公开(公告)号：US20240243778A1

公开(公告)日：2024-07-18

申请号：US17925505

申请日：2022-02-21

Applicant: SOUTHEAST UNIVERSITY

Inventor： Li YOU ,  Jie XU ,  Mengyu QIAN ,  Kelin HUANG ,  Yuqi YE ,  Wenjin WANG

IPC: H04B7/04 ,  H01Q15/00 ,  H04B7/0413

CPC classification number: H04B7/04013 ,  H01Q15/0086 ,  H04B7/0413

Abstract: The present invention discloses a near-field broadband uplink MIMO transmission method assisted by a dynamic metasurface antenna. The method includes: Broadband signals sent by a plurality of users distributed in a near-field region are processed with a large-size dynamic metasurface antenna as a receive antenna on a base station side, which can reduce system hardware costs and power consumption; and compared with the current hybrid beamforming based on a phase shifter and a conventional antenna, hybrid beamforming based on the dynamic metasurface antenna can effectively improve transmission performance. The present invention proposes an algorithm framework jointly designing a dynamic metasurface antenna and a baseband beamformer and including method such as matrix-weighted mean square error sum (MWMSE) minimization, alternate optimization, matrix vectorization, and MM. The present invention implements near-field broadband large-scale MIMO uplink transmission assisted by a dynamic metasurface antenna with low algorithm complexity and good convergence.

公开(公告)号：US20240195462A1

公开(公告)日：2024-06-13

申请号：US17786380

申请日：2021-10-12

Applicant: Southeast University

Inventor： Li YOU ,  Xiaoyu QIANG ,  Yuqi YE ,  Yan HUANG ,  Wenjin WANG ,  Xiqi GAO

IPC: H04B7/0456 ,  H04B7/185

CPC classification number: H04B7/0456 ,  H04B7/18513

Abstract: Disclosed is a transmit method based on satellite massive Multiple-Input Multiple-Output (MIMO) integrated sensing and communication, where a satellite end is equipped with a massive MIMO array to implement an integrated sensing and communication system. The satellite end sends a communication signal to multiple user terminals based on statistical properties of electromagnetic wave propagation, and detects multiple targets simultaneously, thus realizing simultaneous communication of the satellite end with the user terminals and sensing for the targets. The present disclosure fully utilizes the spectrum resources, implements a flexible switch between wireless communication and target sensing functions based on a satellite, and mitigates the effects of the beam squint on system performance, thus greatly improving communication performance and radar resolution and being applicable for construction of an integrated network of space, air, ground and sea to achieve global coverage.