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Accurate downlink channel state information (CSI) is vital to achieving high spectrum efficiency in massive MIMO systems. Existing works on the deep learning (DL) model for CSI feedback have shown efficient compression and recovery in…

信息论 · 计算机科学 2022-05-10 Zhenyu Liu , Zhi Ding

For frequency division duplex systems, the essential downlink channel state information (CSI) feedback includes the links of compression, feedback, decompression and reconstruction to reduce the feedback overhead. One efficient CSI feedback…

信号处理 · 电气工程与系统科学 2023-06-06 Xiangyi Li , Jiajia Guo , Chao-Kai Wen , Shi Jin , Shuangfeng Han , Xiaoyun Wang

Deep learning (DL)-based channel state information (CSI) feedback has shown great potential in improving spectrum efficiency in massive MIMO systems. However, DL models optimized for specific environments often experience performance…

信息论 · 计算机科学 2024-10-11 Zhenyu Liu , Yi Ma , Rahim Tafazolli

In this paper, we propose two novel and practical deep-learning-based algorithms to solve the wireless channel type (WCT) recognition problem. Specifically, the WCT recognition problem is recast as a classification problem in deep learning…

信号处理 · 电气工程与系统科学 2021-02-05 Shu Sun , Xiaofeng Li , Sungho Moon

Existing communication systems exhibit inherent limitations in translating theory to practice when handling the complexity of optimization for emerging wireless applications with high degrees of freedom. Deep learning has a strong potential…

网络与互联网体系结构 · 计算机科学 2020-05-14 Tugba Erpek , Timothy J. O'Shea , Yalin E. Sagduyu , Yi Shi , T. Charles Clancy

Forward channel state information (CSI) often plays a vital role in scheduling and capacity-approaching transmission optimization for massive multiple-input multiple-output (MIMO) communication systems. In frequency division duplex (FDD)…

信号处理 · 电气工程与系统科学 2020-09-22 Zhenyu Liu , Mason del Rosario , Zhi Ding

Channel state information (CSI) is a fundamental component in both wireless communication and sensing systems, enabling critical functions such as radio resource optimization and environmental perception. In wireless sensing, data scarcity…

机器学习 · 计算机科学 2025-12-09 Zijian Zhao , Fanyi Meng , Zhonghao Lyu , Hang Li , Xiaoyang Li , Guangxu Zhu

Artificial intelligence (AI) has become a key enabler for next-generation wireless communication systems, offering powerful tools to cope with the increasing complexity, dynamics, and heterogeneity of modern wireless environments. To…

信号处理 · 电气工程与系统科学 2026-05-01 Peng Yi , Ying-Chang Liang

To fully exploit the advantages of massive multiple-input multiple-output (m-MIMO), accurate channel state information (CSI) is required at the transmitter. However, excessive CSI feedback for large antenna arrays is inefficient and thus…

信息论 · 计算机科学 2021-05-24 Yuyao Sun , Wei Xu , Le Liang , Ning Wang , Geoffery Ye Li , Xiaohu You

Channel state information (CSI) reporting is important for multiple-input multiple-output (MIMO) transmitters to achieve high capacity and energy efficiency in frequency division duplex (FDD) mode. CSI reporting for massive MIMO systems…

信息论 · 计算机科学 2019-12-24 Zhenyu Liu , Lin Zhang , Zhi Ding

Channel state information (CSI) feedback is critical for frequency division duplex (FDD) massive multi-input multi-output (MIMO) systems. Most conventional algorithms are based on compressive sensing (CS) and are highly dependent on the…

信号处理 · 电气工程与系统科学 2020-04-17 Hongyuan Ye , Feifei Gao , Jing Qian , Hao Wang , Geoffrey Ye Li

Due to the discarding of downlink channel state information (CSI) amplitude and the employing of iteration reconstruction algorithms, 1-bit compressed sensing (CS)-based superimposed CSI feedback is challenged by low recovery accuracy and…

信号处理 · 电气工程与系统科学 2022-01-21 Chaojin Qing , Qing Ye , Wenhui Liu , Jiafan Wang

Transmit beamforming is a simple multi-antenna technique for increasing throughput and the transmission range of a wireless communication system. The required feedback of channel state information (CSI) can potentially result in excessive…

信息论 · 计算机科学 2015-05-14 Kaibin Huang , Vincent K. N. Lau , Dongku Kim

In this paper, we present a deep learning based wireless transceiver. We describe in detail the corresponding artificial neural network architecture, the training process, and report on excessive over-the-air measurement results. We employ…

信号处理 · 电气工程与系统科学 2019-05-28 Johannes Schmitz , Caspar von Lengerke , Nikita Airee , Arash Behboodi , Rudolf Mathar

Channel state information (CSI) feedback is critical for achieving the promised advantages of enhancing spectral and energy efficiencies in massive multiple-input multiple-output (MIMO) wireless communication systems. Deep learning…

信息论 · 计算机科学 2024-03-29 Suhang Fan , Wei Xu , Renjie Xie , Shi Jin , Derrick Wing Kwan Ng , Naofal Al-Dhahir

In frequency-division duplexing systems, the downlink channel state information (CSI) acquisition scheme leads to high training and feedback overheads. In this paper, we propose an uplink-aided downlink channel acquisition framework using…

信息论 · 计算机科学 2024-10-28 Jiajia Guo , Chao-Kai Wen , Shi Jin

Massive multiple-input multiple-output (MIMO) systems rely on channel state information (CSI) feedback to perform precoding and achieve performance gain in frequency division duplex (FDD) networks. However, the huge number of antennas poses…

信息论 · 计算机科学 2018-08-01 Tianqi Wang , Chao-Kai Wen , Shi Jin , Geoffrey Ye Li

Transmit beamforming is one of the key techniques used in the existing IEEE 802.11 WiFi standards and future generations such as 11be and 11bn, a.k.a., ultra high reliability (UHR). The paper gives an overview of the current standardization…

信号处理 · 电气工程与系统科学 2025-03-04 Ziming He

Wireless communications are envisioned to bring about dramatic changes in the future, with a variety of emerging applications, such as virtual reality (VR), Internet of things (IoT), etc., becoming a reality. However, these compelling…

信号处理 · 电气工程与系统科学 2020-07-14 Linglong Dai , Ruicheng Jiao , Fumiyuki Adachi , H. Vincent Poor , Lajos Hanzo

In this paper, we consider a multi-antenna system where the receiver should harvest energy from the transmitter by wireless energy transfer to support its wireless information transmission. In order to maximize the harvesting energy, we…

信息论 · 计算机科学 2013-07-25 Xiaoming Chen , Chau Yuen , Zhaoyang Zhang