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Integrated waveform communication measurement system

A technology for measuring systems and waveform signals, applied in modulation carrier systems, transmission systems, wireless communications, etc., can solve problems such as low measurement accuracy

Active Publication Date: 2020-10-27
10TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] In order to overcome the shortcomings of existing signal waveforms and solve the problem of low measurement accuracy in the traditional OFDM waveform communication system, the present invention proposes an integrated system with high communication capacity, high-precision measurement, and flexible scheduling and measurement capabilities, as well as agile capabilities. Signal waveform, an integrated waveform communication measurement system that can adaptively adjust the waveform according to changes in the time-space characteristics of the spectrum to achieve efficient use of resources and solve the problem of low measurement accuracy in traditional OFDM waveform communication systems

Method used

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Embodiment Construction

[0018] refer to figure 1. In the preferred embodiment described below, an integrated waveform communication measurement system includes: a communication data generation module (1), a subcarrier mapping module (3), and an IFFT module (4) connected in series in communication subbands 1 to D ), add CP module (5), transmit subband filter (6) and measurement data generation module (2), spectrum shifting module (7), transmit subband filter ( 6), the sending end of the integrated waveform communication measurement system composed of a common-terminal phase combiner (14) and an antenna, respectively connects the receiving sub-band filter (8) and the demultiplexing sub-band filter (8) connected in series to the communication sub-bands 1 to D through the antenna. CP module (9), FFT module (10), signal detection / demodulation module (11) and multiple channels (measurement sub-bands 1-C) receiving sub-band filters (8) connected in series in sequence, down-conversion module (12 ), the rec...

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Abstract

The invention discloses an integrated waveform communication measurement system, and aims to provide a communication measurement system with high communication capacity and high-precision measurement.The method is realized through the following technical scheme: the method comprises the following steps that: frequency domain OFDM waveform signals are generated by all communication data generationmodules of a transmitting end and communication sub-bands 1-D; a subcarrier mapping module modulates the signals to different subband frequency domain positions through subcarrier mapping, and an IFFT module adds CP to the obtained time domain signals through a CP adding module to generate communication sub-band OFDM time domain signals; meanwhile, each measurement data generation module separately sends the time domain measurement waveform signals to the frequency spectrum shifting modules connected in series on each channel, modulates each time domain measurement waveform signal to different sub-band frequency domain positions, filters the same through each transmitting sub-band filter; and a combiner combines each filtered signal into one to realize the fusion of a communication waveform and a measurement waveform.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a waveform and system integrating communication and measurement. [0002] technical background [0003] Traditionally, it is generally believed that the signal characteristics of communication and radar detection are significantly different: on the one hand, the signals sent by radar detection waveforms are mostly regular known signals, which require excellent autocorrelation characteristics, large signal bandwidth, high The dynamic range can tolerate a large Doppler frequency deviation to estimate the speed of the moving target; on the other hand, the communication signal, no matter what modulation method is used, its waveform is random and uncertain, requiring high spectral efficiency. Except for frequency modulated signals, most are sensitive to Doppler frequency deviation. Therefore, how to solve the problem of the incommonness of the two types of signal wave...

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Application Information

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IPC IPC(8): H04W24/08H04L27/26
CPCH04W24/08H04L27/2601
Inventor 严平刘田张毅
Owner 10TH RES INST OF CETC
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