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Learning based Dynamic Codebook Selection for Analog Beamforming
2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall), 2020In this paper, a dynamic codebook selection scheme is proposed for beam sweeping at millimeter wave receiver. The codebook selection problem is formulated as a Partially Observed Markov Decision Process (POMDP) and Q-learning method is used to learn a policy to dynamically select an appropriate codebook from a pre-defined codebook set in each beam ...
Qi Zhan, Hongbing Cheng, Kee-Bong Song
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Analog beamforming for Full-Duplex Millimeter Wave Communication
2019 16th International Symposium on Wireless Communication Systems (ISWCS), 2019Full-duplex (FD) communication has the potential for significant improvements in spectral efficiency, as long as the problem of self-interference (SI) can be overcome. For millimeter wave (mmWave) systems with large antenna arrays, beamforming based SI mitigation is attractive because of the large number of degrees of freedom available.
Roberto López-Valcarce +1 more
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An analog adaptive beamforming circuit for audio noise reduction
2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2012We have designed and built the first commercially available all-analog adaptive beamforming integrated circuit utilizing a dual microphone array. Beamforming performs spatial filtering by exploiting time-of-arrival differences between microphones. Our analog implementation has the advantage of using very little power which is important in portable ...
Jeff Dugger +3 more
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Transmit beamforming with analog channel state information feedback
IEEE Transactions on Wireless Communications, 2008In this paper, the performance of a closed-loop transmit beamforming system employing the ";unconventional"; technique of analog channel state information (CSI) feedback is studied. The use of analog or unquantized symbols for CSI feedback leads to a low feedback rate of only one symbol per transmit antenna per frame, and does not result in an ...
Chiu, Eddy, Ho, Paul, Kim, Jae Hyung
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Reference Signals Design for Hybrid Analog and Digital Beamforming
IEEE Communications Letters, 2014There are many issues regarding the implementation of digital beamforming (BF) structures in massive MIMO: calibration, complexity, and cost. In a practical massive MIMO deployment, hybrid digital and analog BF structures with active antennas can be an alternative choice.
Shuangfeng Han +3 more
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On-Off Analog Beamforming with Per-Antenna Power Constraint
2017 IEEE 85th Vehicular Technology Conference (VTC Spring), 2017In this paper we propose a new analog beamforming structure by switching on or off each of multiple transmit antennas according to channel state information. The proposed analogue beamforming can significantly reduce the high cost, high power and bulky analogue phase-shifters which are employed in analog massive MIMO systems.
Shengli Zhang 0001 +3 more
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Optimal Analog Precoder Design for Hybrid Beamforming is Possible
IEEE Transactions on Vehicular Technology, 2023Jiaen Lv +2 more
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Analog Beamforming for Wideband Secure Communications
2024 IEEE International Conference on Communications Workshops (ICC Workshops)Yuchen Zhang 0007 +4 more
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Large-Scale Antenna Systems With Hybrid Analog and Digital Beamforming for Millimeter Wave 5G
IEEE Communications Magazine, 2015Zhikun Xu, Corbett Rowell
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