5 papers
Low-Complexity Tone Injection via Candidate Ranking for PAPR Reduction in OFDM and AFDM Systems
Yupeng Zheng, Ang Li, Jinfei Wang +2
Tone injection (TI) is a promising distortionless PAPR reduction technique that incurs no spectral efficiency loss. However, state-of-the-art TI schemes based on random candidate g…
Region-Based Constellation Designs for Constructive Interference Precoding in MU-MIMO
Yupeng Zheng, Chunmei Xu, Jinfei Wang +2
The performance of constructive interference precoding (CIP) for multi-user multi-antenna (MU-MIMO) systems is governed by the structure of the constructive interference (CI) regio…
Symmetric Rank- Regularization for Iterative Inversion of Ill-Conditioned MIMO Channels
Jinfei Wang, Yi Ma, Rahim Tafazolli
While iterative matrix inversion methods excel in computational efficiency, memory optimization, and support for parallel and distributed computing when managing large matrices, th…
Block-Weighted Lasso for Joint Optimization of Memory Depth and Kernels in Wideband DPD
Jinfei Wang, Yi Ma, Fei Tong +1
The optimizations of both memory depth and kernel functions are critical for wideband digital pre-distortion (DPD). However, the memory depth is usually determined via exhaustive s…
Exploiting Non-uniform Quantization for Enhanced ILC in Wideband Digital Pre-distortion
Jinfei Wang, Yi Ma, Fei Tong +1
In this paper, it is identified that lowering the reference level at the vector signal analyzer can significantly improve the performance of iterative learning control (ILC). We pr…