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Multipath interference elimination method, signal demodulation method, system and device

A multi-path interference and signal demodulation technology, applied in the field of communication, can solve problems with high complexity

Pending Publication Date: 2021-01-08
SMART SHINE MICROELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the principle of Viterbi demodulation, assuming that the modulation index is h, the order is M, and the correlation length is L, under the condition of no multipath, the number of states is 2M L / h, if the number of multipaths is P, the number of states is 2M (L+P) / h, the complexity is quite high, and increases exponentially as the number of paths increases

Method used

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  • Multipath interference elimination method, signal demodulation method, system and device
  • Multipath interference elimination method, signal demodulation method, system and device
  • Multipath interference elimination method, signal demodulation method, system and device

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Embodiment 1

[0087] An embodiment of the present invention provides a method for eliminating multipath interference. The method for eliminating multipath interference includes: performing multipath channel combination on a received signal; demodulating the multipath channel combination signal to obtain demodulation source bits; modulating the demodulation The source bit is the re-modulated transmission signal; the interference signal corresponding to each path channel is reconstructed according to the corresponding received signal and the received signal of the re-modulated transmission signal in each path channel; the interference signal is eliminated by the interference signal. The multipath interference of the sampled signal of the received signal in each path channel.

[0088] On the basis of the multipath interference cancellation method, an embodiment of the present invention also provides a signal demodulation method. The signal demodulation method includes: eliminating the multipath...

Embodiment 2

[0164] The embodiment of the present invention and Embodiment 1 belong to the same inventive concept. The embodiment of the present invention provides a signal demodulation system, and the signal demodulation system includes:

[0165] The multipath channel combining module is used for multipath channel combining on the received signal; the demodulation modulation module is used for demodulating the multipath channel combined signal to obtain demodulation source bits; the demodulation and modulation module is also used for modulating The demodulation source bits are the re-modulated transmission signal; the interference reconstruction module is configured to reconstruct the corresponding received signal in each path channel according to the re-modulated transmission signal in each path channel and the received signal, and reconstruct corresponding to each path channel The interference signal; the interference cancellation module is used to cancel the multipath interference of th...

Embodiment 3

[0169] The embodiment of the present invention and Embodiments 1 and 2 all belong to the same inventive concept. The embodiment of the present invention provides a signal demodulation device, and the signal demodulation device includes:

[0170] a delay sampling unit, configured to output the sampled signals of the received signal in each path channel according to the received signal;

[0171] a demodulation unit for outputting demodulation bits according to the sampled signal and the generated phase;

[0172] a remodulation unit for selectively receiving the demodulated bits and outputting a remodulated transmission signal;

[0173] an interference reconstruction unit, configured to output an interference signal according to the remodulated transmission signal and the channel response of each path channel;

[0174] The demodulation unit is further configured to output a signal after multipath interference cancellation according to the interference signal and the sampled sign...

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Abstract

The invention provides a multipath interference elimination method, and a signal demodulation method, system and device, and belongs to the technical field of communication. The method comprises the following steps: performing multipath channel combination on a received signal; demodulating the signals combined by the multipath channels to obtain demodulation source bits; modulating the demodulation source bit into a re-modulated sending signal; reconstructing an interference signal corresponding to each path channel according to the corresponding receiving signal of the re-modulated sending signal in each path channel and the receiving signal; and eliminating the multipath interference of the sampled signal of the received signal in each path channel through the interference signal. The method and the device are used for realizing signal demodulation of multipath channel interference elimination.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a multipath interference elimination method, a signal demodulation method, a method for determining multipath channel interference metrics, a signal demodulation system, a signal demodulation device, An electronic device, a receiver, and a computer-readable storage medium. Background technique [0002] Communication technology has been the most concerned topic in the Internet of Things industry in the past few years. It is the core link in the Internet of Things industry, and it is irreplaceable. products and industry applications. [0003] The wireless communication technologies of the Industrial Internet of Things are mainly divided into two categories: one is ZigBee, Wi-Fi, Bluetooth and other short-distance communication technologies. The other is LPWAN (low-power Wide-Area Network), that is, low-power wide-area network communication technology. [0004] GFS...

Claims

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Application Information

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IPC IPC(8): H04B1/711H04L25/03
CPCH04B1/711H04L25/03082
Inventor 王鑫杨贵亮陆会贤
Owner SMART SHINE MICROELECTRONICS TECH CO LTD
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