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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…

信息论 · 计算机科学 2017-08-30 Hao Ye , Geoffrey Ye Li , Biing-Hwang Fred Juang

Spatial modulation (SM) has proven to be a promising multiple-input-multiple-output (MIMO) technique which provides high energy efficiency and reduces system complexity. In SM, only one transmitter is active at any given time while the rest…

信息论 · 计算机科学 2020-01-08 Anil Yesilkaya , Rui Bian , Iman Tavakkolnia , Harald Haas

In this paper, we present a unique word (UW)-based channel estimation approach for multiple-input multiple-output (MIMO) systems under doubly dispersive channels, which is applied to orthogonal time frequency space (OTFS) with space time…

信号处理 · 电气工程与系统科学 2021-04-05 Roberto Bomfin , Marwa Chafii , Ahmad Nimr , Gerhard Fettweis

A finite difference method (FDM) applicable to a two dimensional (2D) quantum dot was developed as a non-conventional approach to the theoretical understandings of quantum devices. This method can be applied to a realistic potential with an…

介观与纳米尺度物理 · 物理学 2013-12-16 Jai Seok Ahn

In this study, we compare the single-carrier (SC) waveform adopted in IEEE 802.11ad and unique word discrete Fourier transform spread orthogonal frequency division multiplexing (UW DFT-s-OFDM) waveform. We provide equivalent representations…

信息论 · 计算机科学 2018-01-30 Alphan Sahin , Rui Yang , Frank La Sita , Robert L. Olesen

Generating mathematical equations from natural language requires an accurate understanding of the relations among math expressions. Existing approaches can be broadly categorized into token-level and expression-level generation. The former…

计算与语言 · 计算机科学 2023-10-19 Wenqi Zhang , Yongliang Shen , Qingpeng Nong , Zeqi Tan , Yanna Ma , Weiming Lu

We extend the idea of end-to-end learning of communications systems through deep neural network (NN)-based autoencoders to orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP). Our implementation has the same benefits…

信息论 · 计算机科学 2018-03-16 Alexander Felix , Sebastian Cammerer , Sebastian Dörner , Jakob Hoydis , Stephan ten Brink

Automatic poetry generation is novel and interesting application of natural language processing research. It became more popular during the last few years due to the rapid development of technology and neural computing power. This line of…

计算与语言 · 计算机科学 2019-01-23 Krzysztof Wołk , Emilia Zawadzka-Gosk , Wojciech Czarnowski

We propose a novel modulation scheme for intensity modulation and direct detection (IM/DD) based optical communication system employing orthogonal frequency division multiplexing (OFDM). This method utilizes the DC-bias, which typically is…

信息论 · 计算机科学 2014-10-28 Qian Gao , Chen Gong , Rui Wang , Zhengyuan Xu , Yingbo Hua

Data-driven modeling of dynamical systems is a crucial area of machine learning. In many scenarios, a thorough understanding of the model's behavior becomes essential for practical applications. For instance, understanding the behavior of a…

机器学习 · 计算机科学 2025-04-14 Krzysztof Kacprzyk , Mihaela van der Schaar

Dual mode orthogonal frequency division multiplexing with index modulation (DM-OFDM-IM) is recently proposed, which modulates all subcarriers to eliminate the limits of spectrum efficiency in OFDM with index modulation (OFDM-IM). In…

信息论 · 计算机科学 2019-02-05 Kee-Hoon Kim

In appropriate frameworks, automatic differentiation is transparent to the user at the cost of being a significant computational burden when the number of operations is large. For iterative algorithms, implicit differentiation alleviates…

最优化与控制 · 数学 2023-05-24 Jérôme Bolte , Edouard Pauwels , Samuel Vaiter

Diffusion probabilistic models (DPMs) have shown remarkable performance in high-resolution image synthesis, but their sampling efficiency is still to be desired due to the typically large number of sampling steps. Recent advancements in…

计算机视觉与模式识别 · 计算机科学 2024-07-04 Shuchen Xue , Zhaoqiang Liu , Fei Chen , Shifeng Zhang , Tianyang Hu , Enze Xie , Zhenguo Li

The emergence of generative models enables the creation of texts and images tailored to users' preferences. Existing personalized generative models have two critical limitations: lacking a dedicated paradigm for accurate preference…

信息检索 · 计算机科学 2026-04-23 Yuting Zhang , Ying Sun , Dazhong Shen , Ziwei Xie , Feng Liu , Changwang Zhang , Xiang Liu , Jun Wang , Hui Xiong

The standard definition generation task requires to automatically produce mono-lingual definitions (e.g., English definitions for English words), but ignores that the generated definitions may also consist of unfamiliar words for language…

计算与语言 · 计算机科学 2023-06-12 Hengyuan Zhang , Dawei Li , Yanran Li , Chenming Shang , Chufan Shi , Yong Jiang

We present a novel inference scheme, self-speculative decoding, for accelerating Large Language Models (LLMs) without the need for an auxiliary model. This approach is characterized by a two-stage process: drafting and verification. The…

计算与语言 · 计算机科学 2025-02-11 Jun Zhang , Jue Wang , Huan Li , Lidan Shou , Ke Chen , Gang Chen , Sharad Mehrotra

We propose a general method for automated word puzzle generation. Contrary to previous approaches in this novel field, the presented method does not rely on highly structured datasets obtained with serious human annotation effort: it only…

计算与语言 · 计算机科学 2012-06-05 Balazs Pinter , Gyula Voros , Zoltan Szabo , Andras Lorincz

We designed an automatic differentiation-based strategy to generate optical trap arrays that change smoothly in time. Instead of repeatedly regenerating the holograms for each time step, we derive the differential form of the phase dynamics…

光学 · 物理学 2025-08-12 Xing-Yu Zhang , Yu-Qing Wang , Angrui Du , Han Wang , Lei Wang , Jinguo Liu

Discrete Diffusion Large Language Models (dLLMs) have recently emerged as a competitive paradigm for non-autoregressive language modeling. Their distinctive decoding mechanism enables faster inference speed and strong performance in code…

计算与语言 · 计算机科学 2025-10-08 Qi Li , Runpeng Yu , Haiquan Lu , Xinchao Wang

An algorithm for the automatic Feynman diagram (FD) generation is presented in this paper. The algorithm starts directly from the definition formula of FD, and is simple in concept and easy for coding. The symmetry factor for each FD is…

高能物理 - 唯象学 · 物理学 2013-05-14 Bo Xiao , Hao Wang , Shou-hua Zhu