CN115580324A - Receiving beam optimization diversity device based on two-dimensional information entropy - Google Patents
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Abstract
The invention discloses a receiving beam optimization diversity device based on two-dimensional information entropy, which comprises an array receiving antenna, an array receiving signal acquisition unit, a two-dimensional information entropy analyzer, a beam signal processing unit, a beam control unit, an optimization diversity receiving controller, an optimization receiving and frame synchronizing unit, a diversity receiving demodulation unit and a decoder. The invention uses a digital array receiving antenna to obtain a received multi-beam signal, adopts a two-dimensional information entropy analysis method to carry out correlation and information entropy analysis on the received multi-beam signal, extracts the maximum information entropy and the combined information entropy of the received signal through the two-dimensional information entropy to carry out optimization on the optimal beam combination, realizes the optimization diversity of the received beam, increases a diversity means, improves the equipment performance by 8dB, can be used for information transmission under an over-the-horizon fading channel, is particularly suitable for point-to-multipoint networking over-the-horizon communication, and supports two communication systems of TDD and FDD.
Description
Technical Field
The invention relates to the field of scattering communication, and particularly discloses a receiving beam optimization diversity device based on two-dimensional information entropy.
Background
In the scattering communication, the scattering communication has the advantages of long transmission distance, small time delay, stable and reliable channel, strong three-reactance capability and the like, and is a main military communication means. Currently, tropospheric scatter communications equipment using array antennas supports multi-beam transceiving for scatter networking communications; the scattering communication receiving signals have serious fading, the scattering communication equipment mainly adopts frequency diversity to resist fading at present, the diversity capability is weaker, the multi-beam transceiving advantages of the equipment are not fully exerted, and the performance can be further improved. Aiming at the defects of single anti-fading means and insufficient diversity of the existing scattering communication equipment using the array antenna, the invention provides a receiving beam optimization diversity device based on two-dimensional information entropy, which is suitable for two communication systems of TDD and FDD, wherein a two-dimensional information entropy analysis method is mainly adopted to carry out correlation and information entropy analysis on a receiving multi-beam signal, the maximum information entropy and merging information entropy of the receiving signal are extracted through the two-dimensional information entropy to carry out optimization on the optimal beam combination, the receiving beam optimization diversity is realized, the performance is improved by 8dB compared with the performance of the prior diversity receiving method, and the equipment performance is obviously improved.
Disclosure of Invention
The invention aims to realize the performance improvement of scattering communication equipment using an array antenna by a two-dimensional information entropy based receiving beam optimization diversity device. The invention adopts a two-dimensional information entropy analysis method to carry out correlation and information entropy analysis on the received multi-beam signals, extracts the maximum information entropy and the combined information entropy of the received signals through the two-dimensional information entropy to carry out optimization on the optimal beam combination, realizes the optimization diversity of the received beams, increases the diversity means, improves the equipment performance by 8dB, and is suitable for two communication systems of TDD and FDD.
The invention is realized by the following technical scheme:
a receiving beam optimization diversity device based on two-dimensional information entropy comprises an array receiving antenna, an array receiving signal acquisition unit, a two-dimensional information entropy analyzer, a beam signal processing unit, a beam control unit, an optimization diversity receiving controller, an optimization receiving and frame synchronizing unit, a diversity receiving demodulation unit and a decoder;
the received signal enters an array receiving antenna to complete the receiving of the array analog signal, and the analog signal is sent to an array receiving signal acquisition unit;
the beam control unit generates a beam control signal and a beam forming signal and respectively outputs the signals to the array receiving signal acquisition unit and the beam signal processing unit;
the array receiving signal acquisition unit performs analog-to-digital conversion on the receiving array analog signal according to the beam control signal to obtain a digital signal, and sends the digital signal to the beam signal processing unit;
the beam signal processing unit carries out digital beam forming processing on the digital signals of the receiving array according to the indication of the beam forming signals to obtain beam signals, and the beam signals are respectively sent to the two-dimensional information entropy analyzer and the preferred receiving and frame synchronizing unit;
the two-dimensional information entropy analyzer performs correlation and information entropy analysis on the beam signals, extracts two-dimensional information entropy matrix information of the received signals and sends the two-dimensional information entropy matrix information to the optimal diversity reception controller;
the optimal diversity reception controller obtains maximum information entropy beam information and maximum combined information entropy information by adopting a two-dimensional information entropy extraction, analysis and evaluation mode to obtain an optimal beam combination, and outputs a receiving beam optimal control signal to an optimal reception and frame synchronization unit;
the optimal receiving and frame synchronizing unit performs optimal selection on the received beam signals according to the received beam optimal control signals, performs frame matching on the optimal beam signals at the same time, realizes frame synchronization, obtains optimal receiving signals and outputs the optimal receiving signals to the diversity receiving and demodulating unit;
the diversity reception demodulation unit demodulates the optimized received signal, extracts the baseband signal from the carrier and sends the baseband signal to a decoder;
and the decoder completes the decoding of the baseband signal according to a decoding principle to finally obtain the service information.
