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A novel variable achromatic optical beam splitter with one input and $N$ output waveguide channels is introduced. The physical mechanism of this multiple beam splitter is adiabatic passage of light between neighboring optical waveguides in…

光学 · 物理学 2012-02-28 Andon A. Rangelov , Nikolay V. Vitanov

A novel monostatic multiple-input multiple-output (MIMO) dual-function radar communication (DFRC) system is proposed, that uses the available bandwidth efficiently for both sensing and communication. The proposed system, referred to as…

信号处理 · 电气工程与系统科学 2022-03-30 Zhaoyi Xu , Athina Petropulu

Adiabatic passage techniques, used to drive a system from one quantum state into another, find widespread application in physics and chemistry. We focus on techniques to spatially transport a quantum amplitude over a strongly coupled…

量子物理 · 物理学 2020-07-15 Koen Groenland , Carla Groenland , Reinier Kramer

This paper proposes an interleaved transceiver design method for a multiple-input multiple-output (MIMO) integrated sensing and communication (ISAC) system utilizing orthogonal frequency division multiplexing (OFDM) waveforms. We consider a…

信号处理 · 电气工程与系统科学 2025-08-15 Yating Chen , Cai Wen , Yan Huang , Jinye Peng , Wei Hong , Timothy N. Davidson

Rate splitting (RS) is a potentially powerful and flexible technique for multi-antenna downlink transmission. In this paper, we address several technical challenges towards its practical implementation for beyond 5G systems. To this end, we…

信息论 · 计算机科学 2020-02-19 Zheng Li , Chencheng Ye , Ying Cui , Sheng Yang , Shlomo Shamai

Near-field integrated sensing and communication (ISAC) leverages distance-dependent channel variations for joint distance and angle estimation. However, full-digital architectures have prohibitive hardware costs, making hybrid…

信息论 · 计算机科学 2025-12-05 Jiasi Zhou , Chintha Tellambura , Geoffrey Ye Li

One of the challenges often faced with wireless communication systems is its limited range and data-rate. Distributed Transmit Beamforming (DTB) techniques are being developed to address these two issues to provide reliable connectivity…

信号处理 · 电气工程与系统科学 2018-07-18 Ismail Shakeel , Ishtiaq Ahmad , Hajime Suzuki

Traditionally, the capacity region of a coherent fading multiple access channel (MAC) is analyzed in two popular contexts. In the first, a centralized system with full channel state information at the transmitters (CSIT) is assumed, and the…

信息论 · 计算机科学 2014-09-17 Sreejith Sreekumar , Bikash K. Dey , Sibi Raj B. Pillai

Two simultaneous three wave mixing processes are analyzed, where an input frequency is converted to an output frequency via an intermediate stage. By employing simultaneous phase-matching and an adiabatic modulation of the nonlinear…

光学 · 物理学 2012-05-29 Gil Porat , Ady Arie

Use of low resolution analog to digital converters (ADCs) is an effective way to reduce the high power consumption of millimeter wave (mmWave) receivers. In this paper, a receiver with low resolution ADCs based on adaptive thresholds is…

信息论 · 计算机科学 2020-02-12 Abbas Khalili , Shahram Shahsavari , Farhad Shirani , Elza Erkip , Yonina C. Eldar

We demonstrate an 8 by 14 Gbps compatible WDM link based on a single-section semiconductor mode-locked laser, silicon photonics resonant ring modulators and joint channel reamplification with a semiconductor optical amplifier operated in…

Dual-Functional Radar-Communication systems enhance the benefits of communications and radar sensing by jointly implementing these on the same hardware platform and using the common RF resources. An important and latest concern to be…

信息论 · 计算机科学 2022-07-01 Onur Dizdar , Aryan Kaushik , Bruno Clerckx , Christos Masouros

Link adaptation, in particular adaptive coded modulation (ACM), is a promising tool for bandwidth-efficient transmission in a fading environment. The main motivation behind employing ACM schemes is to improve the spectral efficiency of…

Photonic routing is a key building block of many optical applications challenging its development. We report a 2$\times$2 photonic coupler with splitting ratio switchable by a low-voltage electronic signal with 10~GHz bandwidth and tens of…

量子物理 · 物理学 2019-12-20 Vojtěch Švarc , Martina Nováková , Glib Mazin , Miroslav Ježek

Deep neural networks are widely deployed in many fields. Due to the in-situ computation (known as processing in memory) capacity of the Resistive Random Access Memory (ReRAM) crossbar, ReRAM-based accelerator shows potential in accelerating…

硬件体系结构 · 计算机科学 2024-03-11 Chenguang Zhang , Zhihang Yuan , Xingchen Li , Guangyu Sun

The number of cells in a $\pi$-mode standing wave (SW) accelerating structure for the Compact linear Collider (CLIC) project is limited by mode overlap with nearby modes. The distributed coupling scheme avoids mode overlap by treating each…

加速器物理 · 物理学 2023-01-09 Evan Ericson , Alexej Grudiev , Drew Bertwistle , Mark Boland

A broadband technique for robust adiabatic rotation and conversion of light polarization is proposed. It uses the analogy between the equation describing the polarization state of light propagating through an optically anisotropic medium…

量子物理 · 物理学 2010-10-15 U. Gaubatz , A. A. Rangelov , N. V. Vitanov

Integrated sensing and communications (ISAC) is regarded as a key technology in next-generation (6G) mobile communication systems. Affine frequency division multiplexing (AFDM) is a recently proposed waveform that achieves optimal diversity…

信息论 · 计算机科学 2024-02-27 Ali Bemani , Nassar Ksairi , Marios Kountouris

In future high-capacity wireless systems based on mmWave or massive multiple input multiple output (MIMO), the power consumption of receiver Analog to Digital Converters (ADC) is a concern. Although hybrid or analog systems with fewer ADCs…

信息论 · 计算机科学 2019-01-29 Waqas bin Abbas , Felipe Gomez-Cuba , Michele Zorzi

This paper considers the joint power control and resource allocation for a device-to-device (D2D) underlay cellular system with a multi-antenna BS employing ADCs with different resolutions. We propose a four-step algorithm that optimizes…

信息论 · 计算机科学 2019-05-10 Muralikrishnan Srinivasan , Athira Subhash , Sheetal Kalyani