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A 2×2 silicon integrated optical phased array based on edge couplers for beam steering applications is proposed and investigated. Results show that a steering range of over 30° can be realized in both lateral and vertical directions.
Semantic analysis often uses a pipeline of Natural Language Processing (NLP) tools such as part-of-speech (POS) tagging. Brill tagging is a classic rule-based algorithm for POS tagging within NLP. However, implementation of the tagger is inherently slow on conventional Von Neumann architectures. In this paper, we accelerate the second stage of Brill tagging on the Micron Automata Processor, a new...
In this paper, we have proposed a method to design a terahertz metasurface which can significantly reduce the backward radar cross section(RCS) within an ultra wide frequency band. Four basic elements have been chosen, with the phase difference between adjacent elements 90 degrees. The far field contributions from these four elements can be proved to be cancelled with each other, leading to significant...
In this paper, we propose and experimentally demonstrate reconfigurable card-to-card optical wireless interconnects architecture with 16-Carrierless-Amplitude/Phase modulation. Results show that 3×40 Gb/s interconnection is achieved with 2 mW transmission power.
A reconfigurable optical interconnect architecture based on hybrid free-space and multi-mode fiber (MMF) propagation is proposed and experimentally demonstrated. 3×10 Gb/s reconfigurable interconnect is achieved with ~12 cm free-space propagation and a 10 m multimode fiber length.
A free-space-based high-speed reconfigurable card-to-card optical interconnect architecture with multicasting capability is proposed and experimentally demonstrated. Results show that 10 Gb/s data can be multicast to selected channels with receiver sensitivity better than −10.50 dBm.
A new method based on fourth-order cumulant for the joint estimation of the range and DOA of spatial near-field sources is presented. The proposed method adopts the non-centro-symmetric array, and constructs three cumulant matrixes using received array data; the aperture loss is effectively avoided. The method estimates the DOA and range parameters by the tripartite relationships among subspace matrixes,...
The paper discuses an automatic detecting scheme that uses acoustics localization technique as detecting principle, which solves the problems such as bad real-time character, low location accuracy and the security that resulted from depending on detecting point of impact artificially in the past. Based on measurements which are limited to time differences of arrival (TDOA) of short-duration acoustic...
In the paper, the problem of broadband near-field source localization is investigated. A novel method for joint range and bearing estimation of broadband near-field sources is proposed using coherent signal subspace method (CSM) and fourth-order cumulant. The broadband of near-field source is divided into multiple narrowband frequency bins. Coherent focusing of the received data over multiple frequency...
A vast majority of the existing eigen decomposition based localization schemes invoke the plane-wave assumption when estimating the localization parameter of multiple sources. When the sources are located close to the array, these techniques may no longer perform satisfactorily. Most modulated communication signals exhibit cyclostationarity. In this paper a new algorithm for near-field sources localization...
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