Multicarrier Modulation-Based Digital Radio-over-Fibre System Achieving Unequal Bit Protection with Over 10 dB SNR Gain

no code implementations • 4 Jul 2023 • Yicheng Xu, Yixiao Zhu, Xiaobo Zeng, Mengfan Fu, Hexun Jiang, Lilin Yi, Weisheng Hu, Qunbi Zhuge

We propose a multicarrier modulation-based digital radio-over-fibre system achieving unequal bit protection by bit and power allocation for subcarriers.

TACR: A Table-alignment-based Cell-selection and Reasoning Model for Hybrid Question-Answering

no code implementations • 24 May 2023 • Jian Wu, Yicheng Xu, Yan Gao, Jian-Guang Lou, Börje F. Karlsson, Manabu Okumura

A common challenge in HQA and other passage-table QA datasets is that it is generally unrealistic to iterate over all table rows, columns, and linked passages to retrieve evidence.

Question Answering Retrieval

Too Much Information Kills Information: A Clustering Perspective

no code implementations • 16 Sep 2020 • Yicheng Xu, Vincent Chau, Chenchen Wu, Yong Zhang, Vassilis Zissimopoulos, Yifei Zou

Clustering is one of the most fundamental tools in the artificial intelligence area, particularly in the pattern recognition and learning theory.

Clustering Learning Theory

mmWave/THz Channel Estimation Using Frequency-Selective Atomic Norm Minimization

no code implementations • 27 Aug 2019 • Yicheng Xu, Hongyun Chu, Xiaodong Wang

We propose a MIMO channel estimation method for millimeter-wave (mmWave) and terahertz (THz) systems based on frequency-selective atomic norm minimization (FS-ANM).