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A target recognition framework relying on near-field integrated sensing and communication (ISAC) systems is proposed. By exploiting the distance-dependent spatial signatures provided by the near-field spherical wavefront, high-accuracy…

信号处理 · 电气工程与系统科学 2026-03-17 Zongyao Zhao , Zhaolin Wang , Lincong Han , Jing Jin , Kaibin Huang

Hybrid digital and analog beamforming is a highly effective technique for implementing beamforming methods in millimeter wave (mmWave) systems. It provides a viable solution to replace the complex fully digital beamforming techniques.…

信息论 · 计算机科学 2025-09-30 Rohollah Vahdani , S. Mohammad Razavizadeh

We propose a transform for signals defined on the sphere that reveals their localized directional content in the spatio-spectral domain when used in conjunction with an asymmetric window function. We call this transform the directional…

信息论 · 计算机科学 2013-04-23 Z. Khalid , R. A. Kennedy , S. Durrani , P. Sadeghi , Y. Wiaux , J. D. McEwen

Benefiting from the rapid development of metamaterials and metasurfaces, the holographic multiple-input and multiple-output surface (HMIMOS) has been regarded as a promising solution for future wireless networks recently. By densely packing…

信号处理 · 电气工程与系统科学 2025-11-10 Haochen Wu , Yuanbin Chen , Yang Ming , Zhaocheng Wang

A non-regenerative dual-hop wireless system based on a distributed space-time coding strategy is considered. It is assumed that each relay retransmits an appropriately scaled space-time coded version of its received signal. The main goal of…

信息论 · 计算机科学 2016-11-18 Jamshid Abouei , Hossein Bagheri , Amir K. Khandani

In this article, we investigate the robust beamforming design for a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided downlink rate-splitting multiple access (RSMA) communication system, where both…

信号处理 · 电气工程与系统科学 2025-08-08 Ziyue Wang , Xiaoyan Ma , Xingyu Peng , Zheao Li , Jinyuan Liu , Yongliang Guan , Chau Yuen

Spatial modulation (SM) is an innovative and promising digital modulation technology that strikes an appealing trade-off between spectral efficiency and energy efficiency with a simple design philosophy. SM enjoys plenty of benefits and…

A microwave photonic short-time Fourier transform (STFT) system based on stabilized period-one (P1) nonlinear laser dynamics and stimulated Brillouin scattering (SBS) is proposed. By using an optoelectronic feedback loop, the…

光学 · 物理学 2024-04-18 Sunan Zhang , Taixia Shi , Lizhong Jiang , Yang Chen

In this paper, we propose a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) empowered transmission scheme for symbiotic radio (SR) systems to make more flexibility for network deployment and enhance…

信息论 · 计算机科学 2023-04-21 Chao Zhou , Bin Lyu , Youhong Feng , Dinh Thai Hoang

For doubly-selective channels, delay-Doppler (DD) modulation, mostly known as orthogonal time frequency space (OTFS) modulation, enables simultaneous compensation of delay and Doppler shifts. However, OTFS modulated signal has high…

信息论 · 计算机科学 2024-03-26 Yuto Hama , Hideki Ochiai

A near-field wideband communication system is investigated in which a base station (BS) employs an extra-large scale antenna array (ELAA) to serve multiple users in its near-field region. To facilitate near-field multi-user beamforming and…

信息论 · 计算机科学 2024-09-24 Zhaolin Wang , Xidong Mu , Yuanwei Liu

Benefiting from tens of GHz of bandwidth, terahertz (THz) communications has become a promising technology for future 6G networks. However, the conventional hybrid beamforming architecture based on frequency-independent phase-shifters is…

信息论 · 计算机科学 2023-09-22 Yihang Jiang , Ziqin Zhou , Xiaoyang Li , Yi Gong

Initial access in millimeter-wave (mmW) wireless is critical toward successful realization of the fifth-generation (5G) wireless networks and beyond. Limited bandwidth in existing standards and use of phase-shifters in analog/hybrid…

This paper addresses the problem of single snapshot Direction-of-Arrival (DOA) estimation, which is of great importance in a wide-range of applications including automotive radar. A popular approach to achieving high angular resolution when…

信号处理 · 电气工程与系统科学 2024-03-12 Yinyan Bu , Robin Rajamäki , Anand Dabak , Rajan Narasimha , Anil Mani , Piya Pal

In this paper, we propose a new technique for the future fifth generation cellular network wireless backhauling. We show that hundreds of bits per second per Hertz (bits per second per Hz) of spectral efficiency can be attained at a high…

Speaker embedding is an important front-end module to explore discriminative speaker features for many speech applications where speaker information is needed. Current SOTA backbone networks for speaker embedding are designed to aggregate…

声音 · 计算机科学 2022-03-18 Ruiteng Zhang , Jianguo Wei , Xugang Lu , Wenhuan Lu , Di Jin , Junhai Xu , Lin Zhang , Yantao Ji , Jianwu Dang

Leveraging spatio-temporal correlations among wind farms can significantly enhance the accuracy of ultra-short-term wind power forecasting. However, the complex and dynamic nature of these correlations presents significant modeling…

机器学习 · 计算机科学 2024-12-17 Xiaochong Dong , Xuemin Zhang , Ming Yang , Shengwei Mei

Resource coordination and interference management is the key to achieving the benefits of femtocell networks. Over-the-air signaling is one of the most effective means for distributed dynamic resource coordination and interference…

信息论 · 计算机科学 2011-03-15 Chunliang Yang , Chengling Jiang

Grating lobes arise from the periodic nature of element spacing in the optical phased array. Essentially, the phased array performs the Spatial Fourier Transform on light; the steering capability of the main lobe is governed by phase shift…

应用物理 · 物理学 2024-02-20 Bowen Yu , Dachuan Wu , Yasha Yi

As wireless communication systems look intently to compose the transition from voice communication to interactive Internet data, achieving higher bit rates becomes both increasingly desirable and challenging. Space-time coding (STC) is a…

信息论 · 计算机科学 2010-04-13 C. V. Seshaiah , S. Nagarani