8 papers · 1 filter
Asymptotic SEP Analysis and Optimization of Linear-Quantized Precoding in Massive MIMO Systems
Zheyu Wu, Junjie Ma, Ya-Feng Liu +1
A promising approach to deal with the high hardware cost and energy consumption of massive MIMO transmitters is to use low-resolution digital-to-analog converters (DACs) at each an…
Capacity Optimality of AMP in Coded Systems
Lei Liu, Chulong Liang, Junjie Ma +1
This paper studies a large random matrix system (LRMS) model involving an arbitrary signal distribution and forward error control (FEC) coding. We establish an area property based…
Analysis of Spectral Methods for Phase Retrieval with Random Orthogonal Matrices
Rishabh Dudeja, Milad Bakhshizadeh, Junjie Ma +1
Phase retrieval refers to algorithmic methods for recovering a signal from its phaseless measurements. Local search algorithms that work directly on the non-convex formulation of t…
Spectral Method for Phase Retrieval: an Expectation Propagation Perspective
Junjie Ma, Rishabh Dudeja, Ji Xu +2
Phase retrieval refers to the problem of recovering a signal from its phaseless measurements …
Approximate Message Passing for Amplitude Based Optimization
Junjie Ma, Ji Xu, Arian Maleki
We consider an -regularized non-convex optimization problem for recovering signals from their noisy phaseless observations. We design and study the performance of a message…
Optimization-based AMP for Phase Retrieval: The Impact of Initialization and -regularization
Junjie Ma, Ji Xu, Arian Maleki
We consider an -regularized non-convex optimization problem for recovering signals from their noisy phaseless observations. We design and study the performance of a message…