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This paper studies secrecy rate optimization in a wireless network with a single-antenna source, a multi-antenna destination and a multi-antenna eavesdropper. This is an unfavorable scenario for secrecy performance as the system is…

信息论 · 计算机科学 2016-08-24 Gan Zheng , Ioannis Krikidis , Jiangyuan Li , Athina P. Petropulu , Bjorn Ottersten

In the framework of optical high data rate satellite-to-ground links, we investigate the performance of a coherent receiver which combines an adaptive optics system and a digital carrier synchronization technique. We propose a digital…

信号处理 · 电气工程与系统科学 2020-10-28 Laurie Paillier , Raphaël Le Bidan , Jean-Marc Conan , Géraldine Artaud , Nicolas Védrenne , Yves Jaouën

This paper presents a computationally efficient decoder for multiple antenna systems. The proposed algorithm can be used for any constellation (QAM or PSK) and any labeling method. The decoder is based on matrix-lifting Semi-Definite…

信息论 · 计算机科学 2007-09-12 Amin Mobasher , Amir K. Khandani

We propose a distributed quantum dense coding protocol that uses a control system to superpose two dense coding processes, allowing us to simultaneously and coherently encode and non-classically route the sender's single-qubit system to two…

量子物理 · 物理学 2025-03-21 Pratham Hullamballi , Aparajita Bhattacharyya , Ujjwal Sen

This paper introduces a deep learning approach to dynamic spectrum access, leveraging the synergy of multi-modal image and spectrum data for the identification of potential transmitters. We consider an edge device equipped with a camera…

网络与互联网体系结构 · 计算机科学 2023-12-22 Yalin E. Sagduyu , Tugba Erpek , Aylin Yener , Sennur Ulukus

Integrated sensing and communication (ISAC) is a promising paradigm for future wireless systems due to spectrum reuse, hardware sharing, and joint waveform design. In dynamic scenes, Doppler shifts degrade both sensing and communication,…

信号处理 · 电气工程与系统科学 2025-12-04 Yuan Liu , Wen-Xuan Long , M. R. Bhavani Shankar , Marco Moretti , Rui Chen , Björn Ottersten

Throughput and per-packet delay can present strong trade-offs that are important in the cases of delay sensitive applications.We investigate such trade-offs using a random linear network coding scheme for one or more receivers in single hop…

网络与互联网体系结构 · 计算机科学 2012-02-06 Weifei Zeng , Chris T. K. Ng , Muriel Medard

In ultra-wideband (UWB) communication systems with impulse radio (IR) modulation, the bandwidth is usually 1GHz or more. To process the received signal digitally, high sampling rate analog-digital-converters (ADC) are required. Due to the…

信息论 · 计算机科学 2016-11-17 Xin Li , Huarui Yin , Zhiyong Wang , Zhengdao Wang

Coherent technology inherent with more availabledegrees of freedom is deemed a competitive solution for nextgeneration ultra-high-speed short-reach optical interconnects.However, the fatal barriers to implementing the conventiona.coherent…

信号处理 · 电气工程与系统科学 2024-03-19 Wei Wang , Dongdong Zou , Zhenpeng Wu , Qi Sui , Xingwen Yi , Fan Li , Chao Lu , Zhaohui Li

We numerically study the performance of the displacement based quantum receiver for the discrimination of weak 3- and 4-phase-shift keyed (PSK) coherent state signals. We show that due to the nontrivial asymmetry of the receiver structure,…

量子物理 · 物理学 2015-06-16 M. Fujiwara , S. Izumi , M. Takeoka , M. Sasaki

The majority of modern communication systems adopts quadrature amplitude modulation (QAM) constellations as transmission schemes. Due to their square structure, however, QAM do not provide satisfying protection to phase noise effects as the…

信息论 · 计算机科学 2018-12-07 Paul Ferrand , Marco Maso , Valerio Bioglio

Generalized quadrature spatial modulation (GQSM) schemes are known to achieve high energy- and spectral- efficiencies by modulating information both in transmitted symbols and in coded combinatorial activations of subsets of multiple…

信号处理 · 电气工程与系统科学 2023-10-05 Hyeon Seok Rou , Giuseppe Thadeu Freitas de Abreu , David González G. , Osvaldo Gonsa

Autonomous vehicles and robots often struggle with reliable visual perception at night due to the low illumination and motion blur caused by the long exposure time of RGB cameras. Existing methods address this challenge by sequentially…

计算机视觉与模式识别 · 计算机科学 2024-09-23 Ling Wang , Chen Wu , Lin Wang

In this work, we introduce a new deep learning approach based on diffusion posterior sampling (DPS) to perform material decomposition from spectral CT measurements. This approach combines sophisticated prior knowledge from unsupervised…

图像与视频处理 · 电气工程与系统科学 2024-02-07 Xiao Jiang , Grace J. Gang , J. Webster Stayman

Driven by the growing demand for large-scale artificial intelligence applications, disaggregated compute nodes and high-radix switches in next-generation computing clusters are set to surpass the capacity of current optical interconnect…

Phase synchronization of access points (APs) in a distributed multiple-input multiple-output (D-MIMO) system is critical to leverage the performance benefits of D-MIMO. Existing over-the-air phase synchronization methods assume that APs can…

信息论 · 计算机科学 2026-03-23 Unnikrishnan Kunnath Ganesan , Sai Subramanyam Thoota , Erik G. Larsson

Physical challenges at the device and interconnect level limit both network and computing energy efficiency. While photonics is being considered to address interconnect bottlenecks, optical routing is still limited by electronic circuitry,…

In order to control the inter-cell interference for a multi-cell multi-user multiple-input multiple-output network, we consider the precoder design for coordinated multi-point with downlink coherent joint transmission. To avoid costly…

信号处理 · 电气工程与系统科学 2024-03-18 Yuhao Liu , Xinyu Bian , Yizhou Xu , Tianqi Hou , Wenjie Wang , Yuyi Mao , Jun Zhang

Dense wavelength division multiplexing (DWDM) is one of the most successful methods for enhancing data transmission rates in both classical and quantum communication networks. Although signal multiplexing and demultiplexing are equally…

Ambient Backscatter Communication (AmBC) is an emerging communication technology that can enable green Internet-of-Things deployments. The widespread acceptance of this paradigm is limited by low Signal-to-Interference-Plus-Noise Ratio…

信号处理 · 电气工程与系统科学 2020-08-25 Xiyu Wang , Hüseyin Yiğitler , Ruifeng Duan , Estifanos Yohannes Menta , Riku Jäntti