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In interferometric gravitational wave detectors, quantum radiation pressure noise, which is a back action of the measurement, will limit their sensitivities at low frequencies. Speed meters are one of the solutions to reduce the back action…

广义相对论与量子宇宙学 · 物理学 2023-04-26 Yohei Nishino , Tomotada Akutsu , Yoichi Aso , Takayuki Tomaru

This paper focuses on radar waveform optimization for minimizing the Cram\'er-Rao bound (CRB) in a multiple-input multiple-output (MIMO) radar system. In contrast to conventional approaches relying on semi-definite programming (SDP) and…

信号处理 · 电气工程与系统科学 2024-09-20 Xiaohua Zhou , Xu Du , Yijie Mao

This work investigates the downlink performance of a multi-cell massive multiple-input multiple-output (MIMO) system that employs one-bit analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) in the receiving and…

信息论 · 计算机科学 2023-03-08 Qurrat-Ul-Ain Nadeem , Anas Chaaban

Due to the heavy reliance of millimeter-wave (mmWave) wireless systems on directional links, beamforming (BF) with high-dimensional arrays is essential for cellular systems in these frequencies. How to perform the array processing in a…

High resolution analog to digital converters (ADCs) are conventionally used at the receiver terminals to store an accurate digital representation of the received signal, thereby allowing for reliable decoding of transmitted messages.…

信息论 · 计算机科学 2021-12-07 Abbas Khalili , Farhad Shirani , Elza Erkip , Yonina C. Eldar

This paper addresses robust waveform design for multiple-input-multiple-output (MIMO) radar detection. A probabilistic model is proposed to describe the target uncertainty. Considering that waveform design based on maximizing the…

信号处理 · 电气工程与系统科学 2022-04-12 Xuyang Wang , Bo Tang , Ming Zhang

The use of low-resolution digital-to-analog converters (DACs) for transmit precoding provides crucial energy efficiency advantage for massive multiple-input multiple-output (MIMO) implementation. This paper formulates a quadrature amplitude…

信息论 · 计算机科学 2018-07-04 Foad Sohrabi , Ya-Feng Liu , Wei Yu

Distributed MIMO radar is known to achieve superior sensing performance by employing widely separated antennas. However, it is challenging to implement a low-complexity distributed MIMO radar due to the complex operations at both the…

信号处理 · 电气工程与系统科学 2023-02-17 Yikun Xiang , Feng Xi , Shengyao Chen

Designing unimodular waveforms with a desired beampattern, spectral occupancy and orthogonality level is of vital importance in the next generation Multiple-Input Multiple-Output (MIMO) radar systems. Motivated by this fact, in this paper,…

信号处理 · 电气工程与系统科学 2021-12-14 Ehsan Raei , Saeid Sedighi , Mohammad Alaee-Kerahroodi , M. R. Bhavani Shankar

In millimeter-wave (mmWave) dual-function radar-communication (DFRC) systems, hybrid beamforming (HBF) is recognized as a promising technique utilizing a limited number of radio frequency chains. In this work, in the presence of extended…

信号处理 · 电气工程与系统科学 2022-11-07 Ziyang Cheng , Linlong Wu , Bowen Wang , Bhavani Shankar M. R. , Björn Ottersten

Detection for one-bit massive MIMO systems presents several challenges especially for higher order constellations. Recent advances in both model-based analysis and deep learning frameworks have resulted in several robust one-bit detector…

信号处理 · 电气工程与系统科学 2023-05-30 Aditya Sant , Bhaskar D. Rao

Low-resolution analog-to-digital converters (ADCs) have emerged as a promising technology for reducing power consumption and complexity in massive multiple-input multiple-output (MIMO) systems while maintaining satisfactory spectral and…

信号处理 · 电气工程与系统科学 2025-05-06 Mengyuan Ma , Nhan Thanh Nguyen , Italo Atzeni , Markku Juntti

Most recently, there has been a flurry of research activities on studying how massive MIMO precoding should be designed when the digital-to-analog conversion at the transmitter side is operated by cheap one-bit digital-to-analog converters…

信息论 · 计算机科学 2018-09-25 Mingjie Shao , Qiang Li , Yatao Liu , Wing-Kin Ma

Dual function radar communications (DFRC) systems are attractive technologies for autonomous vehicles, which utilize electromagnetic waves to constantly sense the environment while simultaneously communicating with neighbouring devices. An…

信号处理 · 电气工程与系统科学 2021-12-15 Dingyou Ma , Nir Shlezinger , Tianyao Huang , Yimin Liu , Yonina C. Eldar

Massive multiple-input multiple-output (M-MIMO) architecture is the workhorse of modern communication systems. Currently, two fundamental bottlenecks, namely, power consumption and receiver saturation, limit the full potential achievement…

信息论 · 计算机科学 2022-10-20 Ziang Liu , Ayush Bhandari , Bruno Clerckx

There is a trend of applying machine learning algorithms to cognitive radio. One fundamental open problem is to determine how and where these algorithms are useful in a cognitive radio network. In radar and sensing signal processing, the…

网络与互联网体系结构 · 计算机科学 2011-06-14 Shujie Hou , Robert C. Qiu , Zhe Chen , Zhen Hu

With the leaping advances in autonomous vehicles and transportation infrastructure, dual function radar-communication (DFRC) systems have become attractive due to the size, cost and resource efficiency. A frequency modulated continuous…

信号处理 · 电气工程与系统科学 2024-03-29 Mengjiang Sun , Peng Chen , Zhenxin Cao , Fei Shen

Intelligent reflecting surface (IRS) technology has recently attracted a significant interest in non-light-of-sight radar remote sensing. Prior works have largely focused on designing single IRS beamformers for this problem. For the first…

信息论 · 计算机科学 2023-03-14 Zahra Esmaeilbeig , Arian Eamaz , Kumar Vijay Mishra , Mojtaba Soltanalian

In radar systems, unimodular (or constant-modulus) waveform design plays an important role in achieving better clutter/interference rejection, as well as a more accurate estimation of the target parameters. The design of such sequences has…

信号处理 · 电气工程与系统科学 2022-08-10 Shahin Khobahi , Arindam Bose , Mojtaba Soltanalian

The integrated design of communication and sensing may offer a potential solution to address spectrum congestion. In this work, we develop a beamforming method for a dual-function radar-communication system, where the transmit signal is…

信号处理 · 电气工程与系统科学 2025-08-07 Hossein Maleki , Carles Diaz-Vilor , Ali Pezeshki , Vahid Tarokh , Hamid Jafarkhani