Results 181 to 190 of about 6,597 (217)

DOA(Direction of Arrival) with array antennas based on MOM

2010 IEEE Antennas and Propagation Society International Symposium, 2010
It's an important issue that estimation of signal direction for radar or communication system. And it was researched for military and commercial. Generally, it's a method that estimate to direction of signal by use each signal of array sensors. It called to DOA(Direction Of Arrival). For basically, there are Beamforming, Capon, Linear-prediction method.
null Sang-kon Mun, null Won-june Kang, null Vea-o Lee, null Chang-yul Cheon, null Yong-seek Chung   +4 more
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Direction of arrival (DOA) determination based on monopulse concepts

2000 Asia-Pacific Microwave Conference. Proceedings (Cat. No.00TH8522), 2002
Monopulse is a classical radar technique of precise finding of a source or target. The concept can be used both in radar applications as well as in modern communication techniques. The information contained in antenna sidelobes normally disturbs the determination of DOA in the case of a classical monopulse system. The suitable combination of amplitude-
W. Kederer, J. Detlefsen
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On direction-of-arrival (DoA) feedback and precoding for D2D assisted massive MIMO

2018 IEEE Wireless Communications and Networking Conference (WCNC), 2018
Effective channel state information (CSI) feedback design is difficult for massive multiple-input multiple-output (MIMO) downlink transmissions in 5G frequency division duplexing (FDD) bands, where partial CSI could be directly exchanged between users through device-to-device (D2D) communications.
Hong-Yunn Chen, Cheng-Fu Chou, Leana Golubchik   +2 more
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Millidegree-Level Direction-of-Arrival (DoA) Estimation and Tracking for Terahertz Wireless Communications

2020 17th Annual IEEE International Conference on Sensing, Communication, and Networking (SECON), 2020
The Terahertz (0.1-10 THz) band is envisioned to meet the rapid growth of wireless data rates. Achieving high beamforming gain and reduced hardware complexity, the array-of-subarrays (AoSA) hybrid beamforming is a promising technology to be adopted for THz communications.
Yuhang Chen, Longfei Yan 0002, Chong Han 0001   +2 more
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Direction-of-arrival methods (DOA) and time difference of arrival (TDOA) position location technique

Proceedings of the Twenty-Second National Radio Science Conference, 2005. NRSC 2005., 2005
This paper provides a detailed overview of the various methods for estimation of direction-of-arrival (also called angle-of-arrival) of a radio signal using an antenna array. The array-based directional-of-arrival (DOA) estimation techniques considered here are broadly divided into two different types: conventional techniques, and subspace based ...
Mohamed Abd Elsalam Mofeed, Hohamed Abd Elsalam Mofeed   +1 more
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Direction-of-Arrival (DOA) Estimation based on Spacetime-Modulated Metasurface

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
We introduce the concept of DOA estimation based on spacetime-modulated 2D-patch-array metasurface. Such a system, compared to conventional DOA estimators, offers the key advantage of requiring only one receiving antenna, with the metasurface placed in front of it.
Xiaoyi Wang, Christophe Caloz
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Direction-of-arrival (DOA) estimation in the presence of array signal coupling

2011 8th International Conference on Information, Communications & Signal Processing, 2011
Direction-of-arrival (DOA) estimation is an important function in array signal processing. Many DOA estimation algorithms have been proposed catering for different situations and accuracies requirements. Nevertheless, most of these algorithms were designed based on the assumption of using ideal array sensors such as antennas with no interaction between
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Direction of arrival (DOA) estimation with extended optimum co-prime sensor array (EOCSA)

Multidimensional Systems and Signal Processing, 2021
In this study we propose a novel sparse antenna array and suitable beamforming algorithm in order to decrease the number of antennas in large-scale antenna systems (LSASs) and achieving the performance of a dense antenna array. To design a sparse array we use the familiar array geometry that is called co-prime sensor array (CSA), which has been ...
Goudarz Saadati Moghadam, Aliasghar Beheshti Shirazi   +1 more
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Direction of Arrival (DOA) Estimation

2019
The importance of DOA estimation in radar processing for automotive applications cannot be overstated. It forms the third component of the radar cube: range, velocity, and angle. In practice, DOA estimation is often complicated by the fact that there will be multiple and unknown number of source signals impinging on the receiver array at the same time,
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Parallel wavelet transform based wideband Direction-Of-Arrival (DOA) on multicore/GPU

IEEE International Conference on Electro-Information Technology , EIT 2013, 2013
In most of the signal processing applications, main interest is to obtain an accurate estimation of the Direction-Of-Arrival (DOA) of a received signal. Computation of Direction-Of-Arrival (DOA) based on Wavelet transform and other techniques are available in the literature. This work is an improved work of our previously parallel implementation of DOA.
Mohammad Wadood Majid, Golrokh Mirzaei, Mohsin M. Jamali   +2 more
openaire   +1 more source