Further, the two-dimensional information entropy analyzer comprises a beam signal preprocessor, an anti-multipath processor, a beam signal analysis controller, a correlation coefficient analyzer, an information entropy analyzer, a correlation matrix generator and a two-dimensional correlation information entropy matrix synthesizer;
the beam signal analysis controller is a control unit for signal analysis, is used for generating a preprocessing control signal, a correlation coefficient analysis control signal and an entropy analysis control signal of a beam signal, and respectively sends the preprocessing control signal, the correlation coefficient analysis control signal and the entropy analysis control signal to the beam signal preprocessor, the correlation coefficient analyzer and the information entropy analyzer;
the beam signals are sent into a two-dimensional information entropy analyzer and then enter a beam signal preprocessor, according to the preprocessing control signal, the beam signal preprocessor performs wave trapping, noise reduction and sequencing on the beam signals to obtain processed multi-beam signals and sequenced beam signals, and the processed multi-beam signals and the sequenced beam signals are respectively output to an anti-multipath processor and a correlation coefficient analyzer;
the anti-multipath processor eliminates multipath influence by adopting a signal autocorrelation matching method to obtain a multi-beam signal with multipath eliminated, and the multi-beam signal is output to the information entropy analyzer;
the correlation coefficient analyzer analyzes the control signal according to the correlation coefficient, performs correlation analysis on the sequenced beam signals to obtain the correlation coefficient of the beam, and outputs the correlation coefficient to the correlation matrix generator;
the correlation matrix generator carries out matrixing processing on the beam correlation coefficient, generates an information entropy analysis selection signal and multi-beam correlation matrix information, and respectively outputs the information entropy analysis selection signal and the multi-beam correlation matrix information to the information entropy analyzer and the two-dimensional correlation information entropy matrix synthesizer;
the information entropy analyzer analyzes and entropy-synthesizes the multi-beam signals and the correlation matrix signals after the multi-path elimination according to the information entropy analysis selection signals to obtain information entropy information of each beam, and outputs the information entropy information to the two-dimensional correlation information entropy matrix synthesizer;
and the two-dimensional correlation information entropy matrix synthesizer analyzes and synthesizes the information entropy of each wave beam according to the information of the multi-wave beam correlation matrix, obtains two-dimensional information entropy information and outputs the two-dimensional information entropy information to the optimal diversity reception controller.
