Results 171 to 180 of about 369 (198)
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Efficient feedback quantization for WLAN
2017 11th European Conference on Antennas and Propagation (EUCAP), 2017We present an efficient feedback quantization technic for beamforming matrix compression. The proposed technic named time domain quantization TD-Q relies on the feed back of time domain parameters necessary for the reproduction of the beamforming matrix at the transmitter.
Moussa Diallo, Idy Diop, Ibra Dioum
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Stability analysis of quantized feedback systems including optimal dynamic quantizers
2008 47th IEEE Conference on Decision and Control, 2008This paper characterizes the stability of quantized feedback systems which contains optimal dynamic quantizers recently proposed by the authors. First, it is shown that the separation property of the quantizer-controller design, which is similar to the well-known separation property of the observer-controller design, holds in the quantized feedback ...
Shun-ichi Azuma, Toshiharu Sugie
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Precoder Quantization vs Channel Quantization in Interference Channel with Limited Feedback
2017 Twenty-third National Conference on Communications (NCC), 2017In this paper, we compare the precoder and channel feedback in interference channel (IC) when interference alignment (IA) is used. In literature, the channel direction has been quantized and fed back in IC. Here, we consider the precoder quantization and feedback (PQFB) in IC, and seek its benefits over channel feedback.
Navneet Garg 0001, Govind Sharma 0004
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Energy-efficient modulation selection and feedback quantization
2012 IEEE 17th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD), 2012In this paper, we consider the energy efficiency (EE) of a single-link system, requiring feedback for reliable transmission. A quantized value of the signal-to-noise ratio is sent back to select the scheme that achieves maximum EE. Besides the energy consumption at the transmitter, we account for the energy consumed at the receiver to feedback the ...
Zhijiat Chong +2 more
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State estimation in quantized feedback control system
2014 IEEE 13th International Workshop on Advanced Motion Control (AMC), 2014Recently, by development of communication techniques, control via communication is expected to take important part in networked control systems (NCSs) and so on. The main problem of the NCSs is that data are transmitted via a communication channel which has a constraint of capacity by converting a continuous signal into a discrete signal by using ...
Takuya Ohtsuka +2 more
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Feedback Quantization Strategies for Multiuser Diversity Systems
IEEE Transactions on Information Theory, 2007In a system utilizing multiuser diversity, regular feedback of channel-quality predictions to the base station is required for each user. Typically, the measure of channel quality must be quantized at each mobile station before it can be sent back.
Alan Pak Tao Lau, Frank R. Kschischang
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A new approach to quantized feedback control systems
Automatica, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huijun Gao, Tongwen Chen
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Nonlinear Stabilization by Hybrid Quantized Feedback
2000This paper is concerned with global asymptotic stabilization of continuous-time control systems by means of quantized feedback. For linear systems, a hybrid control strategy for dealing with this problem was recently proposed by Roger Brockett and the author.
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Multiuser communication with quantized feedback
2019This thesis considers communication over various types of Gaussian channels with quantized channel output feedback. Here, the received signals are quantized and then directly fed back to one or multiple transmitters. We study point-to-point and multiuser communication scenarios. In the case of multiple users we consider the multiple access channel, i.e.
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Quantized description of optical feedback
2014Diese Arbeit behandelt die theoretische Beschreibung optischer Rückkopplung auf Grundlage der Quantenmechanik und ihre Anwendung auf Modellsysteme verschiedener Komplexität. Die Arbeit besteht aus drei Hauptteilen die folgende Schwerpunkte besitzen: i) Die Grundlagen verschiedener theoretischer quantenmechanischer Beschreibungen von optischer ...
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