16 citations · 23 across the 10 of their papers we have counts for
10 papers
Precise Analysis of Covariance Identifiability for Activity Detection in Grant-Free Random Access
Shengsong Luo, Junjie Ma, Chongbin Xu +1
We consider the identifiability issue of maximum likelihood based activity detection in massive MIMO based grant-free random access. A prior work by Chen et al. indicates that the…
Receiver Design for MIMO Unsourced Random Access with SKP Coding
Zeyu Han, Xiaojun Yuan, Chongbin Xu +1
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 out…
Sparse Kronecker-Product Coding for Unsourced Multiple Access
Zeyu Han, Xiaojun Yuan, Chongbin Xu +2
In this paper, a sparse Kronecker-product (SKP) coding scheme is proposed for unsourced multiple access. Specifically, the data of each active user is encoded as the Kronecker prod…
Regularized Recovery by Multi-order Partial Hypergraph Total Variation
Ruyuan Qu, Jiaqi He, Hui Feng +2
Capturing complex high-order interactions among data is an important task in many scenarios. A common way to model high-order interactions is to use hypergraphs whose topology can…
An Entropy-based Proof of Threshold Saturation for Nonbinary SC-LDPC Ensembles on the BEC
Zhonghao Zhang, Mengnan Xu, Chongbin Xu +2
In this paper we are concerned with the asymptotic analysis of nonbinary spatially-coupled low-density parity-check (SC-LDPC) ensembles defined over GL (the gen…
Joint User Identification, Channel Estimation, and Signal Detection for Grant-Free NOMA
Shuchao Jiang, Xiaojun Yuan, Xin Wang +2
For massive machine-type communications, centralized control may incur a prohibitively high overhead. Grant-free non-orthogonal multiple access (NOMA) provides possible solutions,…