Further, the preferred diversity reception controller comprises a two-dimensional information entropy extractor, a correlation coefficient deconstructor, a maximum information entropy extractor, a combined information entropy estimator, a correlation weighting coefficient generator and an optimal beam combination preference device;
the information of the two-dimensional information entropy matrix enters a two-dimensional information entropy extractor and a correlation coefficient constructor; the correlation coefficient constructor completes extraction, matching and alignment processing of the correlation coefficients of the entropy matrix information to obtain a correlation control signal and outputs the correlation control signal to the two-dimensional information entropy extractor, and meanwhile, the obtained correlation coefficient information is output to the correlation weighting coefficient generator;
the correlation weighting coefficient generator carries out high-order weighting processing on the correlation coefficient and outputs multi-beam entropy estimation weighting information to the combined information entropy estimator;
the two-dimensional information entropy extractor extracts and separates characteristic information entropy of the two-dimensional information entropy matrix information according to the related control information to obtain multi-beam two-dimensional information entropy, and the multi-beam two-dimensional information entropy is output to the maximum information entropy extractor and the combined information entropy estimator;
the maximum information entropy extractor compares the multi-beam two-dimensional information entropy, extracts maximum information entropy beam information and outputs the maximum information entropy beam information to the optimal beam combination optimizer;
the combining information entropy estimator performs weighting diversity combining on the multi-beam two-dimensional information entropy according to the multi-beam entropy estimation weighting information to obtain maximum combining information entropy information, and outputs the maximum combining information entropy information to the optimal beam combination optimizing device;
the optimal beam combination preferer carries out optimization on the maximum information entropy and the combined information entropy, compares the optimal beam combination to obtain a receiving beam optimization control signal, and guides the optimization receiving and frame synchronizing unit to realize the receiving beam optimization diversity.
Compared with the background technology, the invention has the following advantages:
1. the invention adopts the two-dimensional information entropy analyzer to carry out correlation and information entropy analysis on the received multi-beam signals, realizes the optimal diversity of the received beams, improves the performance of equipment by 8dB, and is suitable for two communication systems of FDD/TDD.
2. The invention adopts the optimal diversity reception controller to extract the maximum information entropy of the received signals from the two-dimensional information entropy and compare the combined information entropy with the optimal beam combination to complete the optimal reception beam selection, so that the diversity performance of the equipment is optimal, and the performance of the equipment is improved.
Drawings
FIG. 1 is an electrical schematic block diagram of the information transfer of the present invention;
FIG. 2 is an electrical schematic of the two-dimensional information entropy analyzer of the present invention;
fig. 3 is an electrical schematic of the preferred diversity reception controller of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is an electrical schematic block diagram of information transmission of the device, and the device comprises an array receiving antenna, an array receiving signal acquisition unit, a two-dimensional information entropy analyzer, a beam signal processing unit, a beam control unit, a preferred diversity receiving controller, a preferred receiving and frame synchronizing unit, a diversity receiving demodulation unit and a decoder.
The received signal enters an array receiving antenna to complete the receiving of the array analog signal, and the analog signal is sent to an array receiving signal acquisition unit; the beam control unit generates a beam control signal and a beam forming signal, the beam control signal is output to the array receiving signal acquisition unit, and the beam forming signal is output to the beam signal processing unit; the array receiving signal acquisition unit performs analog-to-digital conversion on the receiving array analog signal according to the beam control signal to obtain a digital signal, and sends the digital signal to the beam signal processing unit; the beam signal processing unit carries out digital beam forming processing on the digital signals of the receiving array according to the indication of the beam forming signals to obtain beam signals, and the beam signals are respectively sent to the two-dimensional information entropy analyzer and the optimal receiving and frame synchronizing unit; the two-dimensional information entropy analyzer is mainly used for carrying out correlation and information entropy analysis on the beam signals, extracting two-dimensional information entropy matrix information of the received signals and sending the two-dimensional information entropy matrix information into the optimal diversity reception controller; the optimal diversity reception controller obtains maximum information entropy beam information and maximum combined information entropy information by adopting a two-dimensional information entropy extraction analysis and evaluation technology to obtain an optimal beam combination, and outputs a receiving beam optimal control signal to an optimal reception and frame synchronization unit; the optimized receiving and frame synchronizing unit optimizes the received beam signals according to the received beam optimized control signals, and simultaneously performs frame matching on the optimized beam signals to realize frame synchronization, and obtains optimized received signals to be output to the diversity receiving and demodulating unit; the diversity reception demodulation unit demodulates the preferred received signal, namely extracts the baseband signal from the carrier wave and then sends the baseband signal to a decoder; and the decoder completes the decoding of the baseband signal according to a decoding principle to finally obtain the service information.
