面向通感一体化的非均匀感知信号设计

Non-uniform Sensing Signal Design for Integrated Sensing and Communications

通感一体化被国际电信联盟ITU确定为6G的六大应用场景之一,而感知信号设计是通感一体化研究中的一个重要议题。传统的均匀感知信号设计具有时频资源开销大、信号设计灵活度差等问题,而非均匀感知信号设计能够解决上述问题。首先对三种非均匀信号设计方法的原理进行梳理和对比,给出非均匀信号设计在感知信号时频资源配置中的应用和链路自适应方法。然后基于vivo公司自研的通感一体化样机平台,对三种非均匀感知信号设计进行了初步的测试验证的性能对比。测试结果表明,非均匀感知信号在显著节约时频资源的情况下,能够取得较好的感知性能。

Integrated sensing and communication(ISAC)has been confirmed as one of the six scenarios in 6G system by the international telecommunication union(ITU).Sensing signal design is a crucial issue in researches of ISAC.Traditional uniform sensing signal shows the property of large time-frequency resource occupation and low signal design flexibility.Fortunately,non-uniform sensing signal design can help to overcome the above-mentioned problems.This paper overviews and compares the principle of three categories of non-uniform signal design,and proposes the corresponding application and link adaptations methods for ISAC sensing signal design.Finally,tests,verifications and performance comparisons for the three categories of non-uniform signal design are performed using on the ISAC prototype,which is developed by vivo.The results demonstrate that,the non-uniform sensing signal can achieve good sensing performance while significantly reduces the time-frequency resources.