Results 181 to 190 of about 2,958,782 (230)

Multitarget Respiration Detection With Adaptive Digital Beamforming Technique Based on SIMO Radar

IEEE transactions on microwave theory and techniques, 2020
The Doppler radar has been widely used in respiration detection. However, most of the existing microwave respiration detection works are intended for either a single human subject in front of the radar or multiple subjects with known positions.
Junjun Xiong, Hong Hong, Hongqiang Zhang, Ning Wang, H. Chu, Xiaohua Zhu   +5 more
semanticscholar   +1 more source

Hybrid analog digital beamforming

2022
In recent years, two of the main trends in wireless communication have been higher carrier frequencies and larger antenna arrays. Each trend by itself allows for a significant gain in system performance, but they are difficult to combine. The former trend, higher carrier frequencies in the millimeter-wave (mm-wave) range, offers an unprecedented ...
openaire   +2 more sources

Assessment of Digital Beamforming Radar (DBF) and Spread Spectrum Digital Beamforming Radar (SSDBF)

2017 14th IEEE India Council International Conference (INDICON), 2017
Spread Spectrum Digital Beamforming (SSDBF), an innovative methodology which uses only one transceiver element overcomes the limitations of Conventional Digital Beamforming (CDBF) which uses multiple transceiver elements per antenna element. This is done by using the concept of Code Division Multiple Access (CDMA) multiplexing and de-multiplexing where
Nima Donka Tamang, Samarendra Nath Sur, Soumyasree Bera, Rabindranath Bera   +3 more
openaire   +1 more source

Digital beamforming demonstration radar

International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990
The development of a demonstration radar has been undertaken to demonstrate the capabilities and application of digital beamforming techniques and technologies for future monostatic surveillance radars. These techniques and technologies are also applicable to bistatic radars.
J.H. Hunter, T.W. Miller
openaire   +1 more source

Hybrid Analog-Digital Beamforming Design for SE and EE Maximization in Massive MIMO Networks

IEEE Transactions on Vehicular Technology, 2020
Hybrid analog-digital (HAD) beamforming architectures have been proposed to facilitate the practical implementation of massive multiple-input multiple-output (MIMO) systems by reducing the number of employed radio frequency chains.
Khaled Ardah, Gábor Fodor, Y. Silva, Walter Cruz, A. D. Almeida   +4 more
semanticscholar   +1 more source

A General Digital Predistortion Linearization Scheme for Hybrid Beamforming System

IEEE Transactions on Vehicular Technology, 2023
Hybrid beamforming multiple-input multiple-output (MIMO) system has attracted a lot of attention in recent years since it significantly reduces the hardware cost compared to the fully digital beamforming system.
Linshan Zhao, Shaojun Wan, Kai Kang, Weifeng Feng, Hua Qian   +4 more
semanticscholar   +1 more source

Design and Implementation of a Full-Digital Beamforming Array With Nonreciprocal Tx/Rx Beam Patterns

IEEE Antennas and Wireless Propagation Letters, 2020
This letter reports a strategy of full-digital arrays with nonreciprocal transmitting (Tx) and receiving (Rx) beam patterns, for the first time, for 5G/6G wireless communications.
Chong Guo, Jianfeng Zhai, Nianzu Zhang, Debin Hou, Guangqi Yang, Zhe Chen, Fan Wu, Yingrui Yu, Chang Shu, Fei Huang, Xiaowei Zhu, W. Hong, Z. Hao, Ling Tian, Z. Jiang, Jianyi Zhou, Jixin Chen, Haiming Wang, Yu Zhiqiang, Chao Yu   +19 more
semanticscholar   +1 more source

Digital Beamforming and Receiving Array Research Based on Rydberg Field Probes

IEEE Transactions on Antennas and Propagation
The electric field sensing technology based on the Rydberg atom has attracted widespread attention due to its powerful detection ability for the amplitude, phase, and polarization of the electric field.
Ruiqi Mao, Yi Lin, Yun-qi Fu, Yuemin Ma, Kai Yang   +4 more
semanticscholar   +1 more source

Digital beamforming in ultrasound

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1992
The effects on array gain and sidelobe level of a practical digital beamforming (DBF) processor under the wideband conditions typical of ultrasound is discussed. It is concluded that a relatively simple design that replaces each analog delay line with a tapped, digital shift register (DSR) and a digital phase shift operation adjusted for midband will ...
openaire   +2 more sources

Digital Beamforming Techniques for Future Communications Systems

International Symposium on Communication Systems, Networks and Digital Signal Processing, 2020
5G is the next mobile generation that will support the need for more data applications, higher speeds, more capacity, lower latency and increased performance. New cellular architectures and technologies are being investigated in order to meet the growing
Gordana Barb, M. Otesteanu, F. Alexa, Ana Ghiulai   +3 more
semanticscholar   +1 more source