Fig. 2 is an electrical schematic diagram of a two-dimensional information entropy analyzer of the present apparatus, the two-dimensional information entropy analyzer includes a beam signal preprocessor, an anti-multipath processor, a beam signal analysis controller, a correlation coefficient analyzer, an information entropy analyzer, a correlation matrix generator, and a two-dimensional correlation information entropy matrix synthesizer; the beam signal analysis controller is a control unit for signal analysis and is used for generating a preprocessing control signal, a correlation coefficient analysis control signal and an entropy analysis control signal of a beam signal, wherein the preprocessing control signal is sent to a beam signal preprocessor, the correlation coefficient analysis control signal is sent to a correlation coefficient analyzer, and the entropy analysis control signal is sent to an information entropy analyzer; the wave beam signals are sent into a two-dimensional information entropy analyzer and then enter a wave beam signal preprocessor, according to a preprocessing control signal, the wave beam signal preprocessor mainly carries out wave trapping, noise reduction, sequencing and other processing on the wave beam signals, then processed multi-wave beam signals and sequenced wave beam signals are obtained, the multi-wave beam signals are output to an anti-multipath processor, and the sequenced wave beam signals are output to a correlation coefficient analyzer; the anti-multipath processor eliminates the multipath influence by adopting the autocorrelation matching of the signals to obtain multi-beam signals with the multipath eliminated and outputs the multi-beam signals to the information entropy analyzer; the correlation coefficient analyzer analyzes the control signal according to the correlation coefficient, performs correlation analysis on the sequenced beam signals to obtain the correlation coefficient of the beam, and outputs the correlation coefficient to the correlation matrix generator; the correlation matrix generator carries out matrixing processing on the wave beam correlation coefficient to generate an information entropy analysis selection signal and multi-beam correlation matrix information, the information entropy analysis selection signal is output to the information entropy analyzer, and the multi-beam correlation matrix information is output to the two-dimensional correlation information entropy matrix synthesizer; the information entropy analyzer analyzes and entropy-synthesizes the multi-beam signals and the correlation matrix signals after the multi-path elimination according to the information entropy analysis selection signals to obtain information entropy information of each beam, and outputs the information entropy information to the two-dimensional correlation information entropy matrix synthesizer; and the two-dimensional correlation information entropy matrix synthesizer analyzes and synthesizes the information entropy of each wave beam according to the multi-wave beam correlation matrix information to obtain two-dimensional information entropy information and outputs the two-dimensional information entropy information to the optimal diversity reception controller.
FIG. 3 is an electrical schematic diagram of a preferred diversity reception controller of the apparatus, the preferred diversity reception controller including a two-dimensional information entropy extractor, a correlation coefficient destructor, a maximum information entropy extractor, a combined information entropy estimator, a correlation weighting coefficient generator, and an optimal beam combination preferer; the information of the two-dimensional information entropy matrix enters a two-dimensional information entropy extractor and a correlation coefficient constructor; the correlation coefficient constructor completes the processing of extraction, matching, alignment and the like of the correlation coefficient of the entropy matrix information to obtain a correlation control signal and output the correlation control signal to the two-dimensional information entropy extractor, and simultaneously outputs the obtained correlation coefficient information to the correlation weighting coefficient generator; the correlation weighting coefficient generator carries out high-order weighting processing on the correlation coefficient and outputs multi-beam entropy estimation weighting information to the combined information entropy estimator; the two-dimensional information entropy extractor extracts and separates characteristic information entropy of the two-dimensional information entropy matrix information according to the related control information to obtain multi-beam two-dimensional information entropy, and the multi-beam two-dimensional information entropy is output to the maximum information entropy extractor and the combined information entropy estimator; the maximum information entropy extractor compares the two-dimensional information entropies of the multi-beam, extracts the maximum information entropy beam information and outputs the maximum information entropy beam information to the optimal beam combination optimizer; the combining information entropy estimator performs weighting diversity combining on the multi-beam two-dimensional information entropy according to the multi-beam entropy estimation weighting information to obtain maximum combining information entropy information, and outputs the maximum combining information entropy information to the optimal beam combination optimizing device; the optimal beam combination preferer carries out optimization on the maximum information entropy and the combined information entropy, compares the optimal beam combination to obtain a receiving beam optimization control signal, and guides the optimization receiving and frame synchronizing unit to realize the receiving beam optimization diversity.
