Key technologies and challenges of communication perception integration

【 pick   want 】 The integration of communication and perception will be 6G One of the hallmarks of , Synaesthesia integrated system refers to the sharing of spectrum in the same system 、 Hardware sharing 、 Signal sharing, etc , While transmitting information , Perceive the orientation of the target object 、 distance 、 Speed and other information , Or to the target object 、 Event or environment, etc 、 track 、 distinguish 、 Imaging, etc . Synaesthesia integration system is compared with communication and perception separation system , Can obtain fusion gain and cooperation gain . Firstly, the scenario and performance index of synaesthesia integration are introduced , Then it introduces the perception mode and perception process of synaesthesia integration , And synaesthesia integrated waveform design 、MIMO- Synaesthesia integration technology 、 Synaesthesia integration and backscatter and RIS Technology integration and other key technologies ; Finally, the performance evaluation index of synaesthesia integration is introduced 、 Channel modeling and simulation methods 、 The influence of hardware non ideal factors 、 Challenges in privacy and billing . Overcoming these challenges is an important prerequisite for synaesthesia integration to achieve large-scale business in the future .

【 key word 】6G; Communication awareness integration ;MIMO; Synaesthesia integrated waveform ; Hardware non ideal factors

0    introduction

6G Will implement “ Freely connected physical digital fusion world ” Vision [1].6G It is not only necessary to have the communication ability to realize the free connection of the physical and digital fusion world , It also needs to have the ability to perceive the physical world to build the corresponding digital world , And have the computing ability to provide the data processing required by the physical and digital fusion world , Finally, realize the efficient interaction and high integration of the physical world and the digital world . Both wireless communication and wireless sensing are based on electromagnetic wave theory , Electromagnetic signals have almost achieved seamless coverage in high-value scenes of human activities . The electromagnetic wave signal is modulated at the sending end , Make the electromagnetic wave carry the source information , The electromagnetic wave signal will be affected by the wireless environment in the process of propagation , That is, the electromagnetic wave signal is modulated by the environment, so it also carries the environmental information . The receiving end analyzes the electromagnetic wave signal , Not only can we get the information carried by the source , It can also extract the perceptual information that reflects the characteristics of the communication environment , in other words , Electromagnetic wave signal has inherent dual functions of communication and perception , This makes communication perception integrated （ Synaesthesia integration for short ） Become available