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CN-121984617-A - Communication system based on intelligent wave beam forming and dynamic spectrum sensing

CN121984617ACN 121984617 ACN121984617 ACN 121984617ACN-121984617-A

Abstract

The invention discloses a communication system based on intelligent beam forming and dynamic spectrum sensing, which relates to the technical field of communication and comprises a cognitive spectrum sensing module, a satellite-ground cooperative beam forming module, an edge intelligent control module and a self-adaptive communication receiving and transmitting module, wherein the cognitive spectrum sensing module enables the recognition accuracy of a cross-frequency band spectrum cavity to be improved to more than 92% through a spectrum sensing algorithm and an Attention-LSTM spectrum prediction model combining a depth residual network and cognitive cycle detection, the spectrum prediction advance is up to 2-8s, the spectrum utilization rate is improved to more than 50%, and an AI-driven self-adaptive communication mechanism and a joint optimization strategy enable the system to adapt to multi-scene requirements from urban dense coverage to polar region remote coverage, the communication rate is improved to more than 500Mbps, and the time delay is controlled to be less than 20ms so as to reach a 6G pre-research communication standard.

Inventors

  • SHAO WEN
  • WU QI
  • SHI RUIHUA

Assignees

  • 苏州工业职业技术学院

Dates

Publication Date
20260505
Application Date
20251208

Claims (8)

  1. 1. The communication system based on intelligent beam forming and dynamic spectrum sensing is characterized by comprising a cognitive spectrum sensing module, a satellite-ground cooperative beam forming module, an edge intelligent control module and an adaptive communication receiving and transmitting module, wherein the cognitive spectrum sensing module performs interference identification, cavity detection and feature extraction on full-band spectrum data in a communication environment through a wide-band signal acquisition and cognitive radio multidimensional analysis model to generate and output spectrum comprehensive information comprising real-time spectrum occupation states, interference signals, idle spectrum positions and bandwidth maps, the satellite-ground cooperative beam forming module receives control instructions of the edge intelligent control module, realizes cooperative adjustment of beam pointing, shape and power distribution through a beam parameter joint optimization algorithm based on the spectrum comprehensive information, and the edge intelligent control module generates a beam optimization instruction and a dynamic resource allocation strategy through a multi-target intelligent decision algorithm to realize low-delay data interaction and cooperative decision between the modules through the combination of the spectrum comprehensive information, the satellite-ground link dynamic parameters and the communication receiving and transmitting module, and transmitting the intelligent resource allocation strategy based on the beam optimization instruction and the intelligent resource allocation strategy.
  2. 2. The communication system based on intelligent beam forming and dynamic spectrum sensing according to claim 1 is characterized in that the cognitive spectrum sensing module comprises a broadband cognitive acquisition unit, an interference feature extraction unit and a spectrum decision unit, wherein the broadband cognitive acquisition unit adopts a multi-band compatible radio frequency chip to realize spectrum data acquisition of a frequency band of 1.8GHz-30GHz, the sampling rate is not lower than 120MSps, the interference feature extraction unit eliminates complex environment noise interference and extracts interference signal features through a depth residual network and adaptive noise cancellation combination algorithm, and the spectrum decision unit adopts a cognitive cycle detection algorithm to identify spectrum cavities and interference signal types to realize accurate positioning of idle spectrum.
  3. 3. The communication system based on intelligent beam forming and dynamic spectrum sensing according to claim 1, wherein the satellite-ground cooperative beam forming module comprises an intelligent reflecting surface integrated array unit, an on-satellite beam forming unit and a dynamic cooperative adjustment unit, the RIS integrated array unit adopts a K×L element heterogeneous planar array, K and L are positive integers not smaller than 8, 512 reconfigurable reflecting units are integrated, the on-satellite beam forming unit generates a beam forming weight matrix based on a beam parameter and resource allocation joint optimization algorithm, and the dynamic cooperative adjustment unit monitors signal-to-noise ratio, time delay and Doppler frequency offset of a communication link in real time and triggers rapid reconfiguration of the beam parameter when any link parameter is lower than a preset threshold.
  4. 4. The communication system based on intelligent beam forming and dynamic spectrum sensing according to claim 1, wherein the edge intelligent control module is internally provided with a heterogeneous multi-core embedded processor and an industrial real-time operating system, an air interface protocol of a 6G pre-grinding stage is adopted to realize microsecond data interaction with each module, and the edge intelligent control module further comprises an edge caching unit and a digital twin mapping unit which are used for caching spectrum history data, beam adjustment parameters and communication logs, the caching capacity is not lower than 32GB, and meanwhile, a system digital twin model auxiliary decision is constructed.
  5. 5. The communication system based on intelligent beam forming and dynamic spectrum sensing according to claim 1, wherein the adaptive communication transceiver module comprises an intelligent modem unit, a high-efficiency power amplifying unit and a link quality feedback unit, wherein the intelligent modem unit supports AI driving adaptive switching of QPSK, 64QAM and 256QAM in multiple modulation modes, the high-efficiency power amplifying unit adopts a gallium nitride device, the output power can be dynamically adjusted within the range of 0.8W-12W according to the beam gain and the communication distance, and the power conversion efficiency is not lower than 65%.
  6. 6. The communication system based on intelligent beam forming and dynamic spectrum sensing according to claim 2, wherein the spectrum decision unit further has spectrum situation prediction and pre-allocation functions, and based on a time sequence attention mechanism, the long-short-term memory neural network predicts the spectrum occupation state within 2-8s, the prediction accuracy is not lower than 95%, decision basis is provided for dynamic spectrum pre-allocation, and spectrum switching conflict is avoided.
  7. 7. The communication system based on intelligent beam forming and dynamic spectrum sensing according to claim 3, wherein the dynamic cooperative adjustment unit and the cognitive spectrum sensing module establish a distributed cooperative sensing mechanism, when a new narrowband interference signal is sensed to enter a communication frequency band, the cooperative adjustment of the beam null direction and the RIS reflection phase is completed within 30ms, the interference suppression ratio is not lower than 40dB, and meanwhile, the communication quality of a target link is kept stable.
  8. 8. The communication system based on intelligent beam forming and dynamic spectrum sensing according to claim 1, further comprising an intelligent energy management module, wherein the intelligent energy management module dynamically distributes power supply of each module in combination with satellite orbit prediction, solar incident angle calculation and communication load assessment, achieves power consumption reduction of more than 40% in a low-load scene, and maintains core function stability in a polar-rail shadow region through power scheduling.