The device is briefly based on the following principle:
the device adopts a two-dimensional information entropy analysis method to carry out correlation and information entropy analysis on the received multi-beam signals, extracts the maximum information entropy and the combined information entropy of the received signals through the two-dimensional information entropy to carry out optimization on the optimal beam combination, realizes the optimization diversity of the received beams, increases the diversity means, improves the equipment performance by 8dB, can be used for information transmission under an beyond-the-horizon fading channel, and is particularly suitable for point-to-multipoint networking beyond-the-horizon communication.
In a word, the invention uses a digital array receiving antenna to obtain a received multi-beam signal, adopts a two-dimensional information entropy analysis method to carry out correlation and information entropy analysis on the received multi-beam signal, extracts the maximum information entropy and the combined information entropy of the received signal through the two-dimensional information entropy to carry out optimization on the optimal beam combination, realizes the optimization diversity of the received beam, increases the diversity means, improves the performance of equipment by 8dB, can be used for information transmission under an over-the-horizon fading channel, is particularly suitable for point-to-multipoint networking over-the-horizon communication, and supports two communication systems of TDD and FDD.
Claims (3)
1. A receiving beam optimization diversity device based on two-dimensional information entropy is characterized in that: the system comprises an array receiving antenna, an array receiving signal acquisition unit, a two-dimensional information entropy analyzer, a beam signal processing unit, a beam control unit, a preferred diversity receiving controller, a preferred receiving and frame synchronizing unit, a diversity receiving demodulation unit and a decoder;
the received signal enters an array receiving antenna to complete the receiving of the array analog signal, and the analog signal is sent to an array receiving signal acquisition unit;
the beam control unit generates a beam control signal and a beam forming signal and respectively outputs the beam control signal and the beam forming signal to the array receiving signal acquisition unit and the beam signal processing unit;
the array receiving signal acquisition unit performs analog-to-digital conversion on the receiving array analog signal according to the beam control signal to obtain a digital signal, and sends the digital signal to the beam signal processing unit;
the beam signal processing unit carries out digital beam forming processing on the digital signals of the receiving array according to the indication of the beam forming signals to obtain beam signals, and the beam signals are respectively sent to the two-dimensional information entropy analyzer and the optimal receiving and frame synchronizing unit;
the two-dimensional information entropy analyzer performs correlation and information entropy analysis on the beam signals, extracts two-dimensional information entropy matrix information of the received signals and sends the two-dimensional information entropy matrix information to the optimal diversity reception controller;
the optimal diversity reception controller obtains maximum information entropy beam information and maximum combined information entropy information by adopting a two-dimensional information entropy extraction, analysis and evaluation mode to obtain an optimal beam combination, and outputs a receiving beam optimal control signal to an optimal reception and frame synchronization unit;
the optimal receiving and frame synchronizing unit performs optimal selection on the received beam signals according to the received beam optimal control signals, performs frame matching on the optimal beam signals at the same time, realizes frame synchronization, obtains optimal receiving signals and outputs the optimal receiving signals to the diversity receiving and demodulating unit;
the diversity reception demodulation unit demodulates the optimized received signal, extracts the baseband signal from the carrier and sends the baseband signal to a decoder;
and the decoder completes the decoding of the baseband signal according to a decoding principle to finally obtain the service information.
