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Interference signal generation method and device

A technology of interference signal and generation method, which is applied in the field of communication, can solve the problems of long processing time from interference to interference, poor interference effect, and failure of communication link to achieve interference effect, etc., to achieve enhanced delay extension capability, interference The effect of the enhanced effect

Pending Publication Date: 2020-10-20
HUNAN NOVASKY ELECTRONICS TECH
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Problems solved by technology

Traditional interference methods generally use white noise or frequency sweep sources to interfere with communication links, which cannot achieve ideal interference effects on communication links using OFDM
For example, the white noise source directly amplifies and emits Gaussian noise, and its interference effect is poor for a communication link with a wide frequency band; the DDS source uses dynamic scanning to make the center frequency of the interference change periodically with time, although it can be Interference is implemented on a wider frequency band, but the processing time from the beginning of interference to the interference is longer, so its applicability and interference efficiency are not ideal

Method used

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  • Interference signal generation method and device
  • Interference signal generation method and device

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0054] Such as figure 1 As shown, the interference signal generation method of this embodiment includes steps:

[0055] 1) The data stream is symbol-modulated and mapped into a baseband modulated signal;

[0056] 2) Through serial-to-parallel conversion, the single-channel signal is converted into N-channel parallel OFDM signals;

[0057] 3) Complete the digital processing of the baseband signal of the OFDM signal through N-point modulation transformation, modulate the data into a plurality of mutually orthogonal subcarriers, and obtain the modulated OFDM signal;

[0058] 4) Through parallel-to-serial conversion, the modulated OFDM signal is sent to the channel for transmission to form an interference signal.

[0059] The interference signal generation method of the present invention converts high-speed single-channel data into several relat...

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Abstract

The invention discloses an interference signal generation method and device, belongs to the technical field of communication, and is used for solving the technical problems of poor interference effectand long processing time of an interference source at present, and the method comprises the following steps: carrying out symbol modulation mapping on a data stream to form a baseband modulation signal; converting a single-path signal into N paths of parallel OFDM signals through serial-parallel conversion; completing baseband signal digital processing of the OFDM signal through N-point modulation transformation, and modulating the data to a plurality of mutually orthogonal subcarriers to obtain a modulated OFDM signal; and sending the modulated OFDM signal to a channel for transmission through parallel-serial conversion to form an interference signal. The interference signal generation method and device have the advantages of being high in interference capacity, good in flexibility, short in processing time and the like.

Description

technical field [0001] The present invention mainly relates to the technical field of communication, in particular to a method and device for generating an interference signal. Background technique [0002] With the enhancement of people's demand for communication data, broadband, mobility and high speed, Orthogonal Frequency Division Multiplexing (OFDM) technology is more and more applied to the field of wireless communication. Therefore, it is very important to study the communication interference for OFDM technology to improve the interference effect in an all-round way. Traditional interference methods generally use white noise or frequency sweep sources to interfere with communication links, which cannot achieve ideal interference effects on communication links using OFDM. For example, the white noise source directly amplifies and emits Gaussian noise, and its interference effect is poor for a communication link with a wide frequency band; the DDS source uses dynamic s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2691
Inventor 吴方来李征易浩韩乃军韩明华
Owner HUNAN NOVASKY ELECTRONICS TECH
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