Description

Communication system based on intelligent wave beam forming and dynamic spectrum sensing Technical Field The invention relates to the technical field of communication, in particular to a communication system based on intelligent beam forming and dynamic spectrum sensing. Background With the rapid development of mobile communication technology, the demands of users on communication speed, time delay and connection number are continuously increased, the problems of scarcity of spectrum resources and communication interference are increasingly highlighted, the intelligent beam forming technology can effectively improve link gain and anti-interference capability by focusing signal energy in a target direction, the dynamic spectrum sensing technology can detect idle spectrum resources in real time, high-efficiency multiplexing of spectrum is realized, and a communication system constructed by combining the two becomes a key technical direction for solving the current communication bottleneck. When the existing communication system based on beam forming and spectrum sensing works, the current communication frequency band is generally scanned by the spectrum sensing module, the spectrum occupation situation is acquired and then transmitted to the control unit, the control unit issues an adjustment instruction to the beam forming module according to spectrum information, the beam forming module optimizes beam parameters of an array antenna based on the instruction, and finally the communication transceiver module completes signal transmission by utilizing the optimized beam and the allocated spectrum resource, and all modules interact according to a fixed flow in the whole process, so that a real-time cooperation and self-adaptive adjustment mechanism is lacked. The prior art has a plurality of defects that firstly, a spectrum sensing module depends on a single frequency band detection and fixing algorithm, the recognition capability of cross-frequency band interference and burst interference is insufficient, the correlation analysis with satellite orbit dynamics is lacking, and the spectrum allocation is delayed from the link state change; the system comprises a beam forming module, a spectrum sensing and energy management module, a central control module and an energy management module, wherein the beam forming module is disjointed from the spectrum sensing and energy management module, parameter joint optimization is not realized, when a satellite enters a ground shadow area or encounters narrow-band interference, beam adjustment response is slow and power consumption is easy to increase, the central control module adopts a ground centralized architecture, the satellite processing capacity is weak, the requirement of low-orbit satellite millisecond-level link adjustment cannot be met, and the energy management is only dependent on simple load feedback, and is not combined with space environment parameters such as orbit, illumination and the like, so that the energy consumption optimization effect is limited. Disclosure of Invention The invention discloses a communication system based on intelligent beam forming and dynamic spectrum sensing, which is characterized in that a satellite-ground cooperative closed-loop framework of cognitive sensing, on-satellite intelligent decision-cooperative beam optimization and self-adaptive communication is constructed, and the problems of large satellite-ground time delay and weak autonomous capability of the existing system are solved by organically combining a cognitive spectrum sensing module, a satellite-ground cooperative beam forming module, an edge intelligent control module, a self-adaptive communication transceiver module and an intelligent energy management module, so that the cognitive multiplexing of spectrum resources, the on-satellite autonomous optimization of communication beams and the space self-adaptive regulation of system energy consumption are realized. The technical problems to be solved by the invention can be realized by the following technical scheme: The intelligent beam forming and dynamic spectrum sensing-based communication system comprises a cognitive spectrum sensing module, a satellite-ground cooperative beam forming module, an edge intelligent control module and a self-adaptive communication receiving and transmitting module, wherein the cognitive spectrum sensing module performs interference identification, cavity detection and feature extraction on full-frequency-band spectrum data in a communication environment through a wide-frequency-band signal acquisition and cognitive radio multidimensional analysis model to generate and output spectrum comprehensive information comprising real-time spectrum occupation states, interference signals, idle spectrum positions and bandwidth maps, the satellite-ground cooperative beam forming module receives control instructions of the edge intelligent control module, realizes cooperative adjustment of beam