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Filter demodulation method and receiver

A filter demodulation and receiver technology, applied in transmission systems, electrical components, etc., can solve the problems of low reliability of demodulated data and high bit error rate, and achieve the effect of reducing bit error rate and improving reliability.

Active Publication Date: 2019-05-28
SHANGHAI FUDAN MICROELECTRONICS GROUP
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AI Technical Summary

Problems solved by technology

[0004] However, the reliability of the demodulated data obtained by the existing filter demodulation method is low, and the bit error rate is high

Method used

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  • Filter demodulation method and receiver
  • Filter demodulation method and receiver
  • Filter demodulation method and receiver

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Embodiment Construction

[0021] When a traditional receiver demodulates a received signal, it first filters the received signal and then demodulates the filtered signal. refer to figure 1 , presents an existing receiver demodulation system.

[0022] After receiving the radio frequency sampling signal, the receiver first filters the radio frequency sampling signal through the filter 101. The filter 101 can be any one of low-pass filter, high-pass filter, Wiener filter, matched filter and the like. After the radio frequency sampling signal is filtered, the demodulation unit 102 demodulates the filtered radio frequency sampling signal to generate baseband data and send it to the baseband processor for processing.

[0023] However, in the prior art, the receiver only uses one type of filter to perform filtering processing on the radio frequency sampling signal, that is, the filter can only perform a single type of filtering processing on the radio frequency sampling signal. For example, if the filter is...

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Abstract

The present invention provides a filtering demodulation method and a receiver. The method comprises: receiving radio frequency signals; performing different N types of filtering for the radio frequency signals, and obtaining different N filtering signals; performing demodulation of the different N filtering signals, and obtaining different N demodulation signals; and selecting effective demodulation signals from different N demodulation signals, and selecting one demodulation signal from the effective demodulation signals as a target demodulation signal. According to the scheme, the credibility of data demodulation can be effectively improved.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a filter demodulation method and a receiver. Background technique [0002] Modulation refers to the conversion of various digital baseband signals into digital modulation signals suitable for channel transmission, that is, the use of baseband signals to control the change of one or several parameters of the carrier signal, and the information load on the modulated signal transmission. Demodulation is the reverse process of modulation, which recovers the original baseband signal from the parameter change of the modulated signal. [0003] When a traditional receiver demodulates a received signal, it first filters the received signal and then demodulates the filtered signal. [0004] However, the reliability of the demodulated data obtained by the existing filter demodulation method is low, and the bit error rate is high. Contents of the invention [0005] The technical pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16
CPCH04B1/16
Inventor 李夏禹陆继承赵晓冬王椿珊张幸幸
Owner SHANGHAI FUDAN MICROELECTRONICS GROUP