications, can solve the problems of the receiver being unable to receive control information reliably and the transmission performance of the control information being poor, so as to achieve the effect of reliable reception and improved transmission performance.

Active Publication Date: 2021-07-13
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem in the related art that the receiver cannot reliably receive the control information and the transmission performance of the control information is poor, the present invention provides a signal processing method, device and system

Method used

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  • Signal processing method, device and system
  • Signal processing method, device and system
  • Signal processing method, device and system

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Embodiment Construction

[0066]The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0067] figure 1 It is a schematic diagram of the implementation environment involved in the present invention, including a transmitter 10 and a receiver 20, the transmitter 10 sends a wireless communication signal to the receiver 20, and the receiver 20 processes the received wireless communication signal to obtain effective control information and Data information. The signal processing method and device provided by the present invention are used in the receiver 20 .

[0068] The present invention is aimed at the parallel transmission of up to eight channels, so the receiver first needs to separate the data of the eight parallel channels from the received signal, and then each channel independently runs algorithms such as frequency domain synchronization, signal detection and demodulation.

[006...

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Abstract

The invention discloses a signal processing method, device and system, and belongs to the technical field of communication. The method comprises the following steps: performing time-frequency domain synchronization processing on a wireless communication signal sent by a transmitter to obtain a first signal; performing channel estimation and equalization processing on the first signal to obtain a second signal; extracting a third signal and a fourth signal from the second signal; performing QPSK soft de-mapping, symbol de-interleaving, 1 / 2 viterbi decoding, descrambling and CRC decoding processing on the third signal in sequence to obtain corresponding control information; and performing 1024 QAM soft demapping, LDPC decoding, de-interleaving, descrambling and CRC decoding processing on the fourth signal in sequence to obtain corresponding data information. According to the method, the receiver can reliably receive the control information, so that the transmission performance of the control information is improved, and the method can be used for high-order QAM.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a signal processing method, device and system. Background technique [0002] With the development of modern communication technology, especially the rapid development of mobile communication technology, the issue of frequency band utilization has attracted more and more attention. Today, when spectrum resources are very limited, the capacity of traditional communication systems can no longer meet the requirements of current users. Quadrature Amplitude Modulation (QAM) has become an important technical solution for broadband wireless access and wireless video communication due to its advantages of high spectrum utilization and high power spectral density. [0003] In the related art, for high-order QAM, the receiver cannot reliably receive the control information when receiving the signal sent by the transmitter, and the transmission performance of the control i...

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Application Information

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IPC IPC(8): H04L27/38H04L27/22H04L1/00
CPCH04L27/38H04L27/22H04L1/0054
Inventor 常迎辉刘长龙李斌杜明刘朋杨振学
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP