no code implementations • 3 Jun 2024 • Shengsong Luo, Junjie Ma, Chongbin Xu, Xin Wang
We consider the identifiability issue of maximum likelihood based activity detection in massive MIMO based grant-free random access.
no code implementations • 30 Apr 2022 • Zeyu Han, Xiaojun Yuan, Chongbin Xu, Xin Wang
In this letter, we extend the sparse Kronecker-product (SKP) coding scheme, originally designed for the additive white Gaussian noise (AWGN) channel, to multiple input multiple output (MIMO) unsourced random access (URA).
1 code implementation • 19 Feb 2021 • Ruyuan Qu, Jiaqi He, Hui Feng, Chongbin Xu, Bo Hu
In this work, we take this divergence into consideration, and propose a multi-order hypergraph Laplacian and the corresponding total variation.
no code implementations • 12 Jan 2020 • Shuchao Jiang, Xiaojun Yuan, Xin Wang, Chongbin Xu, Wei Yu
To address the problem that the exact calculation of the messages exchanged within CSCE and between the two modules is complicated due to phase ambiguity issues, this paper proposes a rotationally invariant Gaussian mixture (RIGM) model, and develops an efficient JUICESD-RIGM algorithm.
1 code implementation • 3 Jun 2019 • Jiang Zhu, Chao-Kai Wen, Jun Tong, Chongbin Xu, Shi Jin
Employing low-resolution analog-to-digital converters (ADCs) coupled with large antenna arrays at the receivers has drawn considerable interests in the millimeter wave (mm-wave) system.
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