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A fundamental task in wireless communication is Channel Estimation: Compute the channel parameters a signal undergoes while traveling from a transmitter to a receiver. In the case of delay-Doppler channel, a widely used method is the…

信息论 · 计算机科学 2015-03-20 Alexander Fish , Shamgar Gurevich , Ronny Hadani , Akbar Sayeed , Oded Schwartz

Dynamical decoupling has been actively investigated since Viola first suggested using a pulse sequence to protect a qubit from decoherence. Since then, many schemes of dynamical decoupling have been proposed to achieve high-order…

量子物理 · 物理学 2015-09-09 Haoyu Qi , Jonathan P. Dowling

Orthogonal time frequency space (OTFS) modulation, a delay-Doppler (DD) domain communication scheme exhibiting strong robustness against the Doppler shifts, has the potentials to be employed in LEO satellite communications. However, the…

信息论 · 计算机科学 2024-03-05 Yu Liu , Ming Chen , Cunhua Pan , Tantao Gong , Jinhong Yuan , Jiangzhou Wang

Orthogonal time frequency space (OTFS) modulation has emerged as a promising candidate to overcome the performance degradation of orthogonal frequency division multiplexing (OFDM), which are commonly encountered in high-mobility wireless…

信号处理 · 电气工程与系统科学 2026-02-02 Yushi Lei , Yusha Liu , Guanghui Liu , Lei Wan , Kun Yang

Distributed deep learning (DDL) is a promising research area, which aims to increase the efficiency of training deep learning tasks with large size of datasets and models. As the computation capability of DDL nodes continues to increase,…

分布式、并行与集群计算 · 计算机科学 2023-07-11 Zixuan Chen , Lei Shi , Xuandong Liu , Jiahui Li , Sen Liu , Yang Xu

As a promising technique for high-mobility wireless communications, orthogonal time frequency space (OTFS) has been proved to enjoy excellent advantages with respect to traditional orthogonal frequency division multiplexing (OFDM). Although…

数据结构与算法 · 计算机科学 2023-06-22 Mi Qian , Fei Ji , Yao Ge , Miaowen Wen , Xiang Cheng , H. Vincent Poor

In this paper, we propose a novel channel estimation scheme for pulse-shaped multicarrier systems using smoothness regularization for ultra-reliable low-latency communication (URLLC). It can be applied to any multicarrier system with or…

信息论 · 计算机科学 2024-10-28 Andreas Pfadler , Tom Szollmann , Peter Jung , Slawomir Stanczak

This paper proposes an ordered sequence detection (OSD) for digital pulse interval modulation (DPIM) in optical wireless communications. Leveraging the sparsity of DPIM sequences, OSD shows comparable performance to the optimal maximum…

信号处理 · 电气工程与系统科学 2018-12-27 Shuaishuai Guo , Ki-Hong Park , Mohamed-Slim Alouini

This thesis is concerned with data-aided (DA) scheme and CFO tracking for OFDM system. OFDM system model is developed first without CFO and then with CFO. The system performance is evaluated via simulation. The bit error rate (BER),…

信号处理 · 电气工程与系统科学 2022-10-17 Mohamed S. Elbakry

Delay differential equation model of a NOLM-NALM mode-locked laser is developed that takes into account finite relaxation rate of the gain medium and asymmetric beam splitting at the entrance of the nonlinear mirror loop. Asymptotic linear…

Delay alignment modulation (DAM) is an emerging technique for achieving inter-symbol interference (ISI)-free wideband communications using spatial-delay processing, without relying on channel equalization or multi-carrier transmission.…

信息论 · 计算机科学 2023-09-06 Haiquan Lu , Yong Zeng

Pulse shaping for coherent optical fiber communication has been an active area of research for the past decade. Most of the early schemes are based on classic Nyquist pulse shaping that was originally intended for linear channels. The best…

信息论 · 计算机科学 2022-07-14 Tim Uhlemann , Alexander Span , Sebastian Dörner , Stephan ten Brink

This paper proposes a novel framework for delay-tolerant particle filtering that is computationally efficient and has limited memory requirements. Within this framework the informativeness of a delayed (out-of-sequence) measurement (OOSM)…

应用统计 · 统计学 2015-05-20 Boris N. Oreshkin , Xuan Liu , Mark J. Coates

This paper introduces a novel precoder design aimed at reducing pilot overhead for effective channel estimation in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) applications utilizing high-order…

信号处理 · 电气工程与系统科学 2025-04-30 Nilesh Kumar Jha , Huayan Guo , Vincent K. N. Lau

This paper introduces a sensing-centric joint communication and millimeter-wave radar paradigm to facilitate collaboration among intelligent vehicles. We first propose a chirp waveform-based delay-Doppler quadrature amplitude modulation…

信号处理 · 电气工程与系统科学 2025-12-23 Zhuoran Li , Zhen Gao , Sheng Chen , Dusit Niyato , Zhaocheng Wang , George K. Karagiannidis

The orthogonal delay-Doppler division multiplexing (ODDM) modulation is a recently proposed multi-carrier modulation that features a realizable pulse orthogonal with respect to the delay-Doppler (DD) plane's fine resolutions. In this paper,…

信号处理 · 电气工程与系统科学 2024-10-24 Kehan Huang , Min Qiu , Jun Tong , Jinhong Yuan , Hai Lin

Passive radar systems can detect and track the moving targets of interest by exploiting non-cooperative illuminators-of-opportunity to transmit orthogonal frequency division multiplexing (OFDM) signals. These targets are searched using a…

最优化与控制 · 数学 2023-02-21 Mengjiao Shi , Yunhai Xiao , Peili Li

We elaborate on the recently proposed orthogonal time frequency space (OTFS) modulation technique, which provides significant advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels. We first derive the…

信息论 · 计算机科学 2017-09-28 P. Raviteja , Khoa T. Phan , Qianyu Jin , Yi Hong , Emanuele Viterbo

The optoacoustic process can solve the longstanding challenge of wireless information transmission from an airborne unit to an underwater node (UWN). The nonlinear optoacoustic signal generated by proper laser parameters can propagate long…

信号处理 · 电气工程与系统科学 2022-08-30 Muntasir Mahmud , Mohamed Younis , Md Shafiqul Islam , Fow-Sen Choa , Gary Carter

This review presents a comprehensive survey and benchmark of pulse shape discrimination (PSD) algorithms for radiation detection, classifying nearly sixty methods into statistical (time-domain, frequency-domain, neural network-based) and…

机器学习 · 计算机科学 2026-04-21 Haoran Liu , Yihan Zhan , Mingzhe Liu , Yanhua Liu , Peng Li , Zhuo Zuo , Bingqi Liu , Runxi Liu