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In this paper, adaptive training beam sequence design for efficient channel estimation in large millimeter-wave(mmWave) multiple-input multiple-output (MIMO) channels is considered. By exploiting the sparsity in large mmWave MIMO channels…

Information Theory · Computer Science 2014-10-15 Junyeong Seo , Youngchul Sung , Gilwon Lee , Donggun Kim

Subject-specific cardiovascular models rely on parameter estimation using measurements such as 4D Flow MRI data. However, acquiring high-resolution, high-fidelity functional flow data is costly and taxing for the patient. As a result, there…

Medical Physics · Physics 2025-12-09 Miriam Löcke , Ahmed Attia , Dariusz Ucínski , Cristóbal Bertoglio

Using millimeter-wave (mmWave) bands is expected to provide high data rates through large licensed and unlicensed spectrum. Due to large path loss and sparse scattering propagation properties, proper beam alignment is important in mmWave…

Signal Processing · Electrical Eng. & Systems 2022-06-28 Hyeongtaek Lee , Sucheol Kim , Junil Choi

In this paper, we investigate the energy-efficient hybrid precoding design for integrated multicast-unicast millimeter wave (mmWave) system, where the simultaneous wireless information and power transform is considered at receivers. We…

Information Theory · Computer Science 2020-02-12 Wanming Hao , Gangcan Sun , Fuhui Zhou , De Mi , Jia Shi , Pei Xiao , Victor C. M. Leung

Properly designed precoders can significantly improve the spectral efficiency of multiple-input multiple-output (MIMO) relay systems. In this paper, we investigate joint source and relay precoding design based on the mean-square-error (MSE)…

Information Theory · Computer Science 2015-06-03 Rui Wang , Meixia Tao

In this paper, we consider the downlink precoder design for two-user power-domain multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA) systems. The proposed precoding scheme is based on simultaneous triangularization…

Information Theory · Computer Science 2021-06-08 Aravindh Krishnamoorthy , Meng Huang , Robert Schober

Subspace-based signal processing techniques, such as the Estimation of Signal Parameters via Rotational Invariant Techniques (ESPRIT) algorithm, are popular methods for spectral estimation. These algorithms can achieve the so-called…

Information Theory · Computer Science 2024-10-29 Zhiyan Ding , Ethan N. Epperly , Lin Lin , Ruizhe Zhang

In multiple antenna systems employing time-division duplexing, spatial precoder design at the base station (BS) leverages channel state information acquired through uplink pilot transmission, under the assumption of channel reciprocity.…

Signal Processing · Electrical Eng. & Systems 2020-04-24 Donatella Darsena , Giacinto Gelli , Ivan Iudice , Francesco Verde

mmWave communication has come up as the unexplored spectrum for 5G services. With new standards for 5G NR positioning, more off-the-shelf platforms and algorithms are needed to perform indoor positioning. An object can be accurately…

Signal Processing · Electrical Eng. & Systems 2024-03-15 Neharika Valecha , Jesus Omar Lacruz , Michael Lentmaier , Joerg Widmer , Fredrik Tufvesson

This paper studies multi-satellite multi-stream (MSMS) beamspace transmission, where multiple satellites cooperate to form a distributed multiple-input multiple-output (MIMO) system and jointly deliver multiple data streams to multi-antenna…

Signal Processing · Electrical Eng. & Systems 2025-12-29 Yafei Wang , Yiming Zhu , Vu Nguyen Ha , Wenjin Wang , Rui Ding , Symeon Chatzinotas , Björn Ottersten

Millimeter wave (mmWave) communication is one viable solution to support Gbps sensor data sharing in vehicular networks. The use of large antenna arrays at mmWave and high mobility in vehicular communication make it challenging to design…

Signal Processing · Electrical Eng. & Systems 2020-05-13 Yuyang Wang , Nitin Jonathan Myers , Nuria González-Prelcic , Robert W. Heath

Objective: Inclusion of individualised electrical conductivities of head tissues is crucial for the accuracy of electrical source imaging techniques based on electro/magnetoencephalography and the efficacy of transcranial electrical…

This paper investigates the bit error rate (BER) minimum pre-coder design for an orthogonal time frequency space (OTFS)-based integrated sensing and communications (ISAC) system, which is considered as a promising technique for enabling…

Signal Processing · Electrical Eng. & Systems 2023-12-20 Jun Wu , Weijie Yuan , Zhiqiang Wei , Jinjin Yan , Derrick Wing Kwan Ng

Spectrally efficient multi-antenna wireless communication systems are a key challenge as service demands continue to increase. At the same time, powering up radio access networks is facing environmental and regulation limitations. In order…

Orthogonal time frequency space (OTFS) modulation has been proposed to meet the demand for reliable communication in high-mobility scenarios for future wireless networks. However, in multi-user OTFS systems, conventional embedded pilot…

Information Theory · Computer Science 2025-12-03 Ruizhe Wang , Hong Ren , Cunhua Pan , Ruisong Weng , Jiangzhou Wang

Practical multiple-input-multiple-output (MIMO) systems depend on a predefined set of precoders to provide spatial multiplexing gain. This limitation on the flexibility of the precoders affects the overall performance. Here, we propose a…

Signal Processing · Electrical Eng. & Systems 2020-03-06 Berker Peköz , Mohammed Hafez , Selçuk Köse , Hüseyin Arslan

This paper develops energy-efficient hybrid beamforming designs for mmWave multi-user systems where analog precoding is realized by switches and phase shifters such that radio frequency (RF) chain to transmit antenna connections can be…

Signal Processing · Electrical Eng. & Systems 2020-01-16 Vu Nguyen Ha , Duy H. N. Nguyen , Jean-Francois Frigon

This paper considers a reconfigurable intelligent surface (RIS)-aided millimeter wave (mmWave) downlink communication system where hybrid analog-digital beamforming is employed at the base station (BS). We formulate a power minimization…

Information Theory · Computer Science 2021-01-26 Bei Guo , Renwang Li , Meixia Tao

This paper presents an energy-efficient downlink precoding scheme with the objective of maximizing system energy efficiency in a multi-cell massive MIMO system. The proposed precoding design jointly considers the issues of power control,…

Networking and Internet Architecture · Computer Science 2018-12-27 Shuai Zhang , Lu Liu , Yu Cheng , Xianghui Cao , Sheng Zhou , Zhisheng Niu , Hangguan Shan

In this paper, we address the problem of transmit beamspace design for multiple-input multiple-output (MIMO) radar with colocated antennas in application to direction-of-arrival (DOA) estimation. A new method for designing the transmit…

Information Theory · Computer Science 2015-06-16 Arash Khabbazibasmenj , Aboulnasr Hassanien , Sergiy A. Vorobyov , Matthew W. Morency
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