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相关论文: TypeII-CsiNet: CSI Feedback with TypeII Codebook

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Deep learning has been widely adopted for channel state information (CSI)-fingerprinting indoor localization systems. These systems usually consist of two main parts, i.e., a positioning network that learns the mapping from high-dimensional…

信号处理 · 电气工程与系统科学 2023-10-11 Bowen Zhang , Houssem Sifaou , Geoffrey Ye Li

Reciprocity-based time-division duplex (TDD) Massive MIMO (multiple-input multiple-output) systems utilize channel estimates obtained in the uplink to perform precoding in the downlink. However, this method has been criticized of breaking…

信息论 · 计算机科学 2022-06-13 Ema Becirovic , Emil Björnson , Erik G. Larsson

Passage retrieval is a fundamental task in many information systems, such as web search and question answering, where both efficiency and effectiveness are critical concerns. In recent years, neural retrievers based on pre-trained language…

信息检索 · 计算机科学 2024-03-21 Qian Dong , Yiding Liu , Qingyao Ai , Haitao Li , Shuaiqiang Wang , Yiqun Liu , Dawei Yin , Shaoping Ma

Cochlear implants (CIs) are surgically implanted hearing devices, which allow to restore a sense of hearing in people suffering from profound hearing loss. Wireless streaming of audio from external devices to CI signal processors has become…

声音 · 计算机科学 2025-06-03 Reemt Hinrichs , Jörn Ostermann

We investigate intercell interference cancellation (ICIC) with a practical downlink training and uplink channel state information (CSI) feedback model. The average downlink throughput for such a 2-cell network is derived. The user location…

信息论 · 计算机科学 2011-05-24 Jun Zhang , Jeffrey G. Andrews , Khaled B. Letaief

Recently, deep learning-enabled joint-source channel coding (JSCC) has received increasing attention due to its great success in image transmission. However, most existing JSCC studies only focus on single-input single-output (SISO)…

信号处理 · 电气工程与系统科学 2023-02-28 Guangyi Zhang , Qiyu Hu , Yunlong Cai , Guanding Yu

The low-level details and high-level semantics are both essential to the semantic segmentation task. However, to speed up the model inference, current approaches almost always sacrifice the low-level details, which leads to a considerable…

计算机视觉与模式识别 · 计算机科学 2020-04-07 Changqian Yu , Changxin Gao , Jingbo Wang , Gang Yu , Chunhua Shen , Nong Sang

Interference alignment (IA) is a joint-transmission technique that achieves the capacity of the interference channel for high signal-to-noise ratios (SNRs). Most prior work on IA is based on the impractical assumption that perfect and…

信息论 · 计算机科学 2015-05-28 Sungyoon Cho , Kaibin Huang , Dongku Kim , Vincent K. N. Lau , Hyukjin Chae , Hanbyul Seo , Byounghoon Kim

Channel state information (CSI) feedback is necessary for the frequency division duplexing (FDD) multiple input multiple output (MIMO) systems due to the channel non-reciprocity. With the help of deep learning, many works have succeeded in…

信息论 · 计算机科学 2023-02-07 Zhilin Lu , Xudong Zhang , Rui Zeng , Jintao Wang

There is a fundamental trade-off between the channel representation resolution of codebooks and the overheads of feedback communications in the fifth generation new radio (5G NR) frequency division duplex (FDD) massive multiple-input and…

信号处理 · 电气工程与系统科学 2020-10-23 Kai Li , Ying Li , Lei Cheng , Qingjiang Shi , Zhi-Quan Luo

The unified streaming and non-streaming two-pass (U2) end-to-end model for speech recognition has shown great performance in terms of streaming capability, accuracy, real-time factor (RTF), and latency. In this paper, we present U2++, an…

声音 · 计算机科学 2022-01-03 Di Wu , Binbin Zhang , Chao Yang , Zhendong Peng , Wenjing Xia , Xiaoyu Chen , Xin Lei

Non-orthogonal communications are expected to play a key role in future wireless systems. In downlink transmissions, the data symbols are broadcast from a base station to different users, which are superimposed with different power to…

信息论 · 计算机科学 2022-08-01 Thien Van Luong , Nir Shlezinger , Chao Xu , Tiep M. Hoang , Yonina C. Eldar , Lajos Hanzo

In this work, we propose a joint adaptive codebook construction and feedback generation scheme in frequency division duplex (FDD) systems. Both unsupervised and supervised deep learning techniques are used for this purpose. Based on a…

信息论 · 计算机科学 2021-05-24 Nurettin Turan , Michael Koller , Samer Bazzi , Wen Xu , Wolfgang Utschick

Deep learning (DL)-based channel state information (CSI) feedback improves the capacity and energy efficiency of massive multiple-input multiple-output (MIMO) systems in frequency division duplexing mode. However, multiple neural networks…

信息论 · 计算机科学 2022-03-01 Xin Liang , Haoran Chang , Haozhen Li , Xinyu Gu , Lin Zhang

We propose a Coefficient-to-Basis Network (C2BNet), a novel framework for solving inverse problems within the operator learning paradigm. C2BNet efficiently adapts to different discretizations through fine-tuning, using a pre-trained model…

机器学习 · 计算机科学 2025-03-12 Zecheng Zhang , Hao Liu , Wenjing Liao , Guang Lin

Recent information theoretic results suggest that precoding on the multi-user downlink MIMO channel with delayed channel state information at the transmitter (CSIT) could lead to data rates much beyond the ones obtained without any CSIT,…

信息论 · 计算机科学 2012-07-10 Xinping Yi , David Gesbert

Front-end electronics equipped with high-speed digitizers are being used and proposed for future nuclear detectors. Recent literature reveals that deep learning models, especially one-dimensional convolutional neural networks, are promising…

仪器与探测器 · 物理学 2023-02-10 Pengcheng Ai , Zhi Deng , Yi Wang , Hui Gong , Xinchi Ran , Zijian Lang

In the fifth-generation new radio (5G NR) frequency division duplex (FDD) massive multiple-input and multiple-output (MIMO) systems, downlink beamforming relies on the acquisition of downlink channel state information (CSI). Codebook based…

信号处理 · 电气工程与系统科学 2024-09-04 Kai Li , Ying Li , Lei Cheng , Zhi-Quan Luo

Recent works using artificial neural networks based on distributed word representation greatly boost performance on various natural language processing tasks, especially the answer selection problem. Nevertheless, most of the previous works…

计算与语言 · 计算机科学 2018-03-19 Lingxun Meng , Yan Li

Channel state information (CSI) provided by limited feedback channel can be utilized to increase the system throughput. However, in multiple input multiple output (MIMO) systems, the signaling overhead realizing this CSI feedback can be…

信息论 · 计算机科学 2013-06-18 Mingxin Zhou , Leiming Zhang , Lingyang Song , Merouane Debbah