Integrated Waveform Communication Measurement System
A measurement system and waveform signal technology, applied in the modulation carrier system, transmission system, wireless communication and other directions, can solve the problem of low measurement accuracy, achieve the effect of high ranging accuracy, reduce mutual interference, and ensure accuracy
Active Publication Date: 2022-07-29
10TH RES INST OF CETC
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Problems solved by technology
[0006] 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
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[0017] see 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) in which the communication subbands 1 to D are connected in series. ), add a CP module (5), a transmit subband filter (6), a measurement data generation module (2), a spectrum shift module (7), a transmit subband filter ( 6) The transmitting end of the integrated waveform communication measurement system composed of the common-end phase combiner (14) and the antenna, respectively, through the antennas are connected to the receiving subband filters (8) of the communication subbands 1 to D in series in series, and the A CP module (9), an FFT module (10), a signal detection / demodulation module (11), a receiving subband filter (8) and a down-conversion module (12) connected in series with multiple channels (measurement subbands 1 to C) in sequence ) a...
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An integrated waveform communication measurement system disclosed by the invention aims to provide a communication measurement system with both high communication capacity and high-precision measurement. The present invention is realized by the following technical solutions: at the transmitting end, each communication data generation module of communication sub-band 1 to communication sub-band D generates a frequency domain OFDM waveform signal, and the sub-carrier mapping module modulates to different sub-band frequencies through sub-carrier mapping In the domain position, the IFFT module adds CP to the obtained time domain signal by adding the CP module to generate the communication sub-band OFDM time domain signal; at the same time, each measurement data generation module sends the time domain measurement waveform signal to the serial connection on each channel. The spectrum shifting module modulates each channel of time-domain measurement waveform signals to different sub-band frequency-domain positions, and finally performs filtering processing through each channel of transmitting sub-band filters, and the combiner combines the filtered signals of each channel into one channel. Realize the fusion of communication waveform and measurement waveform.
Description
technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a communication and measurement integrated waveform and system. Background technique [0002] Traditionally, it is generally considered that the signal characteristics of communication and radar detection are significantly different: on the one hand, most of the signals sent by radar detection waveforms are regular known signals, which require excellent autocorrelation characteristics, large signal bandwidth, and high It can tolerate a large Doppler frequency offset to estimate the speed of moving targets; on the other hand, communication signals, no matter what modulation method is used, their waveforms are random and uncertain, and require high spectral efficiency. Except for frequency modulated signals, most are sensitive to Doppler frequency offset. Therefore, how to solve the problem of the incompatibility of the two types of signal waveforms of communicati...
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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