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题名

Sensing Mutual Information with Random Signals in Gaussian Channels

作者
DOI
发表日期
2024-06-13
ISSN
1550-3607
ISBN
978-1-7281-9055-6
会议录名称
会议日期
9-13 June 2024
会议地点
Denver, CO, USA
摘要
Sensing performance is typically evaluated by classical metrics, such as Cramer-Rao bound and signal- to-clutter-plus-noise ratio. The recent development of the integrated sensing and communication (ISAC) framework motivated the efforts to unify the metric for sensing and communication, where researchers have proposed to utilize mutual information (MI) to measure the sensing performance with deterministic signals. However, the need to communicate in ISAC systems necessitates the use of random signals for sensing applications and the closed-form evaluation for the sensing mutual information (SMI) with random signals is not yet available in the literature. This paper investigates the SMI and precoder design for sensing applications with random signals. For that purpose, we first derive the closed-form expression for the SMI with random signals by utilizing random matrix theory. The result reveals some interesting physical insights regarding the relation between the SMI with deterministic and random signals. The derived SMI is then utilized to optimize the precoder by leveraging a manifold-based optimization approach. The accuracy of the theoretical analysis and the effectiveness of the proposed precoder design method are validated by simulation results.
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成果类型会议论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/828769
专题南方科技大学
作者单位
1.The Hong Kong University of Science and Technology, Hong Kong
2.Southern University of Science and Technology, China
3.China Telecom Research Institute, China
推荐引用方式
GB/T 7714
Lei Xie,Fan Liu,Zhanyuan Xie,et al. Sensing Mutual Information with Random Signals in Gaussian Channels[C],2024.
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