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oe1(光电查) - 科学论文

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?? 中文（中国） ▾

  • A Simple Channel Independent Beamforming Scheme with Parallel Uniform Circular Array

    摘要： In this letter, we consider a uniform circular array (UCA) based line-of-sight (LOS) multiple-input-multiple-output (MIMO) system, where the transmit and receive UCAs are parallel but non-coaxial with each other. We propose a simple channel independent beamforming scheme with fast symbol-wise maximum likelihood (ML) detection.

    关键词： multiple-input-multiple-output (MIMO),channel independent beamforming,Uniform circular array (UCA),fast maximum likelihood (ML)

    更新于2025-09-23 15:22:29

  • An Orbital Angular Momentum-Based Array for In-Band Full-Duplex Communications

    摘要： A uniform circular array (UCA) with dual orbital angular momentum (OAM) modes is proposed for in-band full-duplex applications. The proposed scheme includes two concentric ring subarrays for transmitting and receiving, respectively, where all elements are operated under the same linear polarization. To suppress the self-interference resulting from the mutual coupling, an OAM mode-selection method related to the proposed configuration is discussed. Results indicate that good isolation performance between the transmitter and receiver can be achieved by using the proposed scheme. To validate the performance, a demonstrator with OAM modes of -1 and -2 at Ku-band is developed, fabricated, and measured. Measurements show a relative bandwidth of 21.3% from 13.5 to 16.7 GHz, referring to a 40-dB suppression level, is achieved and the desired radiations are found.

    关键词： self-interference suppression,uniform circular array,full-duplex,mutual coupling,Orbital angular momentum

    更新于2025-09-23 15:22:29

  • [IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Environmental and Economic Considerations for PV Module End-of-Life Management

    摘要： This paper suggests a real-valued sparse representation method using a unitary transformation that can convert complex-valued manifold matrices from uniform circular array into real ones. Because of this transformation, the computational complexity is modi?ed. Simulation results con?rmed the effectiveness of the proposed method with a circular array radar.

    关键词： array signal processing,Angle of arrival (AOA),uniform circular array (UCA)

    更新于2025-09-23 15:19:57

  • [IEEE 2019 Chinese Control And Decision Conference (CCDC) - Nanchang, China (2019.6.3-2019.6.5)] 2019 Chinese Control And Decision Conference (CCDC) - A Kind of Digital Controlled Electro-Optical Switch Power Source with Variable Voltage and Variable Frequency

    摘要： This paper suggests a real-valued sparse representation method using a unitary transformation that can convert complex-valued manifold matrices from uniform circular array into real ones. Because of this transformation, the computational complexity is modi?ed. Simulation results con?rmed the effectiveness of the proposed method with a circular array radar.

    关键词： array signal processing,Angle of arrival (AOA),uniform circular array (UCA)

    更新于2025-09-16 10:30:52

  • EFFICIENT LOCALIZATION ALGORITHM OF MIXED FAR-FIELD AND NEAR-FIELD SOURCES USING UNIFORM CIRCULAR ARRAY

    摘要： An e?cient algorithm based on high-order cumulant is addressed for the scenarios where both far-?eld and near-?eld narrow-band signals may exist synchronously. The ?rst matrix built by four-order cumulant is utilized to estimate the two dimensional direction-of-arrivals (DOAs) using the orthogonal projection matrix of the signal subspace and the virtual steering matrix. Then, the second matrix built by four-order cumulant is decomposed to get the noise subspace using the eigen decomposition. Meanwhile, a virtual steering matrix is used to distinguish far-?eld signals (FFSs) from near-?eld signals (NFSs). And one-dimensional MUSIC algorithm is used to estimate the range of the NFSs. Compared to the TSMUSIC, the proposed algorithm can provide high resolution for the DOAs. In addition, there is higher accuracy for the DOA of NFS in the proposed algorithm than that in TSMUSIC and in TSMD. Simulation results are carried out to certify the performance of the proposed algorithm.

    关键词： near-field signals,MUSIC algorithm,high-order cumulant,uniform circular array,far-field signals,DOA estimation

    更新于2025-09-04 15:30:14