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Deep learning has been a groundbreaking technology in various fields as well as in communications systems. In spite of the notable advancements of deep neural network (DNN) based technologies in recent years, the high computational…

Information Theory · Computer Science 2018-08-08 Minhoe Kim , Woonsup Lee , Jungmin Yoon , Ohyun Jo

The orthogonal time frequency space (OTFS) modulation has emerged as a promising modulation scheme for high mobility wireless communications. To enable efficient OTFS detection in the delay-Doppler (DD) domain, the DD domain channels need…

Information Theory · Computer Science 2021-06-08 Fei Liu , Zhengdao Yuan , Qinghua Guo , Zhongyong Wang , Peng Sun

Reduced Order Modelling (ROM) has been widely used to create lower order, computationally inexpensive representations of higher-order dynamical systems. Using these representations, ROMs can efficiently model flow fields while using…

Fluid Dynamics · Physics 2021-10-13 Pranshu Pant , Ruchit Doshi , Pranav Bahl , Amir Barati Farimani

Efficient resource allocation with hybrid precoder design is essential for massive MIMO systems operating in millimeter wave (mmW) domain. Owing to a higher energy efficiency and a lower complexity of a partially connected hybrid…

Information Theory · Computer Science 2021-02-03 Salman Khalid , Waqas bin Abbas , Farhan Khalid

In-context learning (ICL) with large language models (LLMs) delivers strong few-shot performance by choosing few-shot demonstrations from the entire training data. However, existing ICL methods, which rely on similarity or diversity scores…

Computation and Language · Computer Science 2025-06-09 Jiarui Jin , Yuwei Wu , Haoxuan Li , Xiaoting He , Weinan Zhang , Yiming Yang , Yong Yu , Jun Wang , Mengyue Yang

Recently, a structure of an optimal linear precoder for multi cell downlink systems has been described in [1, Eq (3.33)]. Other references (e.g., [2,3]) have used simplified versions of the precoder to obtain promising performance gains.…

Information Theory · Computer Science 2023-07-19 Axel Müller , Romain Couillet , Emil Björnson , Sebastian Wagner , Mérouane Debbah

Recent studies shows that the orthogonal time frequency space (OTFS) waveform is a promising candidate for future communication. To meet users' potential demand for Integrated Sensing and Communication (ISAC) applications in 6G, the usage…

Information Theory · Computer Science 2025-10-01 Dazhuo Wang , Yonghong Zeng , Yuhong Wang , Francois Chin , Yugang Ma , Sumei Sun

Orthogonal time-frequency space (OTFS) scheme, which transforms a time and frequency selective channel into an almost non-selective channel in the delay-Doppler domain, establishes reliable wireless communication for high-speed moving…

Information Theory · Computer Science 2020-10-12 Prem Singh , Abhishek Gupta , Himanshu B. Mishra , Rohit Budhiraja

In this letter, we analyze the achievable rate of ultra-reliable low-latency communications (URLLC) in a randomly modeled wireless network. We use two mathematical tools to properly characterize the considered system: i) stochastic geometry…

Information Theory · Computer Science 2019-10-31 Jeonghun Park

Speculative decoding (SD) is a widely used approach for accelerating decode-heavy LLM inference workloads. While online inference workloads are highly dynamic, existing SD systems are rigid and take a coarse-grained approach to SD…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-04-23 Wenyan Chen , Chengzhi Lu , Yanying Lin , Dmitrii Ustiugov

In wireless communications, efficient image transmission must balance reliability, throughput, and latency, especially under dynamic channel conditions. This paper presents an adaptive and progressive pipeline for learned image compression…

Signal Processing · Electrical Eng. & Systems 2024-11-19 Mostafa Naseri , Pooya Ashtari , Mohamed Seif , Eli De Poorter , H. Vincent Poor , Adnan Shahid

Orthogonal time-frequency space (OTFS) modulation has emerged as a powerful wireless communication technology that is specifically designed to address the challenges of high-mobility scenarios and significant Doppler effects. Unlike…

Signal Processing · Electrical Eng. & Systems 2025-12-16 Emir Aslandogan , Haci Ilhan , Burak Ahmet Ozden , Erdogan Aydin , Ertugrul Basar , Miaowen Wen , Marco Di Renzo , Vincent Poor

Massive MIMO systems are highly efficient but critically rely on accurate channel state information (CSI) at the base station in order to determine appropriate precoders. CSI acquisition requires sending pilot symbols which induce an…

Information Theory · Computer Science 2022-01-06 Luc Le Magoarou , Taha Yassine , Stéphane Paquelet , Matthieu Crussière

In low latency applications and in general, for overspread channels, channel delay spread is a large percentage of the transmission frame duration. In this paper, we consider OTFS in an overspread channel exhibiting a delay spread that…

Information Theory · Computer Science 2024-04-15 Preety Priya , Yi Hong , Emanuele Viterbo

This paper investigates the system design and experimental validation of integrated sensing and communication (ISAC) for environmental sensing, which is expected to be a critical enabler for next-generation wireless networks. We advocate…

Signal Processing · Electrical Eng. & Systems 2025-07-03 Jun Wu , Yuye Shi , Weijie Yuan , Qingqing Cheng , Buyi Li , Xinyuan Wei

This article presents our initial results in deep learning for channel estimation and signal detection in orthogonal frequency-division multiplexing (OFDM). OFDM has been widely adopted in wireless broadband communications to combat…

Information Theory · Computer Science 2017-08-30 Hao Ye , Geoffrey Ye Li , Biing-Hwang Fred Juang

A precoded orthogonal time frequency space (OTFS) modulation scheme relying on faster-than-Nyquist (FTN) transmission over doubly selective fading channels is {proposed}, which enhances the spectral efficiency and improves the Doppler…

Signal Processing · Electrical Eng. & Systems 2024-11-05 Zekun Hong , Shinya Sugiura , Chao Xu , Lajos Hanzo

Deep Reinforcement Learning (DRL) has emerged as an efficient approach to resource allocation due to its strong capability in handling complex decision-making tasks. However, only limited research has explored the training of DRL models…

Machine Learning · Computer Science 2025-09-23 Aohan Li , Miyu Tsuzuki

Frequency domain representation of time series feature offers a concise representation for handling real-world time series data with inherent complexity and dynamic nature. However, current frequency-based methods with complex operations…

Computer Vision and Pattern Recognition · Computer Science 2024-07-22 Xianing Chen , Hanting Chen , Hailin Hu

Orthogonal time frequency space (OTFS) modulation is a recently proposed delay-Doppler (DD) domain communication scheme, which has shown promising performance in general wireless communications, especially over high-mobility channels. In…

Information Theory · Computer Science 2023-01-31 Shuangyang Li , Jinhong Yuan , Paul Fitzpatrick , Taka Sakurai , Giuseppe Caire