A new adaptive algorithm for noise subspace estimation and tracking that is based on Rayleigh's quotient is proposed. The algorithm has a number of interesting properties such as low computational complexity and g...
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A new adaptive algorithm for noise subspace estimation and tracking that is based on Rayleigh's quotient is proposed. The algorithm has a number of interesting properties such as low computational complexity and good numerical stability. It can have many applications, in particular, in digital signal processing and communications.
When firefighters search inside a building that is at risk of collapse due to abandonment or disasters such as fire,they use old architectural drawings or a simple monitoring method involving a video device attached t...
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When firefighters search inside a building that is at risk of collapse due to abandonment or disasters such as fire,they use old architectural drawings or a simple monitoring method involving a video device attached to a ***,using these methods,the disaster situation inside a building at risk of collapse is difficult to detect and ***,we investigate the generation of digital maps for a disaster site to accurately analyze internal *** this study,a robot combined with a low-cost camera and twodimensional light detection and ranging(2D-lidar)traverses across a floor to estimate the location of obstacles while drawing an internal map of the *** propose an algorithm that detects the floor and then determines the possibility of entry,tracks collapses,and detects obstacles by analyzing patterns on the *** robot’s location is estimated,and a digital map is created based on Hector simultaneous localization and mapping(SLAM).Subsequently,the positions of obstacles are estimated based on the range values detected by 2D-lidar,and the position of the obstacles are identified on the map using the map update method in semantic *** equipment are implemented using low-specification devices,and the experiments are conducted using a low-cost robot that affords near-real-time *** experiments are conducted in various actual internal environments of *** terms of obstacle detection performance,almost all obstacles are detected,and their positions identified on the map with a high accuracy of 89%.
De-energization is a concerning issue in household or industrial environments where sensitive loads are installed. Block-out services may occur if a microcontrol's fault event takes place after the SMPS output sus...
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ISBN:
(纸本)9781509035960
De-energization is a concerning issue in household or industrial environments where sensitive loads are installed. Block-out services may occur if a microcontrol's fault event takes place after the SMPS output sustain time. Although several mitigating methods have been implemented to minimize its effects, a fast ac mains voltage inlet monitoring procedure could detect such an event before the sustain time ends. Hence, a method for in-advance quick detection is needed. In this paper, that proposed method is briefly spread and some results proving its speed, reliability and accuracy are shown.
In this paper, we propose a cost-efficient beamforming optimization algorithm for multi-user wireless communication systems associated with the intelligent reflecting surface (IRS). From the baseline successive refine...
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In this paper, we propose a cost-efficient beamforming optimization algorithm for multi-user wireless communication systems associated with the intelligent reflecting surface (IRS). From the baseline successive refinement algorithm, which gives a sub-optimal solution for the power minimization problem under the signal-to-interference-plus-noise-ratio (SINR) constraint at each user, several optimization techniques are proposed to reduce the computation complexity while maintaining the algorithm-level performance. To reduce the number of required multiply-accumulate (MAC) operations, we first simplify the complicated matrix inversion by utilizing the channel hardening effect. We also present the two-phase refinement process for the group-level optimization of phase-shift elements, further relaxing the computation complexity as well as the processing latency. Applying the proposed optimization techniques, as a result, numerical results show that the fully-optimized algorithm can reduce the computational costs by up to 89.4% while showing less than 1 dB power loss, leading to the practical solution for the next-generation IRS-aided communication.
De-energization is a concerning issue in household or industrial environments where sensitive loads are installed. Block-out services may occur if a microcontrol's fault event takes place after the SMPS output sus...
详细信息
ISBN:
(纸本)9781509035977
De-energization is a concerning issue in household or industrial environments where sensitive loads are installed. Block-out services may occur if a microcontrol's fault event takes place after the SMPS output sustain time. Although several mitigating methods have been implemented to minimize its effects, a fast ac mains voltage inlet monitoring procedure could detect such an event before the sustain time ends. Hence, a method for in-advance quick detection is needed. In this paper, that proposed method is briefly spread and some results proving its speed, reliability and accuracy are shown.
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