Abstract
The impending spectrum congestion imposed by the emergence of new bandwidth-thirsty applications may be mitigated by the integration of radar and classic communications functionalities in a common system. Furthermore, the merger of a sensing component into wireless communication networks has raised interest in recent years and it may become a compelling design objective for 6G. This article presents the evolution of the hitherto separate radar and communication systems towards their amalgam known as a joint radar and communication (RADCOM) system. Explicitly, we propose to integrate a radio sensing component into 6G. We consider an ultra-dense network (UDN) scenario relying on an active multistatic radar configuration and on cooperation between the access points across the entire coverage area. The technological trends required to reach a feasible integration, the applications anticipated and the open research challenges are identified, with an emphasis on high-accuracy network synchronization. The successful integration of these technologies would facilitate centimeter-level resolution, hence supporting compelling high-resolution applications for next-generation networks, such as robotic cars and industrial assembly lines.
Highlights
There has been significant interest in the combination of radar and communication functionalities within a common platform [1]-[4], and this need will increase with 6G, which aims for supporting the convergence of the digital, physical, and personal domains
In this article, we proposed a framework that includes a sensing component in ultra-dense network (UDN) networks
We introduced the overall system architecture and described the components of the radar and communication (RADCOM) network, namely, the multistatic radar configuration as well as its receiver, and the central unit (CU)
Summary
There has been significant interest in the combination of radar and communication functionalities within a common platform [1]-[4], and this need will increase with 6G, which aims for supporting the convergence of the digital, physical, and personal domains This requires expanding the functionalities of 5G, to include the integration of radio sensing and communications in support of both hardware-and spectrumsharing. Radar and Communication Paths over Time Radio detection, ranging and wireless communication are the most common radio functionalities used by both civilian and military applications These systems have been designed and developed in isolation from each other [1]. In communication systems, there is a need to estimate the particular parameters of the channel using sophisticated signal processing techniques This is typically the channel’s impulse response (CIR), which directly affects the transmitted information-carrying signal. Since sensing and communication are intrinsic functions of IoT devices, the convergence of both features in sensors based on reflectometry principles would be a critical step in providing dual functionality, promoting convergence and reducing the cost of production by reusing technology [3]
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