2. The receiving beam preference diversity apparatus based on the two-dimensional information entropy of claim 1, wherein: the two-dimensional information entropy analyzer comprises a beam signal preprocessor, an anti-multipath processor, a beam signal analysis controller, a correlation coefficient analyzer, an information entropy analyzer, a correlation matrix generator and a two-dimensional correlation information entropy matrix synthesizer;
the beam signal analysis controller is a control unit for signal analysis, is used for generating a preprocessing control signal, a correlation coefficient analysis control signal and an entropy analysis control signal of a beam signal, and respectively sends the preprocessing control signal, the correlation coefficient analysis control signal and the entropy analysis control signal to the beam signal preprocessor, the correlation coefficient analyzer and the information entropy analyzer;
the beam signals are sent into a two-dimensional information entropy analyzer and then enter a beam signal preprocessor, according to a preprocessing control signal, the beam signal preprocessor carries out wave trapping, noise reduction and sequencing on the beam signals to obtain processed multi-beam signals and sequenced beam signals, and the processed multi-beam signals and the sequenced beam signals are respectively output to an anti-multipath processor and a correlation coefficient analyzer;
the anti-multipath processor eliminates multipath influence by adopting a signal autocorrelation matching method to obtain a multi-beam signal with multipath eliminated, and the multi-beam signal is output to the information entropy analyzer;
the correlation coefficient analyzer analyzes the control signal according to the correlation coefficient, performs correlation analysis on the sequenced beam signals to obtain the correlation coefficient of the beam, and outputs the correlation coefficient to the correlation matrix generator;
the correlation matrix generator carries out matrixing processing on the beam correlation coefficient, generates an information entropy analysis selection signal and multi-beam correlation matrix information, and respectively outputs the information entropy analysis selection signal and the multi-beam correlation matrix information to the information entropy analyzer and the two-dimensional correlation information entropy matrix synthesizer;
the information entropy analyzer analyzes and entropy-synthesizes the multi-beam signals and the correlation matrix signals after the multi-path elimination according to the information entropy analysis selection signals to obtain information entropy information of each beam, and outputs the information entropy information to the two-dimensional correlation information entropy matrix synthesizer;
and the two-dimensional correlation information entropy matrix synthesizer analyzes and synthesizes the information entropy of each wave beam according to the multi-wave beam correlation matrix information to obtain two-dimensional information entropy information and outputs the two-dimensional information entropy information to the optimal diversity reception controller.
3. The device for receiving beam preference diversity based on two-dimensional information entropy of claim 1, wherein: the optimized diversity reception controller comprises a two-dimensional information entropy extractor, a correlation coefficient constructor, a maximum information entropy extractor, a combined information entropy estimator, a correlation weighting coefficient generator and an optimized beam combination optimizing device;
the information of the two-dimensional information entropy matrix enters a two-dimensional information entropy extractor and a correlation coefficient constructor; the correlation coefficient constructor completes extraction, matching and alignment processing of the correlation coefficients of the entropy matrix information to obtain a correlation control signal and outputs the correlation control signal to the two-dimensional information entropy extractor, and meanwhile, the obtained correlation coefficient information is output to the correlation weighting coefficient generator;
the correlation weighting coefficient generator carries out high-order weighting processing on the correlation coefficient and outputs multi-beam entropy estimation weighting information to the combined information entropy estimator;
the two-dimensional information entropy extractor extracts and separates characteristic information entropy of the two-dimensional information entropy matrix information according to the related control information to obtain multi-beam two-dimensional information entropy, and the multi-beam two-dimensional information entropy is output to the maximum information entropy extractor and the combined information entropy estimator;
the maximum information entropy extractor compares the multi-beam two-dimensional information entropy, extracts maximum information entropy beam information and outputs the maximum information entropy beam information to the optimal beam combination optimizer;
the combining information entropy estimator performs weighted diversity combining on the multi-beam two-dimensional information entropy according to the multi-beam entropy estimation weighting information to obtain maximum combining information entropy information, and outputs the maximum combining information entropy information to the optimal beam combination optimizing device;
the optimal beam combination preferer carries out optimization on the maximum information entropy and the combined information entropy, compares the optimal beam combination to obtain a receiving beam optimization control signal, and guides the optimization receiving and frame synchronizing unit to realize the receiving beam optimization diversity.
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